DATASHEET ISL4489E, ISL4491E FN6074 ±15kV ESD Protected, 1/8 Unit Load, 5V, Low Power, High Speed and Slew Rate Rev.4.00 Limited, Full Duplex, RS-485/RS-422 Transceivers Sep 17, 2018 The ISL4489E and ISL4491E are ESD protected, “fractional” Features Unit Load (UL), BiCMOS, 5V powered, single transceivers • Pb-free (RoHS compliant) that meet both the RS-485 and RS-422 standards for balanced communication. Each driver output and receiver • RS-485 I/O pin ESD protection . . . . . . . . . . . ±15kV HBM input is protected against ±15kV ESD strikes without - Class 3 ESD level on all other pins . . . . . . . >7kV HBM latch-up. Unlike competitive versions, these devices are • 1/8 unit load allows up to 256 devices on the bus specified for 10% tolerance supplies (4.5V to 5.5V). • High data rates (ISL4491E) . . . . . . . . . . . . up to 15Mbps The Rx inputs and Tx outputs present a 1/8 unit load to the • Slew rate limited version for error free data transmission RS-485 bus, which allows a total of 256 transmitters and (ISL4489E) receivers on the network for large node count systems. • Very low quiescent current: These devices are configured for full duplex (separate Rx - 140µA (ISL4489E) input and Tx output pins) applications, so they are ideal for - 370µA (ISL4491E) RS-422 networks requiring high ESD tolerance on the bus pins. • -7V to +12V common-mode input voltage range The ISL4489E uses a slew rate limited driver that reduces • Tri-statable Rx and Tx outputs EMI and minimizes reflections from improperly terminated • Full duplex pinout transmission lines, or unterminated stubs in multidrop and multipoint applications. • Operates from a single +5V supply (10% tolerance) • Current limiting and thermal shutdown for driver overload Data rates up to 15Mbps are achievable using the protection ISL4491E, which features higher slew rates. Applications The receiver (Rx) inputs feature a “fail-safe if open” design, which ensures a logic high Rx output if Rx inputs are floating. • Factory automation The driver (Tx) outputs are short-circuit protected, even for • Security networks voltages exceeding the power supply voltage. Additionally, on-chip thermal shutdown circuitry disables the Tx outputs to • Building environmental control systems prevent damage if power dissipation becomes excessive. • Industrial/process control networks Related Literature • Level translators (for example, RS-232 to RS-422) • RS-232 “extension cords” For a full list of related documents, visit our website: • ISL4489E, ISL4491E product pages TABLE 1. SUMMARY OF FEATURES PART HALF/FULL NO. OF DEVICES DATA RATE SLEW-RATE RECEIVER/ QUIESCENT PIN NUMBER DUPLEX HIGH ESD? ALLOWED ON BUS (Mbps) LIMITED? DRIVER ENABLE? ICC (µA) COUNT ISL4489E Full Yes 256 0.25 Yes Yes 140 14 ISL4491E Full Yes 256 15 No Yes 370 14 FN6074 Rev.4.00 Page 1 of 14 Sep 17, 2018

ISL4489E, ISL4491E Ordering Information PART NUMBER TEMP. RANGE TAPE AND REEL PACKAGE PKG. (Notes2, 3) PART MARKING (°C) (UNITS) (Note1) (RoHS Compliant) DWG. # ISL4489EIBZ 4489EIBZ -40 to +85 - 14 Ld SOIC M14.15 ISL4489EIBZ-T 4489EIBZ -40 to +85 2.5k 14 Ld SOIC M14.15 ISL4491EIBZ 4491EIBZ -40 to +85 - 14 Ld SOIC M14.15 ISL4491EIBZ-T 4491EIBZ -40 to +85 2.5k 14 Ld SOIC M14.15 NOTES: 1. Refer to TB347 for details about reel specifications. 2. Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), see the ISL4489E and ISL4491E product information pages. For more information on MSL, see TB363. Pinout 14 LD SOIC TOP VIEW NC 1 14 VCC RO 2 13 NC R RE 3 12 A DE 4 11 B DI 5 D 10 Z GND 6 9 Y GND 7 8 NC Pin Descriptions PIN FUNCTION RO Receiver output.RO is high if A > B by at least 0.2V; RO is low if A < B by 0.2V or more; RO = High if A and B are unconnected (floating). RE Receiver output enable. RO is enabled when RE is low; RO is high impedance when RE is high. DE Driver output enable. The driver outputs Y and Z are enabled by bringing DE high. They are high impedance when DE is low. DI Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low. GND Ground connection. A ±15kV HBM ESD protected, noninverting receiver input. B ±15kV HBM ESD protected, inverting receiver input. Y ±15kV HBM ESD protected, noninverting driver output. Z ±15kV HBM ESD protected, inverting driver output. VCC System power supply input (4.5V to 5.5V). NC No connection. FN6074 Rev.4.00 Page 2 of 14 Sep 17, 2018

ISL4489E, ISL4491E Truth Tables TRANSMITTING RECEIVING INPUTS OUTPUTS INPUTS OUTPUT RE DE DI Z Y RE DE A-B RO X 1 1 0 1 0 X ≥ +0.2V 1 X 1 0 1 0 0 X ≤ -0.2V 0 X 0 X High-Z High-Z 0 X Inputs Open 1 1 X X High-Z Typical Operating Circuit ISL4489E, ISL4491E 5V 5V 13,14 100nF 100nF 13,14 RPU VCC RB RB VCC RPU A 12 9 Y 2 RO DI 5 RT 3 RE B 11 10 Z DE 4 4 DE Z 10 11 B RE 3 5 DI RO 2 RT Y 9 12 A GND GND 6,7 RB RB 6,7 To calculate the resistor values, refer to TB509 FN6074 Rev.4.00 Page 3 of 14 Sep 17, 2018

ISL4489E, ISL4491E Absolute Maximum Ratings Thermal Information VCC to Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V Thermal Resistance (Typical, Note4) JA (°C/W) Input Voltages 14 Ld SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . 128 DI, DE, RE . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to (VCC +0.5V) Maximum Junction Temperature (Plastic Package) . . . . . . +150°C Input/Output Voltages Maximum Storage Temperature Range. . . . . . . . . .-65°C to +150°C A, B, Y, Z . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -8V to +12.5V Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . +300°C RO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to (VCC +0.5V) (Lead Tips Only) Short-Circuit Duration Y, Z. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous Operating Conditions ESD Rating . . . . . . . . . . . . See “ESD PERFORMANCE” on page5 Temperature Range. . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C CAUTION: Stresses above those listed in “Absolute Maximum Ratings” can permanently damage the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. NOTE: 4. JA is measured with the component mounted on a low-effective thermal conductivity test board in free air. See TB379 for details. Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at VCC = 5V, TA = +25°C, Note5 TEMP PARAMETER SYMBOL TEST CONDITIONS (°C) MIN TYP MAX UNIT DC CHARACTERISTICS Driver Differential VOUT (no load) VOD1 Full - - VCC V Driver Differential VOUT (with load) VOD2 R = 50Ω (RS-422) (Figure1) Full 2 3 - V R = 27Ω (RS-485) (Figure1) Full 1.5 2.3 5 V Change in Magnitude of Driver VOD R = 27Ω or 50Ω (Figure1) Full - 0.01 0.2 V Differential VOUT for Complementary Output States Driver Common-Mode VOUT VOC R = 27Ω or 50Ω (Figure1) Full - - 3 V Change in Magnitude of Driver VOC R = 27Ω or 50Ω (Figure1) Full - 0.01 0.2 V Common-Mode VOUT for Complementary Output States Logic Input High Voltage VIH DE, DI, RE Full 2 - - V Logic Input Low Voltage VIL DE, DI, RE Full 0.8 - - V Logic Input Current IIN1 DI Full -2 - 2 µA DE, RE Full -40 - 40 µA Input Current (A, B) (Note8) IIN2 DE = 0V, VCC = 0V or VIN = 12V Full - - 130 µA 4.5 to 5.5V VIN = -7V Full -100 - - µA Driver Tri-State (High Impedance) IOZD -7V ≤ VO ≤ 12V Full -100 - 100 µA Output Current (Y, Z) Receiver Differential Threshold VTH -7V ≤ VCM ≤ 12V Full -0.2 - 0.2 V Voltage Receiver Input Hysteresis VTH VCM = 0V +25 - 70 - mV Receiver Output High Voltage VOH IO = -4mA, VID = 200mV Full 3.5 - - V Receiver Output Low Voltage VOL IO = -4mA, VID = 200mV Full - - 0.4 V Tri-State (high impedance) IOZR 0.4V ≤ VO ≤ 2.4V Full - - ±1 µA Receiver Output Current Receiver Input Resistance RIN -7V ≤ VCM ≤ 12V Full 92 120 - kΩ No-Load Supply Current (Note6) ICC ISL4489E, DE, DI, RE = 0V or VCC Full - 140 190 µA ISL4491E, DE, DI, RE = 0V or VCC Full - 370 460 µA Driver Short-Circuit Current, IOSD1 DE = VCC, -7V ≤ VY or VZ ≤ 12V (Note7) Full 35 - 250 mA VO = High or Low Receiver Short-Circuit Current IOSR 0V ≤ VO ≤ VCC Full 7 - 85 mA FN6074 Rev.4.00 Page 4 of 14 Sep 17, 2018

ISL4489E, ISL4491E Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are at VCC = 5V, TA = +25°C, Note5 (Continued) TEMP PARAMETER SYMBOL TEST CONDITIONS (°C) MIN TYP MAX UNIT SWITCHING CHARACTERISTICS (ISL4489E) Driver Input to Output Delay tPLH, tPHL RDIFF = 54Ω, CL = 100pF (Figure2) Full 250 400 2000 ns Driver Output Skew tSKEW RDIFF = 54Ω, CL = 100pF (Figure2) Full - 160 800 ns Driver Differential Rise or Fall Time tR, tF RDIFF = 54Ω, CL = 100pF (Figure2) Full 250 600 2000 ns Driver Enable to Output High tZH CL = 100pF, SW = GND (Figure3) Full 250 1000 2000 ns Driver Enable to Output Low tZL CL = 100pF, SW = VCC (Figure3) Full 250 860 2000 ns Driver Disable from Output High tHZ CL = 15pF, SW = GND (Figure3) Full 300 660 3000 ns Driver Disable from Output Low tLZ CL = 15pF, SW = VCC (Figure3) Full 300 640 3000 ns Receiver Input to Output Delay tPLH, tPHL Figure4 Full 250 500 2000 ns Receiver Skew | tPLH - tPHL | tSKD Figure4 +25 - 60 - ns Receiver Enable to Output High tZH CL = 15pF, SW = GND (Figure5) Full - 10 50 ns Receiver Enable to Output Low tZL CL = 15pF, SW = VCC (Figure5) Full - 10 50 ns Receiver Disable from Output High tHZ CL = 15pF, SW = GND (Figure5) Full - 10 50 ns Receiver Disable from Output Low tLZ CL = 15pF, SW = VCC (Figure5) Full - 10 50 ns Maximum Data Rate fMAX Full 250 - - kbps SWITCHING CHARACTERISTICS (ISL4491E) Driver Input to Output Delay tPLH, tPHL RDIFF = 54Ω, CL = 100pF (Figure2) Full 13 24 40 ns Driver Output Skew tSKEW RDIFF = 54Ω, CL = 100pF (Figure2) Full - 3 10 ns Driver Differential Rise or Fall Time tR, tF RDIFF = 54Ω, CL = 100pF (Figure2) Full 5 12 20 ns Driver Enable to Output High tZH CL = 100pF, SW = GND (Figure3) Full - 14 70 ns Driver Enable to Output Low tZL CL = 100pF, SW = VCC (Figure3) Full - 14 70 ns Driver Disable from Output High tHZ CL = 15pF, SW = GND (Figure3) Full - 44 70 ns Driver Disable from Output Low tLZ CL = 15pF, SW = VCC (Figure3) Full - 21 70 ns Receiver Input to Output Delay tPLH, tPHL (Figure4) Full 30 90 150 ns Receiver Skew | tPLH - tPHL | tSKD (Figure4) +25 - 5 - ns Receiver Enable to Output High tZH CL = 15pF, SW = GND (Figure5) Full - 9 50 ns Receiver Enable to Output Low tZL CL = 15pF, SW = VCC (Figure5) Full - 9 50 ns Receiver Disable from Output High tHZ CL = 15pF, SW = GND (Figure5) Full - 9 50 ns Receiver Disable from Output Low tLZ CL = 15pF, SW = VCC (Figure5) Full - 9 50 ns Maximum Data Rate fMAX Full 15 - - Mbps ESD PERFORMANCE RS-485 Pins (A, B, Y, Z) Human Body Model +25 - ±15 - kV All Other Pins +25 - >±7 - kV NOTES: 5. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise specified. 6. Supply current specification is valid for loaded drivers when DE = 0V. 7. Applies to peak current. See “Typical Performance Curves” on page9 for more information. 8. Devices meeting these limits are denoted as “1/8 unit load (1/8 UL)” transceivers. The RS-485 standard allows up to 32 UL on the bus, so there can be 256 1/8 UL devices on a bus. FN6074 Rev.4.00 Page 5 of 14 Sep 17, 2018

ISL4489E, ISL4491E Test Circuits and Waveforms R DE VCC Z DI D VOD Y R VOC FIGURE 1. DRIVER VOD AND VOC 3V DI 1.5V 1.5V 0V tPLH tPHL CL = 100pF VOH VCC DE OUT (Y) 50% 50% DI Z VOL D RDIFF tPHL tPLH Y CL = 100pF VOH SIGNAL OUT (Z) 50% 50% GENERATOR VOL 90% 90% +VOD DIFF OUT (Y - Z) 10% 10% -VOD tR tF SKEW = |tPLH (Y or Z) - tPHL (Z or Y)| FIGURE 2A. TEST CIRCUIT FIGURE 2B. MEASUREMENT POINTS FIGURE 2. DRIVER PROPAGATION DELAY AND DIFFERENTIAL TRANSITION TIMES FN6074 Rev.4.00 Page 6 of 14 Sep 17, 2018

ISL4489E, ISL4491E Test Circuits and Waveforms (Continued) DE 3V DI Z 500Ω VCC DE 1.5V 1.5V D SIGNAL Y SW GND 0V GENERATOR CL tZH tHZ OUTPUT HIGH VOH - 0.5V VOH OUT (Y, Z) 2.3V 0V PARAMETER OUTPUT RE DI SW CL (pF) tHZ Y/Z X 1/0 GND 15 tZL tLZ tLZ Y/Z X 0/1 VCC 15 VCC OUT (Y, Z) 2.3V tZH Y/Z X 1/0 GND 100 VOL + 0.5VVOL OUTPUT LOW tZL Y/Z X 0/1 VCC 100 FIGURE 3A. TEST CIRCUIT FIGURE 3B. MEASUREMENT POINTS FIGURE 3. DRIVER ENABLE AND DISABLE TIMES RE 3V B 15pF A 1.5V 1.5V +1.5V RO A R 0V tPLH tPHL SIGNAL VCC GENERATOR RO 50% 50% 0V FIGURE 4A. TEST CIRCUIT FIGURE 4B. MEASUREMENT POINTS FIGURE 4. RECEIVER PROPAGATION DELAY RE 3V B RO 1kΩ VCC RE 1.5V 1.5V R 0V SGIEGNNEARLATOR A 15pF SW GND tZH tHZ OUTPUT HIGH VOH - 0.5VVOH RO 1.5V 0V PARAMETER DE A SW tHZ X +1.5V GND tZL tLZ VCC tLZ X -1.5V VCC RO 1.5V tZH X +1.5V GND VOL + 0.5VVOL OUTPUT LOW tZL X -1.5V VCC FIGURE 5A. TEST CIRCUIT FIGURE 5B. MEASUREMENT POINTS FIGURE 5. RECEIVER ENABLE AND DISABLE TIMES FN6074 Rev.4.00 Page 7 of 14 Sep 17, 2018

ISL4489E, ISL4491E Application Information rate limited versions are a maximum of 250kbps. The ISL4491E driver outputs are not limited, so faster output RS-485 and RS-422 are differential (balanced) data transition times allow data rates of at least 15Mbps. transmission standards for use in long haul or noisy environments. RS-422 is a subset of RS-485, so RS-485 Data Rate, Cables, and Terminations transceivers are also RS-422 compliant. RS-422 is a Twisted pair cable is the cable of choice for RS-485/422 point-to-multipoint (multidrop) standard that allows only one networks. Twisted pair cables tend to pick up noise and driver and up to 10 receivers on each bus, assuming one other electromagnetically induced voltages as unit load devices. RS-485 is a true multipoint standard, common-mode signals, which are effectively rejected by the which allows up to 32 one unit load devices (any differential receivers in these ICs. combination of drivers and receivers) on each bus. To allow for multipoint operation, the RS-485 specification requires RS-485/422 are intended for network lengths up to 4000ft, that drivers must handle bus contention without sustaining but the maximum system data rate decreases as the any damage. transmission length increases. Devices operating at 15Mbps are limited to lengths of a few hundred feet, while the An important advantage of RS-485 is the extended 250kbps versions can operate at full data rates with lengths Common-Mode Range (CMR), which specifies that the in excess of 1000ft. driver outputs and receiver inputs withstand signals that range from +12V to -7V. RS-422 and RS-485 are intended Proper termination is imperative to minimize reflections for runs as long as 4000ft, so the wide CMR is necessary to when using the 15Mbps devices. Short networks using the handle ground potential differences and voltages induced in 250kbps versions do not need to be terminated, but the cable by external fields. terminations are recommended unless power dissipation is an overriding concern. In point-to-point or point-to-multipoint Receiver Features (single driver on bus) networks, terminate the main cable in These devices use a differential input receiver for maximum its characteristic impedance (typically 120Ω) at the end noise immunity and common-mode rejection. Input farthest from the driver. In multi-receiver applications, keep sensitivity is ±200mV as required by the RS-422 and RS-485 stubs connecting receivers to the main cable as short as specifications. possible. In multipoint (multi-driver) systems, terminate the main cable in its characteristic impedance at both ends. The receiver input resistance of 120kΩ surpasses the Keep stubs connecting a transceiver to the main cable as RS-422 specification of 4kΩ, and is more than eight times short as possible. the RS-485 “UL” requirement of 12kΩ. Thus, these products are known as “one-eighth UL” transceivers. There can be up Built-In Driver Overload Protection to 256 of these devices on a network while still complying As stated previously, the RS-485 specification requires that with the RS-485 loading specification. drivers survive worst case bus contentions undamaged. The Receiver inputs function with common-mode voltages as ISL44xxE devices meet this requirement through driver great as ±7V outside the power supplies (such as +12V and output short-circuit current limits and on-chip thermal -7V), making them ideal for long networks in which induced shutdown circuitry. voltages are a realistic concern. The driver output stages incorporate short-circuit current All the receivers include a “fail-safe if open” function that limiting circuitry which ensures that the output current never ensures a high level receiver output if the receiver inputs are exceeds the RS-485 specification, even at the unconnected (floating). common-mode voltage range extremes. Additionally, these devices use a foldback circuit that reduces the short-circuit Receivers easily meet the data rate supported by the current, and thus the power dissipation, when the corresponding driver, and the receiver outputs are contending voltage exceeds either supply. tri-statable using the active low RE input. In the event of a major short-circuit condition, the ISL44xxE Driver Features devices’ thermal shutdown feature disables the drivers when The RS-485/422 driver is a differential output device that the die temperature becomes excessive. This eliminates the delivers at least 1.5V across a 54Ω load (RS-485) and at power dissipation, allowing the die to cool. The drivers least 2V across a 100Ω load (RS-422). The drivers feature automatically reenable after the die temperature drops about low propagation delay skew to maximize bit width and to 15°C. If the contention persists, the thermal minimize EMI. The driver outputs are tri-statable using the shutdown/reenable cycle repeats until the fault is cleared. active high DE input. Receivers stay operational during thermal shutdown. The ISL4489E driver outputs are slew rate limited to further reduce EMI and to minimize reflections in unterminated or improperly terminated networks. Data rates on these slew FN6074 Rev.4.00 Page 8 of 14 Sep 17, 2018

ISL4489E, ISL4491E ESD Protection cause an ESD event that might destroy unprotected ICs. The ESD structures protect the device whether or not it is All pins on these devices include Class 3 Human Body powered up, protect without allowing any latchup Model (HBM) ESD protection structures, but the RS-485 mechanism to activate, and without degrading the RS-485 pins (driver outputs and receiver inputs) incorporate common-mode range of -7V to +12V. This built-in ESD advanced structures allowing them to survive ESD events protection eliminates the need for board level protection in excess of ±15kV HBM. The RS-485 pins are particularly structures (for example, transient suppression diodes), and vulnerable to ESD damage because they typically connect the associated undesirable capacitive load they present. to an exposed port on the exterior of the finished product. Simply touching the port pins or connecting a cable can Typical Performance Curves VCC = 5V, TA = 25°C; Unless Otherwise Specified 90 3.6 80 3.4 V) mA) 70 GE ( 3.2 RDIFF = 100Ω NT ( 60 LTA E O 3 R V CUR 50 PUT 2.8 UT 40 UT UTP 30 AL O 2.6 ER O 20 ENTI 2.4 RDIFF = 54Ω V R RI E D 10 F 2.2 F DI 0 2 0 1 2 3 4 5 -40 -25 0 25 50 75 85 DIFFERENTIAL OUTPUT VOLTAGE (V) TEMPERATURE (°C) FIGURE 6. DRIVER OUTPUT CURRENT vs DIFFERENTIAL FIGURE 7. DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs OUTPUT VOLTAGE TEMPERATURE 160 400 140 ISL4491E 120 350 ISL4491E, DE = X, RE = X Y OR Z = LOW 100 A) 80 ISL4489E 300 m T ( 60 N 40 250 E R 20 A) R µ CU 0 (C200 UT -20 IC P Y OR Z = HIGH T -40 150 ISL4489E, DE = X, RE = X U O -60 ISL4491E -80 ISL4489E 100 -100 -120 -7 -6 -4 -2 0 2 4 6 8 10 12 50 -40 -25 0 25 50 75 85 OUTPUT VOLTAGE (V) TEMPERATURE (°C) FIGURE 8. DRIVER OUTPUT CURRENT vs SHORT-CIRCUIT FIGURE 9. SUPPLY CURRENT vs TEMPERATURE VOLTAGE FN6074 Rev.4.00 Page 9 of 14 Sep 17, 2018

ISL4489E, ISL4491E Typical Performance Curves VCC = 5V, TA = 25°C; Unless Otherwise Specified (Continued) 750 250 700 s) tPLHY 200 AY (n 650 tPLHZ |tPLHY - tPHLZ| EL 150 D GATION 600 tPHLY W (ns) 100 |tPHLY - tPLHZ| PA 550 KE RO tPHLZ S P 50 500 |CROSS PT. OF Y & Z - CROSS PT. OF Y & Z| 450 0 -40 -25 0 25 50 75 85 -40 -25 0 25 50 75 85 TEMPERATURE (°C) TEMPERATURE (°C) FIGURE 10. DRIVER PROPAGATION DELAY vs FIGURE 11. DRIVER SKEW vs TEMPERATURE (ISL4489E) TEMPERATURE (ISL4489E) 30 5 28 4 ns) 26 |tPHLY - tPLHZ| Y ( A DEL 24 ns) 3 AGATION 22 tPtPLLHHYZ tPHLZ SKEW ( 2 |tPLHY - tPHLZ| OP 20 R P 1 18 |CROSSING PT. OF Y & Z - CROSSING PT. OF Y & Z| tPHLY 16 0 -40 -25 0 25 50 75 85 -40 -25 0 25 50 75 85 TEMPERATURE (°C) TEMPERATURE (°C) FIGURE 12. DRIVER PROPAGATION DELAY vs FIGURE 13. DRIVER SKEW vs TEMPERATURE TEMPERATURE (ISL4491E) (ISL4491E) R OUTPUT (V) 5 DI RDIFF = 54Ω, CL = 100pF 05 VER INPUT (V) R OUTPUT (V) 5 DI RDIFF = 54Ω, CL = 100pF 05 VER INPUT (V) EIVE 0 RO DRI EIVE 0 RO DRI C C E E R R V) 4 V) 4 T ( Z T ( Y U 3 U 3 P P T T OU 2 Y OU 2 Z R R VE 1 VE 1 RI RI D 0 D 0 TIME (400ns/DIV) TIME (400ns/DIV) FIGURE 14. DRIVER AND RECEIVER WAVEFORMS, FIGURE 15. DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (ISL4489E) HIGH TO LOW (ISL4489E) FN6074 Rev.4.00 Page 10 of 14 Sep 17, 2018

ISL4489E, ISL4491E Typical Performance Curves VCC = 5V, TA = 25°C; Unless Otherwise Specified (Continued) EIVER OUTPUT (V) 05 DI RO RDIFF = 54Ω, CL = 100pF 05 DRIVER INPUT (V) EIVER OUTPUT (V) 05 RDOI RDIFF = 54Ω, CL = 100pF 05 DRIVER INPUT (V) C C E E R R V) 4 V) 4 T ( Z T ( Y U 3 U 3 P P T T OU 2 Y OU 2 Z R R VE 1 VE 1 RI RI D 0 D 0 TIME (20ns/DIV) TIME (20ns/DIV) FIGURE 16. DRIVER AND RECEIVER WAVEFORMS, FIGURE 17. DRIVER AND RECEIVER WAVEFORMS, LOW TO HIGH (ISL4491E) HIGH TO LOW (ISL4491E) Die Characteristics SUBSTRATE POTENTIAL (POWERED UP): GND TRANSISTOR COUNT: 518 PROCESS: Si Gate BiCMOS FN6074 Rev.4.00 Page 11 of 14 Sep 17, 2018

ISL4489E, ISL4491E Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please visit our website to make sure you have the latest revision. DATE REVISION CHANGE Sep 14, 2018 FN6074.4 Added Related Literature section. Updated first features bullet. Updated Ordering Information table by removing retired parts, adding Notes 1 and 3, added tape and reel parts and column. Updated the Typical Operating Circuit diagram on page3. Added Revision History section. Updated POD M14.15 to the latest revision. Changes are as follows: - Add land pattern and moved dimensions from table onto drawing FN6074 Rev.4.00 Page 12 of 14 Sep 17, 2018

ISL4489E, ISL4491E Package Outline Drawing For the most recent package outline drawing, see M14.15. M14.15 14 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE Rev 1, 10/09 4 0.10CA-B2X 8.65 A 3 6 DETAIL"A" 0.22±0.03 14 8 D 6.0 3.9 4 0.10CD2X PIN NO.1 7 0.20C2X ID MARK (0.35) x 45° 4° ± 4° 5 0.31-0.51 B 3 6 0.25MCA-B D TOP VIEW 0.10C 1.75 MAX H 1.25 MIN 0.25 GAUGE PLANE C 1.27 0.10-0.25 SEATING PLANE 0.10C SIDE VIEW DETAIL "A" (1.27) (0.6) NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to AMSEY14.5m-1994. 3. Datums A and B to be determined at Datum H. (5.40) 4. Dimension does not include interlead flash or protrusions. Interlead flash or protrusions shall not exceed 0.25mm per side. 5. The pin #1 indentifier may be either a mold or mark feature. 6. Does not include dambar protrusion. Allowable dambar protrusion (1.50) shall be 0.10mm total in excess of lead width at maximum condition. 7. Reference to JEDEC MS-012-AB. TYPICAL RECOMMENDED LAND PATTERN FN6074 Rev.4.00 Page 13 of 14 Sep 17, 2018

Notice 1. Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of semiconductor products and application examples. You are fully responsible for the incorporation or any other use of the circuits, software, and information in the design of your product or system. Renesas Electronics disclaims any and all liability for any losses and damages incurred by you or third parties arising from the use of these circuits, software, or information. 2. Renesas Electronics hereby expressly disclaims any warranties against and liability for infringement or any other claims involving patents, copyrights, or other intellectual property rights of third parties, by or arising from the use of Renesas Electronics products or technical information described in this document, including but not limited to, the product data, drawings, charts, programs, algorithms, and application examples. 3. No license, express, implied or otherwise, is granted hereby under any patents, copyrights or other intellectual property rights of Renesas Electronics or others. 4. You shall not alter, modify, copy, or reverse engineer any Renesas Electronics product, whether in whole or in part. Renesas Electronics disclaims any and all liability for any losses or damages incurred by you or third parties arising from such alteration, modification, copying or reverse engineering. 5. Renesas Electronics products are classified according to the following two quality grades: “Standard” and “High Quality”. The intended applications for each Renesas Electronics product depends on the product’s quality grade, as indicated below. "Standard": Computers; office equipment; communications equipment; test and measurement equipment; audio and visual equipment; home electronic appliances; machine tools; personal electronic equipment; industrial robots; etc. "High Quality": Transportation equipment (automobiles, trains, ships, etc.); traffic control (traffic lights); large-scale communication equipment; key financial terminal systems; safety control equipment; etc. Unless expressly designated as a high reliability product or a product for harsh environments in a Renesas Electronics data sheet or other Renesas Electronics document, Renesas Electronics products are not intended or authorized for use in products or systems that may pose a direct threat to human life or bodily injury (artificial life support devices or systems; surgical implantations; etc.), or may cause serious property damage (space system; undersea repeaters; nuclear power control systems; aircraft control systems; key plant systems; military equipment; etc.). Renesas Electronics disclaims any and all liability for any damages or losses incurred by you or any third parties arising from the use of any Renesas Electronics product that is inconsistent with any Renesas Electronics data sheet, user’s manual or other Renesas Electronics document. 6. When using Renesas Electronics products, refer to the latest product information (data sheets, user’s manuals, application notes, “General Notes for Handling and Using Semiconductor Devices” in the reliability handbook, etc.), and ensure that usage conditions are within the ranges specified by Renesas Electronics with respect to maximum ratings, operating power supply voltage range, heat dissipation characteristics, installation, etc. Renesas Electronics disclaims any and all liability for any malfunctions, failure or accident arising out of the use of Renesas Electronics products outside of such specified ranges. 7. Although Renesas Electronics endeavors to improve the quality and reliability of Renesas Electronics products, semiconductor products have specific characteristics, such as the occurrence of failure at a certain rate and malfunctions under certain use conditions. Unless designated as a high reliability product or a product for harsh environments in a Renesas Electronics data sheet or other Renesas Electronics document, Renesas Electronics products are not subject to radiation resistance design. You are responsible for implementing safety measures to guard against the possibility of bodily injury, injury or damage caused by fire, and/or danger to the public in the event of a failure or malfunction of Renesas Electronics products, such as safety design for hardware and software, including but not limited to redundancy, fire control and malfunction prevention, appropriate treatment for aging degradation or any other appropriate measures. Because the evaluation of microcomputer software alone is very difficult and impractical, you are responsible for evaluating the safety of the final products or systems manufactured by you. 8. Please contact a Renesas Electronics sales office for details as to environmental matters such as the environmental compatibility of each Renesas Electronics product. You are responsible for carefully and sufficiently investigating applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive, and using Renesas Electronics products in compliance with all these applicable laws and regulations. Renesas Electronics disclaims any and all liability for damages or losses occurring as a result of your noncompliance with applicable laws and regulations. 9. Renesas Electronics products and technologies shall not be used for or incorporated into any products or systems whose manufacture, use, or sale is prohibited under any applicable domestic or foreign laws or regulations. You shall comply with any applicable export control laws and regulations promulgated and administered by the governments of any countries asserting jurisdiction over the parties or transactions. 10. It is the responsibility of the buyer or distributor of Renesas Electronics products, or any other party who distributes, disposes of, or otherwise sells or transfers the product to a third party, to notify such third party in advance of the contents and conditions set forth in this document. 11. This document shall not be reprinted, reproduced or duplicated in any form, in whole or in part, without prior written consent of Renesas Electronics. 12. Please contact a Renesas Electronics sales office if you have any questions regarding the information contained in this document or Renesas Electronics products. (Note 1) “Renesas Electronics” as used in this document means Renesas Electronics Corporation and also includes its directly or indirectly controlled subsidiaries. (Note 2) “Renesas Electronics product(s)” means any product developed or manufactured by or for Renesas Electronics. (Rev.4.0-1 November 2017) SALES OFFICES http://www.renesas.com Refer to "http://www.renesas.com/" for the latest and detailed information. California Eastern Laboratories, Inc. 4590 Patrick Henry Drive, Santa Clara, California 95054-1817, U.S.A. Tel: +1-408-919-2500, Fax: +1-408-988-0279 Renesas Electronics Canada Limited 9251 Yonge Street, Suite 8309 Richmond Hill, Ontario Canada L4C 9T3 Tel: +1-905-237-2004 Renesas Electronics Europe Limited Dukes Meadow, Millboard Road, Bourne End, Buckinghamshire, SL8 5FH, U.K Tel: +44-1628-651-700 Renesas Electronics Europe GmbH Arcadiastrasse 10, 40472 Düsseldorf, Germany Tel: +49-211-6503-0, Fax: +49-211-6503-1327 Renesas Electronics (China) Co., Ltd. Room 1709 Quantum Plaza, No.27 ZhichunLu, Haidian District, Beijing, 100191 P. R. China Tel: +86-10-8235-1155, Fax: +86-10-8235-7679 Renesas Electronics (Shanghai) Co., Ltd. Unit 301, Tower A, Central Towers, 555 Langao Road, Putuo District, Shanghai, 200333 P. R. China Tel: +86-21-2226-0888, Fax: +86-21-2226-0999 Renesas Electronics Hong Kong Limited Unit 1601-1611, 16/F., Tower 2, Grand Century Place, 193 Prince Edward Road West, Mongkok, Kowloon, Hong Kong Tel: +852-2265-6688, Fax: +852 2886-9022 Renesas Electronics Taiwan Co., Ltd. 13F, No. 363, Fu Shing North Road, Taipei 10543, Taiwan Tel: +886-2-8175-9600, Fax: +886 2-8175-9670 Renesas Electronics Singapore Pte. Ltd. 80 Bendemeer Road, Unit #06-02 Hyflux Innovation Centre, Singapore 339949 Tel: +65-6213-0200, Fax: +65-6213-0300 Renesas Electronics Malaysia Sdn.Bhd. Unit 1207, Block B, Menara Amcorp, Amcorp Trade Centre, No. 18, Jln Persiaran Barat, 46050 Petaling Jaya, Selangor Darul Ehsan, Malaysia Tel: +60-3-7955-9390, Fax: +60-3-7955-9510 Renesas Electronics India Pvt. Ltd. No.777C, 100 Feet Road, HAL 2nd Stage, Indiranagar, Bangalore 560 038, India Tel: +91-80-67208700, Fax: +91-80-67208777 Renesas Electronics Korea Co., Ltd. 17F, KAMCO Yangjae Tower, 262, Gangnam-daero, Gangnam-gu, Seoul, 06265 Korea Tel: +82-2-558-3737, Fax: +82-2-558-5338 © 2018 Renesas Electronics Corporation. All rights reserved. Colophon 7.1