CY74FCT2245T 8-BIT TRANSCEIVER WITH 3-STATE OUTPUTS SCCS037B – JULY 1994 – REVISED NOVEMBER 2001 (cid:0) Function and Pinout Compatible With FCT P, Q, OR SO PACKAGE and F Logic (TOP VIEW) (cid:0) 25-Ω Output Series Resistors to Reduce T/R 1 20 VCC Transmission-Line Reflection Noise (cid:0) A0 2 19 OE Edge-Rate Control Circuitry for A1 3 18 B0 Significantly Improved Noise A2 4 17 B1 Characteristics A3 5 16 B2 (cid:0) Ioff Supports Partial-Power-Down Mode A4 6 15 B3 Operation A 7 14 B 5 4 (cid:0) Fully Compatible With TTL Input and A6 8 13 B5 Output Logic Levels A7 9 12 B6 (cid:0) GND 10 11 B ESD Protection Exceeds JESD 22 7 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) (cid:0) 12-mA Output Sink Current 15-mA Output Source Current (cid:0) 3-State Outputs description The CY74FCT2245T contains eight noninverting, bidirectional buffers with 3-state outputs intended for bus-oriented applications. On-chip termination resistors at the outputs reduce system noise caused by reflections. For this reason, the CY74FCT2245T can replace the CY74FCT245T in an existing design. The CY74FCT2245T current-sinking capability is 12 mA at the A and B ports. The transmit/receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active high) enables data from A ports to B ports; receive (active low) enables data from B ports to A ports. The output-enable (OE) input, when high, disables both the A and B ports by putting them in the high-impedance state. This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. ORDERING INFORMATION SPEED ORDERABLE TOP-SIDE TA PACKAGE† (ns) PART NUMBER MARKING QSOP – Q Tape and reel 4.1 CY74FCT2245CTQCT FCT2245 Tube 4.1 CY74FCT2245CTSOC SSOOIICC – SSOO FFCCTT22224455 Tape and reel 4.1 CY74FCT2245CTSOCT DIP – P Tube 4.6 CY74FCT2245ATPC 74FCT2245ATPC QSOP – Q Tape and reel 4.6 CY74FCT2245ATQCT FCT2245A –4400°°CC ttoo 8855°°CC Tube 4.6 CY74FCT2245ATSOC SSOOIICC – SSOO FFCCTT22224455AA Tape and reel 4.6 CY74FCT2245ATSOCT QSOP – Q Tape and reel 7.0 CY74FCT2245TQCT FCT2245 Tube 7.0 CY74FCT2245TSOC SSOOIICC – SSOO FFCCTT22224455 Tape and reel 7.0 CY74FCT2245TSOCT †Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright  2001, Texas Instruments Incorporated Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

CY74FCT2245T 8-BIT TRANSCEIVER WITH 3-STATE OUTPUTS SCCS037B – JULY 1994 – REVISED NOVEMBER 2001 FUNCTION TABLE INPUTS OOUUTTPPUUTT OE T/R L L Bus B data to bus A L H Bus A data to bus B H X Z H = High logic level, L = Low logic level, X = Don’t care, Z = High-impedance state logic diagram (positive logic) 1 T/R 19 OE 2 A0 18 B0 To Seven Other Channels absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range to ground potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V DC input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V DC output voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V DC output current (maximum sink current/pin) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 mA Package thermal impedance, θ (see Note 1): P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W JA Q package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68°C/W SO package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W Ambient temperature range with power applied, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 135°C A Storage temperature range, T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C stg †Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: The package thermal impedance is calculated in accordance with JESD 51-7. recommended operating conditions (see Note 2) MIN NOM MAX UNIT VCC Supply voltage 4.75 5 5.25 V VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V IOH High-level output current –15 mA IOL Low-level output current 12 mA TA Operating free-air temperature –40 85 °C NOTE 2: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

CY74FCT2245T 8-BIT TRANSCEIVER WITH 3-STATE OUTPUTS SCCS037B – JULY 1994 – REVISED NOVEMBER 2001 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VIK VCC = 4.75, IIN = –18 mA –0.7 –1.2 V VOH VCC = 4.75, IOH = –15 mA 2.4 3.3 V VOL VCC = 4.75, IOL = 12 mA 0.3 0.55 V Rout VCC = 4.75, IOL = 12 mA 20 25 40 Ω Vhys All inputs 0.2 V II VCC = 5.25 V, VIN = VCC 5 µA IIH VCC = 5.25 V, VIN = 2.7 V ±1 µA IIL VCC = 5.25 V, VIN = 0.5 V ±1 µA IOZH VCC = 5.25 V, VOUT = 2.7 V 10 µA IOZL VCC = 5.25 V, VOUT = 0.5 V –10 µA IOS‡ VCC = 5.25 V, VOUT = 0 V –60 –120 –225 mA Ioff VCC = 0 V, VOUT = 4.5 V ±1 µA ICC VCC = 5.25 V, VIN ≤ 0.2 V, VIN ≥VCC – 0.2 V 0.1 0.2 mA ∆ICC VCC = 5.25 V, VIN = 3.4 V§, f1 = 0, Outputs open 0.5 2 mA ICCD¶ VT/CRC = = O 5E.2 =5 GV,N ODn, eV iInNp ≤ut0 s.2w iVtc hoirn VgI Nat ≥50V%C Cd u–t y0 c.2y cVle, Outputs open, 0.06 0.12 MmHAz/ One input switching VIN ≤0.2 V or 0.7 1.4 at f11 = 10 MHz VIN ≥VCC – 0.2 V IICC### VOOCuuttCpp uu=tt ss5 oo.2pp5ee nnV,, at 50% duty cycle VIN = 3.4 V or GND 1 2.4 mmAA T/R = OE = GND Eight bits switching VIN ≤0.2 V or 1.3 2.6|| at f11 = 2.5 MHz VIN ≥VCC – 0.2 V at 50% duty cycle VIN = 3.4 V or GND 3.3 10.6|| Ci 5 10 pF Co 9 12 pF †Typical values are at VCC = 5 V, TA = 25°C. ‡Not more than one output should be shorted at a time. Duration of short should not exceed one second. The use of high-speed test apparatus and/or sample-and-hold techniques are preferable to minimize internal chip heating and more accurately reflect operational values. Otherwise, prolonged shorting of a high output can raise the chip temperature well above normal and cause invalid readings in other parametric tests. In any sequence of parameter tests, IOS tests should be performed last. §Per TTL-driven input (VIN = 3.4 V); all other inputs at VCC or GND ¶This parameter is derived for use in total power-supply calculations. #IC = ICC + ∆ICC × DH × NT + ICCD (f0/2 + f1 × N1) Where: IC = Total supply current ICC = Power-supply current with CMOS input levels ∆ICC = Power-supply current for a TTL high input (VIN = 3.4 V) DH = Duty cycle for TTL inputs high NT = Number of TTL inputs at DH ICCD = Dynamic current caused by an input transition pair (HLH or LHL) f0 = Clock frequency for registered devices, otherwise zero f1 = Input signal frequency N1 = Number of inputs changing at f1 All currents are in milliamperes and all frequencies are in megahertz. ||Values for these conditions are examples of the ICC formula. POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3

CY74FCT2245T 8-BIT TRANSCEIVER WITH 3-STATE OUTPUTS SCCS037B – JULY 1994 – REVISED NOVEMBER 2001 switching characteristics over operating free-air temperature range (see Figure 1) FROM TO CY74FCT2245T CY74FCT2245AT CY74FCT2245CT PPAARRAAMMEETTEERR UUNNIITT (INPUT) (OUTPUT) MIN MAX MIN MAX MIN MAX tPLH 1.5 7 1.5 4.6 1.5 4.1 AAn oorr BBn BBn oorr AAn nnss tPHL 1.5 7 1.5 4.6 1.5 4.1 tPZH 1.5 9.5 1.5 6.2 1.5 5.8 OOEE AA oorr BB nnss tPZL 1.5 9.5 1.5 6.2 1.5 5.8 tPHZ 1.5 7.5 1.5 5 1.5 4.5 OOEE AA oorr BB nnss tPLZ 1.5 7.5 1.5 5 1.5 4.5 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

CY74FCT2245T 8-BIT TRANSCEIVER WITH 3-STATE OUTPUTS SCCS037B – JULY 1994 – REVISED NOVEMBER 2001 PARAMETER MEASUREMENT INFORMATION 7 V 500 Ω S1 Open From Output Test From Output Under Test Point Under Test GND TEST S1 (sCeeL N= o5t0e pAF) 500 Ω (sCeeL N= o5t0e pAF) 500 Ω ttPPLLHZ//ttPPZHLL O7p Ven tPHZ/tPZH Open LOAD CIRCUIT FOR LOAD CIRCUIT FOR TOTEM-POLE OUTPUTS 3-STATE OUTPUTS 3 V Timing Input 1.5 V tw 0 V th 3 V tsu 3 V Input 1.5 V 1.5 V Data Input 1.5 V 1.5 V 0 V 0 V VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS PULSE DURATION SETUP AND HOLD TIMES 3 V 3 V Output Input 1.5 V 1.5 V Control 1.5 V 1.5 V 0 V 0 V tPLH tPHL tPZL tPLZ In-Phase VOH Output ≈3.5 V Output 1.5 V 1.5 V Waveform 1 1.5 V VOL + 0.3 V VOL (see Note B) VOL tPHL tPLH tPZH tPHZ VOH Output VOH Out-of-Phase 1.5 V 1.5 V Waveform 2 1.5 V VOH – 0.3 V Output VOL (see Note B) ≈0 V VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS PROPAGATION DELAY TIMES ENABLE AND DISABLE TIMES INVERTING AND NONINVERTING OUTPUTS LOW- AND HIGH-LEVEL ENABLING NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. C. The outputs are measured one at a time with one input transition per measurement. Figure 1. Load Circuit and Voltage Waveforms POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 PACKAGING INFORMATION Orderable Device Status Package Type Package Pins Package Eco Plan Lead/Ball Finish MSL Peak Temp Op Temp (°C) Device Marking Samples (1) Drawing Qty (2) (6) (3) (4/5) CY74FCT2245ATPC ACTIVE PDIP N 20 20 Pb-Free NIPDAU N / A for Pkg Type -40 to 85 74FCT2245ATPC (RoHS) CY74FCT2245ATPWR ACTIVE TSSOP PW 20 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 FR245AT & no Sb/Br) CY74FCT2245ATPWRG4 ACTIVE TSSOP PW 20 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 FR245AT & no Sb/Br) CY74FCT2245ATQCT ACTIVE SSOP DBQ 20 2500 Green (RoHS NIPDAU Level-2-260C-1 YEAR -40 to 85 FCT2245A & no Sb/Br) CY74FCT2245ATQCTE4 ACTIVE SSOP DBQ 20 2500 Green (RoHS NIPDAU Level-2-260C-1 YEAR -40 to 85 FCT2245A & no Sb/Br) CY74FCT2245ATSOC ACTIVE SOIC DW 20 25 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 FCT2245A & no Sb/Br) CY74FCT2245ATSOCT ACTIVE SOIC DW 20 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 FCT2245A & no Sb/Br) CY74FCT2245CTQCT ACTIVE SSOP DBQ 20 2500 Green (RoHS NIPDAU Level-2-260C-1 YEAR -40 to 85 FCT2245C & no Sb/Br) CY74FCT2245CTSOCT ACTIVE SOIC DW 20 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 FCT2245C & no Sb/Br) CY74FCT2245TQCT ACTIVE SSOP DBQ 20 2500 Green (RoHS NIPDAU Level-2-260C-1 YEAR -40 to 85 FCT2245 & no Sb/Br) CY74FCT2245TSOC ACTIVE SOIC DW 20 25 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 FCT2245 & no Sb/Br) CY74FCT2245TSOCT ACTIVE SOIC DW 20 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 FCT2245 & no Sb/Br) CY74FCT2245TSOCTE4 ACTIVE SOIC DW 20 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 FCT2245 & no Sb/Br) CY74FCT2245TSOCTG4 ACTIVE SOIC DW 20 2000 Green (RoHS NIPDAU Level-1-260C-UNLIM -40 to 85 FCT2245 & no Sb/Br) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. Addendum-Page 1

PACKAGE OPTION ADDENDUM www.ti.com 6-Feb-2020 (2) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based flame retardants must also meet the <=1000ppm threshold requirement. (3) MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device. (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. (6) Lead/Ball Finish - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead/Ball Finish values may wrap to two lines if the finish value exceeds the maximum column width. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis. Addendum-Page 2

PACKAGE MATERIALS INFORMATION www.ti.com 2-Oct-2019 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0 B0 K0 P1 W Pin1 Type Drawing Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant (mm) W1(mm) CY74FCT2245ATPWR TSSOP PW 20 2000 330.0 16.4 6.95 7.0 1.4 8.0 16.0 Q1 CY74FCT2245ATQCT SSOP DBQ 20 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 CY74FCT2245ATSOCT SOIC DW 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.0 Q1 CY74FCT2245CTQCT SSOP DBQ 20 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 CY74FCT2245CTSOCT SOIC DW 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.0 Q1 CY74FCT2245TQCT SSOP DBQ 20 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 CY74FCT2245TSOCT SOIC DW 20 2000 330.0 24.4 10.8 13.3 2.7 12.0 24.0 Q1 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 2-Oct-2019 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) CY74FCT2245ATPWR TSSOP PW 20 2000 367.0 367.0 38.0 CY74FCT2245ATQCT SSOP DBQ 20 2500 367.0 367.0 38.0 CY74FCT2245ATSOCT SOIC DW 20 2000 367.0 367.0 45.0 CY74FCT2245CTQCT SSOP DBQ 20 2500 367.0 367.0 38.0 CY74FCT2245CTSOCT SOIC DW 20 2000 367.0 367.0 45.0 CY74FCT2245TQCT SSOP DBQ 20 2500 367.0 367.0 38.0 CY74FCT2245TSOCT SOIC DW 20 2000 367.0 367.0 45.0 PackMaterials-Page2

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PACKAGE OUTLINE DW0020A SOIC - 2.65 mm max height SCALE 1.200 SOIC C 10.63 SEATING PLANE TYP 9.97 A PIN 1 ID 0.1 C AREA 18X 1.27 20 1 13.0 2X 12.6 11.43 NOTE 3 10 11 0.51 20X 7.6 0.31 2.65 MAX B 7.4 0.25 C A B NOTE 4 0.33 TYP 0.10 0.25 SEE DETAIL A GAGE PLANE 0.3 1.27 0 - 8 0.1 0.40 DETAIL A TYPICAL 4220724/A 05/2016 NOTES: 1. All linear dimensions are in millimeters. Dimensions in parenthesis are for reference only. Dimensioning and tolerancing per ASME Y14.5M. 2. This drawing is subject to change without notice. 3. This dimension does not include mold flash, protrusions, or gate burrs. Mold flash, protrusions, or gate burrs shall not exceed 0.15 mm per side. 4. This dimension does not include interlead flash. Interlead flash shall not exceed 0.43 mm per side. 5. Reference JEDEC registration MS-013. www.ti.com

EXAMPLE BOARD LAYOUT DW0020A SOIC - 2.65 mm max height SOIC 20X (2) SYMM 1 20 20X (0.6) 18X (1.27) SYMM (R0.05) TYP 10 11 (9.3) LAND PATTERN EXAMPLE SCALE:6X SOOPLEDNEINRG MASK METAL MSOELTDAEL RU NMDAESRK SOOPLEDNEINRG MASK 0.07 MAX 0.07 MIN ALL AROUND ALL AROUND NON SOLDER MASK SOLDER MASK DEFINED DEFINED SOLDER MASK DETAILS 4220724/A 05/2016 NOTES: (continued) 6. Publication IPC-7351 may have alternate designs. 7. Solder mask tolerances between and around signal pads can vary based on board fabrication site. www.ti.com

EXAMPLE STENCIL DESIGN DW0020A SOIC - 2.65 mm max height SOIC 20X (2) SYMM 1 20 20X (0.6) 18X (1.27) SYMM 10 11 (9.3) SOLDER PASTE EXAMPLE BASED ON 0.125 mm THICK STENCIL SCALE:6X 4220724/A 05/2016 NOTES: (continued) 8. Laser cutting apertures with trapezoidal walls and rounded corners may offer better paste release. IPC-7525 may have alternate design recommendations. 9. Board assembly site may have different recommendations for stencil design. www.ti.com

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