Micrel, Inc. 5V/3.3V 155Mbps LASER DIODE SY88822V SY88822V DRIVER WITH OUTPUT ENABLE FEATURES DESCRIPTION (cid:1) Single 3.3V or 5V power supply The SY88822V is a high speed current switch for driving (cid:1) Up to 155Mbps operation a semiconductor laser diode in optical transmission applications. The modulation current (I ) is controlled by (cid:1) Modulation current to 30mA OUT the current (I ) through the external resistor R . The (cid:1) PECL output enable output OUT RisS EHTIGH and no current flows throuSgEhT OUT (cid:1) Differential PECL inputs when output enable is HIGH. (cid:1) Available in a tiny 10-pin (3mm) MSOP The device incorporates complementary open collector outputs with a 30mA maximum current driving capability. The external resistor R must be placed between /OUT EXT and V to dissipate the worst case power. R is CC SER recommended to compensate for laser diode matching issues. Pin 9 and pin 10 should be connected to achieve APPLICATIONS better performance. The SY88822V utilizes the high performance bipolar (cid:1) 155Mbps SONET ASSET™ technology. FUNCTIONAL BLOCK DIAGRAM V CC R EXT /OUT OUT R SER DIN toLaserDiode /DIN Internal I Logic MOD /EN 40X V CC GND GND V R REF SET R SET ASSET is a trademark of Micrel, Inc. M9999-072505 Rev.: B Amendment: /0 hbwhelp@micrel.com or (408) 955-1690 1 Issue Date: July 2005

Micrel, Inc. SY88822V PACKAGE/ORDERING INFORMATION Ordering Information Package Operating Package Lead /EN 1 10 OUT Part Number Type Range Marking Finish DIN 2 9 OUT SY88822VKC K10-1 Commercial 822V Sn-Pb /DIN 3 8 /OUT SY88822VKCTR(1) K10-1 Commercial 822V Sn-Pb VREF 4 7 GND SY88822VKG K10-1 Industrial 822V with Pb-Free RSET 5 6 VCC Pb-Free bar-line indicator NiPdAu 10-Pin MSOP SY88822VKGTR(1) K10-1 Industrial 822V with Pb-Free (K10-1) Pb-Free bar-line indicator NiPdAu Note: 1. Tape and Reel. PIN DESCRIPTION Pin Number Pin Name Pin Function 1 /EN 100k PECL compatible input w/ 75kΩ pulldown resistor. Modulation current goes to zero when deasserted high. 2, 3 DIN, /DIN Differential 100k PECL compatible input w/ 75kΩ pulldown resistors. 4 VREF Voltage reference for use with R . SET 5 RSET An external resistor from here to V sets the reference current for I . REF OUT 6 VCC Positive power supply. 7 GND Device ground. 8, 9, 10 /OUT, OUT Differential open collector current outputs. TRUTH TABLE(1) D /D /EN OUT (Note 2) /OUT L H L H L H L L L H X X H H L Notes: 1. L = LOW, H = HIGH, X = don't care. 2. H = I = 0mA. OUT M9999-072505 hbwhelp@micrel.com or (408) 955-1690 2

Micrel, Inc. SY88822V Absolute Maximum Ratings(1) Operating Ratings(2, 3, 4) Power Supply Voltage (V )............................ 0V to +7.0V Supply Voltage (V ) ...................................+3.0V to +3.6V CC IN Input Voltage (V ) ..............................................0V to V ........................................................or +4.5V to +5.5V IN CC Output Current (IOUT).................................................30mA Ambient Temperature (TA), Note 5............–40°C to +85°C Power Dissipation (PD) ...........................................250mW Junction Temperature (TJ), Note 5 ............–40°C to 100°C Lead Temperature (soldering, 20 sec.)...................+260°C Resistor to Dissipate Power (REXT) ..................10Ω to 50Ω Storage Temperature Range (TS)............–55°C to +125°C Laser Diode Serial Resistor (RSER) ....................0Ω to 50Ω Resistor to Adjust Current (R ), Note 6 SET ......................................................... 700Ω to 20,000Ω Package Thermal Resistance MSOP (θ ) Still-Air......................................................113°C/W JA (ψ ) Still-Air........................................................74°C/W JB DC ELECTRICAL CHARACTERISTICS(7) GND = 0V; V = 3.3V ±10% or V = 5.0V ±10%; T = –40°C to +85°C CC CC A Symbol Parameter Condition Min Typ Max Units V Input HIGH Voltage V –1.165 V –0.880 V IH CC CC (D , /D , /EN) IN IN V Input LOW Voltage V –1.810 V –1.475 V IL CC CC (D , /D , /EN) IN IN V Reference Voltage 1.7 2.0 2.3 V REF I Input LOW Current V = V 0.5 µA IL I IL(min) (D , /D , /EN) IN IN I Input HIGH Current 100 µA IH (D , /D , /EN) IN IN I Supply Current I = 25mA 25 mA CC MOD I Output LOW Current 450 1000 µA OUT_OFF (/EN = HIGH) I Modulation Current 30 mA OUT A I /I 30 38 44 — RSET OUT RSET V Voltage at OUT, /OUT V –1.4 V V OUT CC CC C Capacitance on OUT, /OUT 2.5 pF OUT Notes: 1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratlng conditions for extended periods may affect device reliability. 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. The device is guaranteed to meet the DC specifications, shown in the table above, after thermal equilibrium has been established. The device is tested in a socket such that transverse airflow of ≥500lfpm is maintained. 4. The voltage drop across R and R plus Laser Diode must not be greater than 1.4V. EXT SER 5. Commercial devices are guaranteed from 0°C to +85°C ambient temperature. 6. R minimum 430Ω. SET 7. Specification for packaged product only. M9999-072505 hbwhelp@micrel.com or (408) 955-1690 3

Micrel, Inc. SY88822V AC ELECTRICAL CHARACTERISTICS(8, 9) I =10mA; GND = 0V; V = 3.3V ±10% or V = 5.0V ±10%; T = –40°C to +85°C MOD CC CC A Symbol Parameter Condition Min Typ Max Units t ,t D Propagation Delay I = 10mA 1000 ps PHL PLH OUT D – OUT IN t ,t EN Propagation Delay I = 10mA 1000 ps PHL PLH OUT /EN – OUT t, t Rise/Fall Time 1000 ps r f (20% to 80%) I Output Current Ringing I = 5 to 30mA 10 % OR OUT Notes: 8. Specification for packaged product only. 9. REXT = RSER = 25Ω ±1%; RSER connected directly to VCC. TYPICAL OPERATING CHARACTERISTICS I vs. R MOD SET 40 30 A) VCC = 5.0V m (D20 O M I 10 V = 3.3V CC 0 0.0 1.0 2.0 3.0 4.0 5.0 RSET (kΩ) M9999-072505 hbwhelp@micrel.com or (408) 955-1690 4

Micrel, Inc. SY88822V 10 LEAD MSOP (K10-1) Rev. 00 MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2005 Micrel, Incorporated. M9999-072505 hbwhelp@micrel.com or (408) 955-1690 5

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