SY10EL89ZC

NOT RECOMMENDED FOR NEW DESIGNS COAXIAL CABLE DRIVER FEATURES ■ ■ ■ ■ SY10EL89 FINAL DESCRIPTION 375ps propagation delay 1.6V output swings Internal 75KΩ input pull-down resistors Available in 8-pin SOIC package The SY10EL89 is a differential fanout gate specifically designed to drive coaxial cables. The device is especially useful in Digital Video Broadcast applications. For this application, since the system is polarity-free, each output of the device can be used as an independent driver. The driver boasts a voltage gain of approximately 40 and produces output swings twice as large as a standard ECL output. When driving a coaxial cable, proper termination is required at both ends of the line to minimize signal loss. The 1.6V output swings allow for termination at both ends of the cable while maintaining the required 800mV swing at the receiving end of the cable. Because of the larger output swings, the device cannot be terminated into the standard –2.0V. All of the DC parameters are tested with a 50Ω to –3.0V load. The driver accepts a standard differential ECL input and can run off the Digital Video Broadcast standard –5.0V supply. PIN CONFIGURATION/BLOCK DIAGRAM Q0 1 8 VCC Q0 2 7 D Q1 3 6 D Q1 4 5 VEE PIN NAMES Pin SOIC TOP VIEW Function D Data Inputs Q0, Q1 Data Outputs Rev.: G 1 Amendment: /0 Issue Date: February 2003 SY10EL89 Micrel DC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = GND TA = -40°C Symbol IEE TA = 0°C TA = +25°C TA = +85˚C Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Power Supply Current 18 23 28 18 23 28 18 23 28 18 23 28 mA Output HIGH Voltage(1) –1.23 –1.10 –0.98 –1.17 –1.05 –0.93 –1.13 –1.02 –0.90 –1.06 –0.96 –0.81 V VOL Output LOW Voltage(1) –2.84 –2.72 –2.58 –2.84 –2.70 –2.56 –2.84 –2.70 –2.56 –2.84 –2.67 –2.51 V VEE Power Supply Voltage –4.75 — –5.5 –4.75 — –5.5 –4.75 — –5.5 –4.75 — –5.5 V IIH Input HIGH Current — — 150 — — 150 — — 150 — — 150 µA VOH NOTE: 1. VOH and VOL specified for 50Ω to –3.0V load. AC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = GND TA = -40°C Symbol Parameter TA = 0°C TA = +25°C TA = +85˚C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit tPLH tPHL Propagation Delay to Output D 200 340 480 250 340 430 260 350 440 310 400 490 ps tskew Within-Device Skew — 5 20 — 5 20 — 5 20 — 5 20 ps Minimum Input Swing(1) 150 — — 150 — — 150 — — 150 — — mV VCMR Common Mode Range(2) (2) — –0.4 (2) — –0.4 (2) — –0.4 (2) — –0.4 V tr tf Output Rise/Fall Times Q 205 (20% to 80%) 330 455 205 330 455 205 330 455 205 330 455 ps VPP NOTES: 1. Minimum input swing for which AC parameters are guaranteed. The device has a DC gain of ≈40. 2. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies between VPP (Min._ and 1V. The lower end of the CMR range is dependent on VEE and is equal to VEE + 2.5V. 2 SY10EL89 Micrel DC BLOCKING CAPACITORS DC BLOCKING CAPACITORS 75Ω 75Ω COAX 0.1µF EL89 75Ω 75Ω COAX 150Ω 150Ω 0.1µF VEE Figure 1. Termination Configuration PRODUCT ORDERING CODE Ordering Code SY10EL89ZC SY10EL89ZCTR* Package Type Operating Range Marking Code Z8-1 Commercial HEL89 HEL89 Z8-1 Commercial Ordering Code *Tape and Reel Note 1. Recommended for new designs. 3 Package Type Operating Range Marking Code SY10EL89ZI(1) Z8-1 Industrial HEL89 SY10EL89ZITR*(1) Z8-1 Industrial HEL89 SY10EL89 Micrel 8 LEAD SOIC .150" WIDE (Z8-1) Rev. 03 MICREL, INC. TEL 1849 FORTUNE DRIVE SAN JOSE, CA 95131 + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB USA 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. © 2003 Micrel, Incorporated. 4