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DS9638J/883
RS-422 Dual High Speed Differential Line Driver
DS9638QML
www.ti.com SNOSB15A –MAY 2008–REVISED APRIL 2013
DS9638QML RS-422 Dual High Speed Differential Line Driver
Checkfor Samples: DS9638QML
1FEATURES Single 5V Supply Variations (<2.0 ns typical) (Figure4) Schottky Technology • Extended Temperature Range TTL and CMOS Compatible Inputs DESCRIPTION• Output Short Circuit Protection The DS9638isa Schottky, TTL compatible, dual
• Input Clamp Diodes differential line driver designed specificallyto meet
• Complementary Outputs the EIA Standard RS-422 specifications. It is
designed to provide unipolar differential drive to
• Minimum Output Skew (<1.0ns Typical) twisted pairor parallel wire transmission lines. The
• 50 mA Output Drive Capability for 50Ω inputs are TTL compatible. The outputs are similarto
Transmission Lines totem pole TTL outputs, with active pull-up and pull-
Meets EIA RS-422 Specifications down. The device featuresa short circuit protected
active pull-up with low output impedance andis
• Propagation Delayof Less than10 ns specified to drive 50Ω transmission lines at high
• “Glitchless” Differential Output speed. The mini-CDIP provides high package density.
• Delay Time Stable with VCC and Temperature
Connection Diagram
Figure1. 8-Lead CDIP, Top ViewThese devices have limited built-in ESD protection. The leads shouldbe shorted togetherorthe device placedin conductive foam
during storageor handlingto prevent electrostatic damagetothe MOS gates.
