uA9638C

UA9638 SLLS112D – APRIL 1994 – REVISED MARCH 2024 uA9638C Dual High-Speed Differential Line Driver 1 Features Meets or exceeds ANSI standard EIA/TIA-422-B Operates from a single 5V power supply Drives loads as low as 50Ω up to 15Mbps TTL- and CMOS-input compatibility Output short-circuit protection Interchangeable with DS9638 2 Applications Factory automation ATM and cash counters Smart grid AC and servo motor drives 3 Description The uA9638 is a dual high-speed differential line driver designed to meet ANSI Standard EIA/TIA-422B. The inputs are TTL and CMOS compatible and have input clamp diodes. Schottky-diode-clamped transistors are used to minimize propagation delay time. This device operates from a single 5V power supply and is supplied in an 8-pin package. The uA9638 provides the current needed to drive lowimpedance loads at high speeds. Typically used with twisted-pair cabling and differential receiver(s), baseband data transmission can be accomplished up to and exceeding 15Mbps in properly designed systems. The uA9637A dual line receiver is commonly used as the receiver. For even faster switching speeds in the same pin configuration, see the SN75ALS191. The uA9638 is characterized for operation from 0°C to 70°C. Package Information PART NUMBER PACKAGE(1) PACKAGE SIZE(2) uA9638 SOIC (D, 8) PDIP (P, 8) 4.9mm × 6mm 9.81mm × 9.43mm (1) For more information, see Section 10. (2) The package size (length × width) is a nominal value and includ...