SN55LBC174

SN55LBC174 QUADRUPLE LOWĆPOWER DIFFERENTIAL LINE DRIVER SGLS082A − MARCH 1995 − REVISED JULY 2004 D Meets EIA Standard RS-485 D Designed for High-Speed Multipoint Transmission on Long Bus Lines in Noisy Environments D Supports Data Rates up to and Exceeding Ten Million Transfers Per Second D Common-Mode Output Voltage Range of −7 V to 12 V D Positive- and Negative-Current Limiting D Low Power Consumption . . . 1.5 mA Max (Output Disabled) description J OR W PACKAGE (TOP VIEW) 1A 1 1Y 2 1Z 3 1, 2EN 4 2Z 5 2Y 6 2A 7 GND 8 16 VCC 15 4A 14 4Y 13 4Z 12 3, 4EN 11 3Z 10 3Y 9 3A FK PACKAGE (TOP VIEW) 1Y 1A NC VCC 4A The SN55LBC174 is composed of monolithic quadruple differential line drivers with 3-state outputs. This device is designed to meet the requirements of the Electronics Industry Association (EIA) Standard RS-485 and is optimized for balanced multipoint bus transmission at data rates up to and exceeding 10 million bits per second. Each driver features wide positive and negative common-mode output voltage ranges, current limiting, and thermal-shutdown protection making it suitable for party-line applications in noisy environments. This device is designed using LinBiCMOS, facilitating ultra-low power consumption and inherent robustness. 3 2 1 20 19 1Z 4 18 4Y 1, 2EN 5 17 4Z NC 6 16 NC 2Z 7 15 3, 4EN 2Y 8 14 3Z 9 10 11 12 13 2A GND NC 3A 3Y NC − No internal connection The SN55LBC174 provides positive and negative-current limiting and thermal shutdown for...