Quadruple RS‑485 Differential Line Drivers IC SN75LBC174A

Description

The SN75LBC174A is a quadruple differential line driver with 3‑state outputs specifically designed for balanced multipoint data transmission on TIA/EIA‑485 (RS‑485) and TIA/EIA‑422 (RS‑422) communication buses. The device drives balanced transmission lines at signaling rates up to 30 Mbps, making it suitable for high‑speed differential data links such as industrial networks or multi‑node bus systems. It includes current limiting and thermal shutdown protection for robust operation in noisy environments.

FEATURES

Channels: 4 differential drivers, 0 receivers
Supply Voltage (Nominal): 5 V
Signaling/Data Rate: up to 30 Mbps
Propagation Delay: < 11 ns typical
Standby / Supply Current: ~1.5 mA max
Output ESD Protection: ±12 kV HBM
Common‑Mode Voltage Range: –7 V to +12 V
Fault Protection Voltage: –10 V to +15 V
Enable/Disable: Two EN inputs provide pair‑wise or global 3‑state enable control
Thermal Shutdown: Yes, built‑in protection
LinBiCMOS Technology: Low power and robust performance
Temperature Rating: 0 °C to +70 °C
Mounting Style: Surface Mount