Meets EIA Standard RS-485

Designed for High-Speed Multipoint

Transmission on Long Bus Lines in Noisy

Environments

Supports Data Rates up to and Exceeding

Ten Million Transfers Per Second

Common-Mode Output Voltage Range of

−7 V to 12 V

Positive- and Negative-Current Limiting

Low Power Consumption . . . 1.5 mA Max

(Output Disabled)

description

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.

The SN55LBC174 provides positive and negative-current limiting and thermal shutdown for protection from line

fault conditions on the transmission bus line. This device offers optimum performance when used with the

SN55LBC173 quadruple line receiver. The SN55LBC174 is available in the 16-pin CDIP package (J), the 16-pin

CPAK (W), or the 20-pin LCCC package (FK).

The SN55LBC174 is characterized for operation over the military temperature range of −55°C to 125°C.