SN75188 Quadruple Line Driver IC

The SN75188 is a monolithic quadruple line driver that is meant to connect data terminals to data communications equipment. They comply with ANSI Standards EIA/TIA-422-B, as well as RS-485 and ITU. In many applications, this is accomplished by connecting a diode in series with each supply-voltage terminal. The SN75188 Quadruple Line Driver IC is designed to operate at temperatures ranging from 0°C to 70°C in the military. The SN75188 is a 3-state output monolithic quadruple differential line driver. The 3-state outputs have a high-current capacity for driving balanced lines like twisted-pair or parallel-wire transmission lines, and they’re in a high-impedance state when the power is turned off.

The device is optimised for balanced multipoint bus transmission at up to 4 megabits per second. Each driver has a wide range of positive and negative common-mode output voltages, making it ideal for loud party-line applications. For protection against line fault circumstances on the transmission bus line, the SN75188 has positive and negative current limiting as well as a thermal shutdown mechanism. Shutdown usually happens at a junction temperature of around 150°C. When used with the SN75173 or SN75175 quadruple differential line receivers, this device performs well. The SN75188 is available in 14-pin PDIP broad body surface-mount packages. These line drivers IC devices are integrated circuit devices that separate the input and output circuits. Also reduces the load seen by the input circuit and enables signals to be sent on PCB or cables over longer distances with higher fan-out.