CMOS CMOS CMOS CMOS 4 44 4- -- -CH. CH. CH. CH. 3 33 3- -- -STATE STATE STATE STATE Differential Line Driver Differential Line Driver Differential Line Driver Differential Line Driver

The BL1501 is a 4-channel differential line driver designed for digital data transmission over balanced lines. It is designed to meet all the requirements of EIA standard RS-422 while retaining the low power characteristics of CMOS. This enables the construction of serial and terminal Interfaces while maintaining minimal power consumption. The BL1501 accepts TTL or CMOS input levels and translates these to RS-422 output levels. This device uses special output circuitry that enables the drivers to power down without loading down the bus. This device has enable and disable circuitry common to all four drivers. The BL1501 is pin compatible to the DS26C31(NS) and the AM26C31 TI) . All inputs are protected against damage due to electrostatic discharge by Diodes to VCC and ground. By Shanghai Belling Co, Ltd