STMicroelectronics M7640 Manuals

This document describes the features and characteristics of the M54HC7245/7640/7643/7645 and M74HC7245/7640/7643/7645 models. They are high-speed, low-power, octal bus transceivers with high noise immunity. These devices are intended for two-way asynchronous communication between data buses, and the direction of data transmission is determined by the DIR input. The HC7245/640/7643/7645 have the same pin configuration and function as the HC245/640/643 and they have a hysteresis characteristics with each input, so they can be used as a line receiver, etc.

The M54HC7245 / 7640 / 7643 / 7645 M74HC7245 / 7640 / 7643 / 7645 is an eight-way bus transceiver with high speed, low power consumption and high noise immunity, capable of driving 15 LSTTL loads. These ICs are intended for two-way asynchronous communication between data buses, and the direction of data transmission is determined by DIR input. The enable input (G) can be used to disable the device so that the buses are effectively isolated.