SN74ALS638A Overview
Key Specifications
Package: PDIP
Mount Type: Through Hole
Pins: 20
Operating Voltage: 5 V
Description
These octal bus transceivers are designed for asynchronous two-way communication between open-collector and 3-state buses. The devices transmit data from the A bus (open-collector) to the B bus (3 state) or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input.