Bidirectional Bus Transceivers in
High-Density 20-Pin Packages
Low-Power Versions of 4ALS245 Series
4ALS1245 Series Is Identical to 4ALS1645
Series
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic (N)
and Ceramic (J) 300-mil DIPs

description
These octal bus transceivers are designed for
asynchronous two-way communication between
data buses. These devices transmit data from the
A bus to the B bus or from the B bus to the A bus,
depending on the logic level at the directioncontrol
(DIR) input. The output-enable (OE) input
can be used to disable the device so the buses are
effectively isolated.
The SN54ALS1245A is characterized for
operation over the full military temperature range
of –55°C to 125°C. The SN74ALS1245A is
characterized for operation from 0°C to 70°C.