FEATURES

· Member of the Texas Instruments Widebus™

Family

· Bus Hold on Data Inputs Eliminates the Need

for External Pullup/Pulldown Resistors

· Latch-Up Performance Exceeds 250 mA Per

JESD 17

· ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

DESCRIPTION/ORDERING INFORMATION

This device contains four independent noninverting

buffers and an 8-bit noninverting bus transceiver and

D-type latch, designed for 1.65-V to 3.6-V VCC

operation.

The SN74ALVCH16973 is particularly suitable for

demultiplexing an address/data bus into a dedicated

address bus and dedicated data bus. The device is

used where there is asynchronous bidirectional

communication between the A and B data bus, and

the address signals are latched and buffered on the

Q bus. The control-function implementation minimizes

external timing requirements.

This device can be used as one 4-bit buffer, one 8-bit

transceiver, or one 8-bit latch. It allows data

transmission from the A bus to the B bus or from the

B bus to the A bus, depending on the logic level at

the direction-control (DIR) input. The transceiver

output-enable (TOE) input can be used to disable the

transceivers so that the A and B buses effectively are

isolated.