FEATURES

· Member of the Texas Instruments Widebus™

Family

· Operates From 1.65 V to 3.6 V

· Max tpd of 4.2 ns at 3.3 V

· ±12-mA Output Drive at 3.3 V

· All Outputs Have Equivalent 26-W Series

Resistors, So No External Resistors Are

Required

· 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)

DESCRIPTION/ORDERING INFORMATION

This 16-bit (dual-octal) noninverting bus transceiver is

designed for 1.65-V to 3.6-V VCC operation.

The SN74ALVCHR16245 is designed for

asynchronous communication between data buses.

The control-function implementation minimizes

external timing requirements.

This device can be used as two 8-bit transceivers or

one 16-bit transceiver. 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 output-enable (OE)

input can be used to disable the device so that the

buses are effectively isolated.

All outputs, which are designed to sink up to 12 mA, include equivalent 26-W series resistors to reduce overshoot

and undershoot.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors

with the bus-hold circuitry is not recommended.