SN74AVCH32T245

32BIT DUALSUPPLY BUS TRANSCEIVER

WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3STATE OUTPUTS

SCES589B − AUGUST 2004 − REVISED APRIL 2005

1

POST OFFICE BOX 655303

Widebus+

 Family

Is at GND, Both Ports Are in the

High-Impedance State

Mixed-Voltage-Mode Data Communications

Each Port to Operate Over the Full 1.2-V to

3.6-V Power-Supply Range

Operation

Need for External Pullup/Pulldown

Resistors

JESD 78, Class II

− 8000-V Human-Body Model (A114-A)

− 200-V Machine Model (A115-A)

− 1000-V Charged-Device Model (C101)

description/ordering information

This 32-bit noninverting bus transceiver uses two separate configurable power-supply rails. The

low-voltage bidirectional translation between any of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes.

The SN74AVCH32T245 is designed for asynchronous communication between data buses. The device

transmits 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

direction-control (DIR) input. The output-enable (OE) input can be used to disable the outputs so the buses are

effectively isolated.

The SN74AVCH32T245 is designed so that the control pins (1DIR, 2DIR, 3DIR, 4DIR, 1OE, 2OE, 3OE, and

preventing damaging current backflow through the device when it is powered down.

state.

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.

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

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

−40

°C to 85°C

LFBGA − GKE

Tape and reel

SN74AVCH32T245KR

WJ245

−40

°C to 85°C

LFBGA − ZKE (Pb-free)

Tape and reel

74AVCH32T245ZKER

WJ245

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

Copyright

 2005, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Widebus+ is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.