SN54ALVTH162245, SN74ALVTH162245

2.5-V/3.3-V 16-BIT BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCES331A – APRIL 2000 – REVISED APRIL 2002

1

POST OFFICE BOX 655303

Technology (ABT) Widebus

 Design for

2.5-V and 3.3-V Operation and Low

Static-Power Dissipation

Input and Output Voltages With 2.3-V to

Insertion

External Pullup/Pulldown Resistors to

Prevent the Bus From Floating

Series Resistors, So No External Resistors

Are Required

Printed Circuit Board Layout

High-Speed Switching Noise

JESD 78, Class II

description

The ’ALVTH162245 devices are 16-bit (dual-octal) noninverting 3-state transceivers designed for 2.5-V or 3.3-V

These devices can be used as two 8-bit transceivers or one 16-bit transceiver. They allow 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.

The A-port outputs, which are designed to source or sink up to 12 mA, include equivalent 30-

Ω series resistors

to reduce overshoot and undershoot.

disables the outputs, preventing damaging current backflow through the device when it is powered down. The

power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down,

which prevents driver conflict.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup

or pulldown resistors with the bus-hold circuitry is not recommended.

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information 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.

Copyright

 2002, 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.

SN54ALVTH162245 . . . WD PACKAGE

SN74ALVTH162245 . . . DGG, DGV, OR DL PACKAGE

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1DIR

1B1

1B2

GND

1B3

1B4

1B5

1B6

GND

1B7

1B8

2B1

2B2

GND

2B3

2B4

2B5

2B6

GND

2B7

2B8

2DIR

1OE

1A1

1A2

GND

1A3

1A4

1A5

1A6

GND

1A7

1A8

2A1

2A2

GND

2A3

2A4

2A5

2A6

GND

2A7

2A8

2OE