54ACT16540, 74ACT16540

16-BIT BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCAS186A − OCTOBER 1991 − REVISED APRIL 1996

1

POST OFFICE BOX 655303

Widebus

™ Family

Wider Address/Data Paths

Memory Address Registers

Layout

Minimizes High-Speed Switching Noise

CMOS) 1-

μm Process

125

°C

Small-Outline 300-mil (DL) Package Using

25-mil Center-to-Center Pin Spacings and

380-mil Fine-Pitch Ceramic Flat (WD)

Packages Using 25-mil Center-to-Center

Pin Spacings

description

These 16-bit buffers/bus drivers provide a

high-performance bus interface for wide data

paths.

The 3-state control gate is a 2-input AND gate with

active-low inputs so that if either output-enable

(OE1 or OE2) input is high, all corresponding

outputs are in the high-impedance state.

The 74ACT16540 is packaged in TI’s shrink small-outline package, which provides twice the I/O pin count and

functionality of standard small-outline packages in the same printed-circuit-board area.

The 54ACT16540 is characterized for operation over the full military temperature range of −55

°C to 125°C. The

74ACT16540 is characterized for operation from −40

°C to 85°C.

FUNCTION TABLE

(each 8-bit section)

INPUTS

OUTPUT

OE1

OE2

A

OUTPUT

Y

L

L

L

H

L

LH

L

H

XX

Z

X

H

X

Z

Copyright

© 1996, Texas Instruments Incorporated

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.

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.

EPIC and Widebus are trademarks of Texas Instruments Incorporated.

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24

48

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40

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32

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28

27

26

25

1OE1

1Y1

1Y2

GND

1Y3

1Y4

1Y5

1Y6

GND

1Y7

1Y8

2Y1

2Y2

GND

2Y3

2Y4

2Y5

2Y6

GND

2Y7

2Y8

2OE1

1OE2

1A1

1A2

GND

1A3

1A4

1A5

1A6

GND

1A7

1A8

2A1

2A2

GND

2A3

2A4

2A5

2A6

GND

2A7

2A8

2OE2

54ACT16540 . . . WD PACKAGE

74ACT16540 . . . DL PACKAGE

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