54ACT16543, 74ACT16543

16-BIT REGISTERED TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCAS126B – MARCH 1990 – REVISED APRIL 1996

1

POST OFFICE BOX 655303

Widebus

™ Family

PCB Layout

Configurations Minimize High-Speed

Switching Noise

CMOS) 1-

mm Process

125

°C

Shrink Small-Outline (DGG) and 300-mil

Shrink Small-Outline (DL) Packages 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

The ’ACT16543 are 16-bit registered transceivers

that contain two sets of D-type latches for

temporary storage of data flowing in either

direction. The ’ACT16543 can be used as two

8-bit transceivers or one 16-bit transceiver.

Separate latch enable (LEAB or LEBA) and

output-enable (OEAB or OEBA) inputs are

provided for each register to permit independent

control in either direction of data flow.

The A-to-B enable (CEAB) and OEAB inputs must

be low to enter data from A or to output data to B.

Having CEAB low and LEAB low makes the

A-to-B latches transparent; a subsequent low-to-

high transition at LEAB puts the A latches in the

storage mode. Data flow from B to A is similar, but

requires using the CEBA, LEBA, and OEBA

inputs.

The 74ACT16543 is packaged in TI’s shrink small-outline package, which provides twice the functionality of

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

The 54ACT16543 is characterized for operation over the full military temperature range of –55

°C to 125°C. The

74ACT16543 is characterized for operation from –40

°C to 85°C.

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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1OEAB

1LEAB

1CEAB

GND

1A1

1A2

1A3

1A4

1A5

GND

1A6

1A7

1A8

2A1

2A2

2A3

GND

2A4

2A5

2A6

2A7

2A8

GND

2CEAB

2LEAB

2OEAB

1OEBA

1LEBA

1CEBA

GND

1B1

1B2

1B3

1B4

1B5

GND

1B6

1B7

1B8

2B1

2B2

2B3

GND

2B4

2B5

2B6

2B7

2B8

GND

2CEBA

2LEBA

2OEBA

54ACT16543 . . . WD PACKAGE

74ACT16543 . . . DGG OR DL PACKAGE

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