54ACT16652, 74ACT16652

16-BIT TRANSCEIVERS AND REGISTERS

WITH 3-STATE OUTPUTS

SCAS128C – MARCH 1990 – REVISED APRIL 1996

1

POST OFFICE BOX 655303

Widebus

™ Family

and B Buses

PCB Layout

Minimizes High-Speed Switching Noise

CMOS) 1-

µm Process

125

°C

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

Spacings

description

The ’ACT16652 are 16-bit bus transceivers

consisting of D-type flip-flops and control circuitry

arranged for multiplexed transmission of data

directly from the data bus or from the internal

storage registers. The devices can be used as two

8-bit transceivers or one 16-bit transceiver.

Complementary

output-enable

(OEAB

and

OEBA) inputs are provided to control the

transceiver functions. Select-control (SAB and

SBA) inputs are provided to select whether

real-time or stored data is transferred. A low input

level selects real-time data, and a high input level

selects stored data. The circuitry used for select

control eliminates the typical decoding glitch that

occurs in a multiplexer during the transition

between stored and real-time data. Figure 1

illustrates the four fundamental bus-management

functions that can be performed with the

’ACT16652.

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

1CLKAB

1SAB

GND

1A1

1A2

1A3

1A4

1A5

GND

1A6

1A7

1A8

2A1

2A2

2A3

GND

2A4

2A5

2A6

2A7

2A8

GND

2SAB

2CLKAB

2OEAB

1OEBA

1CLKBA

1SBA

GND

1B1

1B2

1B3

1B4

1B5

GND

1B6

1B7

1B8

2B1

2B2

2B3

GND

2B4

2B5

2B6

2B7

2B8

GND

2SBA

2CLKBA

2OEBA

54ACT16652 . . . WD PACAGE

74ACT16652 . . . DL PACKAGE

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