54ACT16475, 74ACT16475

18BIT REGISTERED TRANSCEIVERS

WITH 3STATE OUTPUTS

SCAS198A − OCTOBER 1990 − REVISED APRIL 1996

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POST OFFICE BOX 655303

POST OFFICE BOX 1443

Widebus

 Family

PCB Layout

Minimizes High-Speed Switching Noise

CMOS) 1-

µm Process

125

°C

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 ’ACT16475 are 18-bit registered transceivers

that contain two sets of D-type flip-flops for

temporary storage of data flowing in either

direction. They can be used as two 9-bit

transceivers or one 18-bit transceiver. Separate

clock (CLKAB and CLKBA) and output-enable

(OEAB or OEBA) inputs are provided for each

register to permit independent control in either

direction of data flow.

Data at the A inputs meeting the setup time

requirements is transferred to the B outputs on the

positive-going edge of CLKAB. With OEAB low,

the 3-state B outputs are enabled and reflect the

inverted A data. Data flow from B to A is similar but

requires the use of the CLKBA and OEBA inputs.

The 74ACT16475 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 54ACT16475 is characterized for operation over the full military temperature range of −55

°C to 125°C. The

74ACT16475 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

1CLKAB

1A1

GND

1A2

1A3

1A4

1A5

1A6

GND

1A7

1A8

1A9

2A1

2A2

2A3

GND

2A4

2A5

2A6

2A7

2A8

GND

2A9

2CLKAB

2OEAB

1OEBA

1CLKBA

1B1

GND

1B2

1B3

1B4

1B5

1B6

GND

1B7

1B8

1B9

2B1

2B2

2B3

GND

2B4

2B5

2B6

2B7

2B8

GND

2B9

2CLKBA

2OEBA

54ACT16475 . . . WD PACKAGE

74ACT16475 . . . DL PACKAGE

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