SN54LVT652, SN74LVT652

3.3V ABT OCTAL BUS TRANSCEIVERS AND REGISTERS

WITH 3STATE OUTPUTS

SCBS141E − MAY 1992 − REVISED JULY 1995

1

POST OFFICE BOX 655303

POST OFFICE BOX 1443

Technology (ABT) Design for 3.3-V

Operation and Low-Static Power

Dissipation

Down to 2.7 V

MIL-STD-883C, Method 3015; Exceeds

200 V Using Machine Model

(C = 200 pF, R = 0)

Per JEDEC Standard JESD-17

for External Pullup Resistors

Small-Outline (DW), Shrink Small-Outline

(DB), and Thin Shrink Small-Outline (PW)

Packages, Ceramic Chip Carriers (FK), and

Ceramic (JT) DIPs

description

These

bus

transceivers

and

registers

are

operation, but with the capability to provide a TTL

interface to a 5-V system environment.

The ’LVT652 consist of bus transceiver circuits,

D-type flip-flops, and control circuitry arranged for

multiplexed transmission of data directly from the

data bus or from the internal storage registers.

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. The circuitry used for

select control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between

real-time and stored data. A low input selects real-time data and a high input selects stored data. Figure 1

illustrates the four fundamental bus-management functions that can be performed with the

′LVT652.

Copyright

 1995, Texas Instruments Incorporated

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CLKAB

SAB

OEAB

A1

A2

A3

A4

A5

A6

A7

A8

GND

CLKBA

SBA

OEBA

B1

B2

B3

B4

B5

B6

B7

B8

SN54LVT652 ...JT PACKAGE

SN74LVT652 . . . DB, DW, OR PW PACKAGE

(TOP VIEW)

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OEBA

B1

B2

NC

B3

B4

B5

A1

A2

A3

NC

A4

A5

A6

4

15 16 17 18

SN54LVT652 . . . FK PACKAGE

(TOP VIEW)

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NC − No internal connection

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.