Texas Instruments SN54ABT16543, SN74ABT16543 - 16-BIT REGISTERED TRANCEIVERS WITH 3-STATE OUTPUTS Technical Manual Data Sheet User Guide

查询5962-9324101MXA供应商 SN54ABT16543, SN74ABT16543

16-BIT REGISTERED TRANSCEIVERS

WITH 3-STATE OUTPUTS SCBS087C – FEBRUARY 1991 – REVISED JANUARY 1997

Members of the Texas Instruments SN54ABT16543 WD PACKAGE SN74ABT16543 DGG OR DL PACKAGE

Widebus Family

(TOP VIEW)

State-of-the-Art EPIC-ΙΙB Bi CMOS Design Significantly Reduces Power Dissipation

1OEAB 1OEBA

Latch-Up Performance Exceeds 500 m A Per 1LEAB 1LEBA JEDEC Standard JESD-17 1CEAB 1CEBA

GND GND

Typical VOLP (Output Ground Bounce) < 1 V

at VCC = 5 V, TA = 25°C 1A1 1B1 1A2 1B2

Distributed VCC and GND Pin Configuration

VCC VCC

Minimizes High-Speed Switching Noise

Flow-Through Architecture Optimizes PCB

Layout

High-Drive Outputs (–32-m A IOH, 64-m A IOL) GND GND

Package Options Include Plastic 300-mil 1A6 1B6 Shrink Small-Outline (DL) and Thin Shrink 1A7 1B7 Small-Outline (DGG) Packages and 380-mil 1A8 1B8 Fine-Pitch Ceramic Flat (WD) Package 2A1 2B1 Using 25-mil Center-to-Center Spacings 2A2 2B2 2A3 2B3

description GND GND

The ’ABT16543 16-bit registered transceivers

contain two sets of D-type latches for temporary

storage of data flowing in either direction. The

VCC VCC

’ABT16543 can be used as two 8-bit transceivers

or one 16-bit transceiver. Separate latch-enable

(LEAB or LEBA) and output-enable (OEAB or

GND GND

OEBA) inputs are provided for each register to

2CEAB 2CEBA

permit independent control in either direction of

2LEAB 2LEBA

data flow.

2OEAB 2OEBA

The A-to-B enable (CEAB) input must be low to enter data from A or to output data from B. If CEAB is low and LEAB is low, the A-to-B latches are transparent; a subsequent low-to-high transition of LEAB puts the A latches in the storage mode. With CEAB and OEAB both low, the 3-state B outputs are active and reflect the data present at the output of the A latches. Data flow from B to A is similar but requires using the CEBA, LEBA, and OEBA inputs. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The SN54ABT16543 is characterized for operation over the full military temperature range of –55°C to 125°C. The SN74ABT16543 is characterized for operation from –40°C to 85°C.

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.

Widebus and EPIC-ΙΙB are trademarks of Texas Instruments Incorporated.

Copyright  1997, Texas Instruments Incorporated PRODUCTION DATA information is 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.

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