Datasheet

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SN54ABT640, SN74ABT640

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS104C – FEBRUARY 1991 – REVISED JANUARY 1997

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

State-of-the-Art

EPIC-

ΙΙ

 BiCMOS Design

Significantly Reduces Power Dissipation

ESD Protection Exceeds 2000 V Per

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

Latch-Up Performance Exceeds 500 mA Per

JEDEC Standard JESD-17

Typical V

OLP

(Output Ground Bounce) < 1 V

at V

= 5 V, T

= 25°C

High-Drive Outputs (–32-mA I

64-mA I

)

Package Options Include Plastic

Small-Outline (DW), Shrink Small-Outline

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

Packages, Ceramic Chip Carriers (FK), and

Plastic (N) and Ceramic (J) DIPs

description

The ’ABT640 bus transceivers are designed for

asynchronous communication between data

buses. These devices transmit inverted data from

the A bus to the B bus or from the B bus to the

A bus, depending on the level at the direction-

control (DIR) input. The output-enable (OE

) input

can be used to disable the device so that the

buses are effectively isolated.

To ensure the high-impedance state during power

up or power down, OE

should be tied to V

through a pullup resistor; the minimum value of

the resistor is determined by the current-sinking

capability of the driver.

The SN54ABT640 is characterized for operation over the full military temperature range of –55°C to 125°C. The

SN74ABT640 is characterized for operation from –40°C to 85°C.

FUNCTION TABLE

INPUTS

OPERATION

OE DIR

OPERATION

L L B data to A bus

L HA data to B bus

H X Isolation

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-ΙΙB is a trademark of Texas Instruments Incorporated.

DIR

GND

SN54ABT640 ...J PACKAGE

SN74ABT640 . . . DB, DW, N, OR PW PACKAGE

(TOP VIEW)

3212019

910111213

SN54ABT640 . . . FK PACKAGE

(TOP VIEW)

DIR

B6 OE

GND

Summary of content (10 pages)

PAGE 1
SN54ABT640, SN74ABT640 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS104C – FEBRUARY 1991 – REVISED JANUARY 1997 D D D D SN54ABT640 . . . J PACKAGE SN74ABT640 . . . DB, DW, N, OR PW PACKAGE (TOP VIEW) DIR A1 A2 A3 A4 A5 A6 A7 A8 GND 1 20 2 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC OE B1 B2 B3 B4 B5 B6 B7 B8 SN54ABT640 . . . FK PACKAGE (TOP VIEW) description The ’ABT640 bus transceivers are designed for asynchronous communication between data buses.
PAGE 2
SN54ABT640, SN74ABT640 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS104C – FEBRUARY 1991 – REVISED JANUARY 1997 logic symbol† OE DIR A1 19 1 2 G3 3 EN1 [BA] 3 EN2 [AB] 1 1 A2 A3 A4 A5 A6 A7 A8 3 18 1 2 B1 17 4 16 5 15 6 14 7 13 8 12 9 11 B2 B3 B4 B5 B6 B7 B8 † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
PAGE 3
SN54ABT640, SN74ABT640 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS104C – FEBRUARY 1991 – REVISED JANUARY 1997 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.
PAGE 4
SN54ABT640, SN74ABT640 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS104C – FEBRUARY 1991 – REVISED JANUARY 1997 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER VIK VOH TEST CONDITIONS VCC = 4.5 V, VCC = 4.5 V, II = –18 mA IOH = –3 mA VCC = 5 V, VCC = 4 4.5 5V VOL VCC = 4 4.5 5V MIN MIN –1.2 MAX SN74ABT640 MIN –1.2 MAX –1.2 2.5 2.
PAGE 5
SN54ABT640, SN74ABT640 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS104C – FEBRUARY 1991 – REVISED JANUARY 1997 PARAMETER MEASUREMENT INFORMATION 7V S1 500 Ω From Output Under Test Open GND CL = 50 pF (see Note A) 500 Ω TEST S1 tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 7V Open LOAD CIRCUIT 3V Timing Input 1.5 V 0V tw tsu 3V Input 1.5 V th 3V 1.5 V Data Input 1.5 V 1.5 V 0V 0V VOLTAGE WAVEFORMS PULSE DURATION VOLTAGE WAVEFORMS SETUP AND HOLD TIMES 3V 1.5 V Input 0V 1.5 V 1.
PAGE 6
PACKAGE OPTION ADDENDUM www.ti.
PAGE 7
PACKAGE OPTION ADDENDUM www.ti.
PAGE 8
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SN74ABT640DBR SSOP DB 20 2000 330.0 16.4 8.2 7.5 2.5 12.0 16.0 Q1 SN74ABT640DWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1 SN74ABT640NSR SO NS 20 2000 330.0 24.4 8.2 13.0 2.5 12.0 24.
PAGE 9
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74ABT640DBR SN74ABT640DWR SSOP DB 20 2000 367.0 367.0 38.0 SOIC DW 20 2000 367.0 367.0 45.0 SN74ABT640NSR SO NS 20 2000 367.0 367.0 45.0 SN74ABT640PWR TSSOP PW 20 2000 367.0 367.0 38.
PAGE 10
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