Datasheet

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SN54ABT623A, SN74ABT623

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS114D – FEBRUARY 1991 – REVISED MAY 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),

Ceramic Flat (W) Package, and Plastic (N)

and Ceramic (JT) DIPs

description

The SN54ABT623A and SN74ABT623 bus

transceivers are designed for asynchronous

communication between data buses. The

control-function implementation allows for

maximum flexibility in timing. The SN54ABT623A

and SN74ABT623 provide true data at their

outputs.

These devices allow data transmission from the

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

depending on the logic levels at the output-enable

(OEAB and OEBA

) inputs.

The output-enable inputs can be used to disable the device so that the buses are effectively isolated. The

dual-enable configuration gives the transceivers the capability of storing data by simultaneously enabling OEAB

and OEBA. Each output reinforces its input in this configuration. When both OEAB and OEBA are enabled and

all other data sources to the two sets of bus lines are at high impedance, both sets of bus lines (16 total) remain

at their last states.

To ensure the high-impedance state during power up or power down, OEBA 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.

OEAB should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by

the current-sourcing capability of the driver.

The SN54ABT623A is characterized for operation over the full military temperature range of –55°C to 125°C.

The SN74ABT623 is characterized for operation from –40°C to 85°C.

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.

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.

SN54ABT623A . . . JT OR W PACKAGE

SN74ABT623 . . . DB, DW, N, OR PW PACKAGE

(TOP VIEW)

SN54ABT623A . . . FK PACKAGE

(TOP VIEW)

OEAB

GND

OEBA

3212019

910111213

OEAB

OEBA

GND

Summary of content (20 pages)

PAGE 1
SN54ABT623A, SN74ABT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS114D – FEBRUARY 1991 – REVISED MAY 1997 D D D D SN54ABT623A . . . JT OR W PACKAGE SN74ABT623 . . . DB, DW, N, OR PW PACKAGE (TOP VIEW) OEAB 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 SN54ABT623A . . .
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SN54ABT623A, SN74ABT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS114D – FEBRUARY 1991 – REVISED MAY 1997 FUNCTION TABLE INPUTS OPERATION OEBA OEAB L L B data to A bus L H B data to A bus, A data to B bus H L Isolation H H A data to B bus logic symbol† 19 OEBA 1 OEAB 2 A1 EN1 EN2 1 1 3 A2 A3 A4 A5 A6 A7 A8 18 1 2 17 4 16 5 15 6 14 7 13 8 12 9 11 B1 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
SN54ABT623A, SN74ABT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS114D – FEBRUARY 1991 – REVISED MAY 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 (except I/O ports) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.
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SN54ABT623A, SN74ABT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS114D – FEBRUARY 1991 – REVISED MAY 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 SN54ABT623A MIN –1.2 MAX MIN –1.2 2.5 IOH = –3 mA IOH = –24 mA 3 3 3 2 2 IOH = –32 mA IOL = 48 mA 2* IOL = 64 mA 0.55 0.55* 0.
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SN54ABT623A, SN74ABT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS114D – FEBRUARY 1991 – REVISED MAY 1997 switching characteristics over recommended ranges of supply voltage and operating free-air temperature, CL = 50 pF (unless otherwise noted) (see Figure 1) FROM (INPUT) TO (OUTPUT) tPLH tPHL A or B B or A tPZH tPZL OEBA A tPHZ tPLZ OEBA A tPZH tPZL OEAB B tPHZ tPLZ OEAB B PARAMETER POST OFFICE BOX 655303 VCC = 5 V, TA = 25°C SN54ABT623A SN74ABT623 MIN TYP MAX MIN MAX MIN
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SN54ABT623A, SN74ABT623 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS114D – FEBRUARY 1991 – REVISED MAY 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 1.5 V th 3V 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 1.5 V 0V VOH 1.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 25-Sep-2013 (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
PAGE 10
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74ABT623DBR 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 SSOP DB 20 2000 330.0 16.4 8.2 7.5 2.5 12.0 16.0 Q1 SN74ABT623DWR SOIC DW 20 2000 330.0 24.4 10.8 13.0 2.7 12.0 24.0 Q1 SN74ABT623PWR TSSOP PW 20 2000 330.0 16.4 6.95 7.1 1.6 8.0 16.
PAGE 11
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) SN74ABT623DBR SSOP DB 20 2000 367.0 367.0 38.0 SN74ABT623DWR SOIC DW 20 2000 367.0 367.0 45.0 SN74ABT623PWR TSSOP PW 20 2000 367.0 367.0 38.
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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.