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Dell Texas Instruments SN54BCT245, SN74BCT245 Octal Bus Transceivers with 3-State Outputs

Summary

These octal bus transceivers are essential components for engineers requiring reliable, high-speed asynchronous data transfer between multiple buses. Featuring advanced 3-state outputs and direction control logic, the SN54BCT245/SN74BCT245 ensures robust communication while providing isolation capabilities. This technical manual details comprehensive specifications, available small-outline packages, and operating parameters, including performance across wide military temperature ranges (–55°C to 125°C). It is designed for hardware developers integrating precise data bus management into digital circuitry designs.

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SN54BCT245, SN74BCT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994 State-of-the-Art Bi CMOS Design SN54BCT245 J OR W PACKAGE

SN74BCT245 DB, DW, OR N PACKAGE

Significantly Reduces ICCZ

(TOP VIEW)

ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015

DIR VCC

3-State Outputs Drive Bus Lines or Buffer

A1 OE

Memory Address Registers

Package Options Include Plastic A3 B2 Small-Outline (DW) and Shrink A4 B3 Small-Outline (DB) Packages, Ceramic Chip A5 B4 Carriers (FK) and Flatpacks (W), and A6 B5 Standard Plastic and Ceramic 300-mil DIPs A7 B6 (J, N) A8 B7

GND B8

description

These octal bus transceivers are designed for SN54BCT245 FK PACKAGE

(TOP VIEW)

asynchronous communication between data buses. The devices transmit data from the A bus to the B bus or from the B bus to the A bus depending upon the level at the direction-control (DIR) input. The output-enable (OE) input can be

used to disable the device so the buses are

effectively isolated.

A5 B3 The SN74BCT245 is available in TI’s shrink A6 B4 small-outline package (DB), which provides the A7 B5

same I/O pin count and functionality of standard small-outline packages in less than half the printed-circuit-board area. The SN54BCT245 is characterized for operation

over the full military temperature range of –55°C IR

to 125°C. The SN74BCT245 is characterized for operation from 0°C to 70°C.

FUNCTION TABLE INPUTS

OPERATION

OE DIR

B data to A bus A data to B bus Isolation

PRODUCTION DATA information is current as of publication date. Copyright  1994, Texas Instruments Incorporated

Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

2–1POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Page Summary Contents For Dell Texas Instruments SN54BCT245, SN74BCT245 Octal Bus Transceivers with 3-State Outputs

Page 1 SN54BCT245, SN74BCT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994 State-of-the-Art Bi CMOS Design SN54BCT245 J OR W PACKAGE SN74BCT245 DB, DW, OR N PACK...
Page 2 SN54BCT245, SN74BCT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994 logic symbol† logic diagram (positive logic) OE G3 DIR DIR 3EN1[BA] 3EN2[AB] OE To Sev...
Page 3 SN54BCT245, SN74BCT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994 recommended operating conditions SN54BCT245 SN74BCT245 MIN NOM MAX MIN NOM MAX VCC Sup...
Page 4 SN54BCT245, SN74BCT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994 switching characteristics (see Note 3) VCC = 5 V, VCC = 4.5 V to 5.5 V, CL = 50 p F, C...
Page 5 SN54BCT245, SN74BCT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994 TYPICAL CHARACTERISTICS† er is si at io er is si at io Figures 1 through 4 show the ty...
Page 6 SN54BCT245, SN74BCT245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994 2–6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Page 7 IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain...

Manual Details

Brand Texas Instruments
Pages 7
File Size 102.70 KB
Published July 10, 2026
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Frequently Asked Questions

What are the difference in operating temperature ranges between the SN54BCT245 and SN74BCT245?

The SN54BCT245 operates over a full military range of –55°C to 125°C. The SN74BCT245 is rated for 0°C to 70°C.

How can I temporarily disable the output lines on this transceiver?

You can use the output-enable (OE) input. Setting OE allows the buses to be effectively isolated.

What package options are available for these transceivers?

Options include standard DIPs, Small-Outline packages (DB), Ceramic Chip Carriers (FK), and Flatpacks (W).

Does the DB package offer advantages over other packages?

The SN74BCT245 in the shrink small-outline (DB) package maintains I/O pin count while requiring less than half the PCB area.