Quadruple Bus Transceivers


Product details


Technology Family LS VCC (Min) (V) 4.5 VCC (Max) (V) 5.5 Bits (#) 4 Voltage (Nom) (V) 5 F @ nom voltage (Max) (MHz) 35 ICC @ nom voltage (Max) (mA) 0.05 tpd @ nom Voltage (Max) (ns) 18 IOL (Max) (mA) 24 IOH (Max) (mA) -15 Rating Military Operating temperature range (C) -55 to 125 open-in-new Find other Standard transceiver

Package | Pins | Size

CDIP (J) 14 - CFP (W) 14 - open-in-new Find other Standard transceiver


  • Two-Way Asynchronous Communication Between Data Buses
  • PNP Inputs Reduce D-C Loading
  • Hysteresis (Typically 400 mV) at Inputs Improves Noise Margin

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These four-data-line transceivers are designed for asynchronous two-way communications between data buses. SN74LS243 can be used to drive terminated lines down to 133 .

SN54LS243 is characterized for operation over the full military temperature range of –55°C to 125°C. SN74LS243 is characterized for operation from 0°C to 70°C.

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Technical documentation

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Type Title Date
* Datasheet Quadruple Bus Transceivers datasheet (Rev. A) Jul. 09, 2008
Selection guides Logic Guide (Rev. AB) Jun. 12, 2017
SMD SN54LS243 SMD 8002002CA Jun. 21, 2016
Application notes Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) Dec. 02, 2015
Solution guides LOGIC Pocket Data Book (Rev. B) Jan. 16, 2007
Application notes Semiconductor Packing Material Electrostatic Discharge (ESD) Protection Jul. 08, 2004
More literature Logic Cross-Reference (Rev. A) Oct. 07, 2003
Application notes TI IBIS File Creation, Validation, and Distribution Processes Aug. 29, 2002
Application notes Designing With Logic (Rev. C) Jun. 01, 1997
Application notes Designing with the SN54/74LS123 (Rev. A) Mar. 01, 1997
Application notes Input and Output Characteristics of Digital Integrated Circuits Oct. 01, 1996
Application notes Live Insertion Oct. 01, 1996

Design & development

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CAD/CAE symbols

Package Pins Download
CDIP (J) 14 View options
CFP (W) 14 View options

Ordering & quality

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Anatomy of a logic part number

Logic part numbers use a formulaic naming system to denote the device's functionality and features. This video reviews the components to a logic part's name.

Posted: 22-Jan-2018
Duration: 01:26

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