Product details

Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 8 IOL (max) (mA) 12 IOH (max) (mA) -12 Input type TTL Output type TTL Features Balanced outputs, High speed (tpd 10-50ns) Technology family LS Rating Military Operating temperature range (°C) -55 to 125
Supply voltage (min) (V) 4.5 Supply voltage (max) (V) 5.5 Number of channels 8 IOL (max) (mA) 12 IOH (max) (mA) -12 Input type TTL Output type TTL Features Balanced outputs, High speed (tpd 10-50ns) Technology family LS Rating Military Operating temperature range (°C) -55 to 125
CDIP (J) 20 167.464 mm² 24.2 x 6.92 CFP (W) 20 90.5828 mm² 13.09 x 6.92 LCCC (FK) 20 79.0321 mm² 8.89 x 8.89
  • 3-State Outputs Drive Bus Lines Directly
  • PNP Inputs Reduce DC Loading on Bus Lines
  • Hysteresis at Bus Inputs Improves Noise Margins
  • Typical Propagation Delay Times Port to Port, 8 ns
  • 3-State Outputs Drive Bus Lines Directly
  • PNP Inputs Reduce DC Loading on Bus Lines
  • Hysteresis at Bus Inputs Improves Noise Margins
  • Typical Propagation Delay Times Port to Port, 8 ns

These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements.

The SNx4LS245 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 level at the direction-control (DIR) input. The output-enable (OE) input can disable the device so that the buses are effectively isolated.

These octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements.

The SNx4LS245 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 level at the direction-control (DIR) input. The output-enable (OE) input can disable the device so that the buses are effectively isolated.

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Technical documentation

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Type Title Date
* Data sheet SNx4LS245 Octal Bus Transceivers With 3-State Outputs datasheet (Rev. B) PDF | HTML 28 Sep 2016
* SMD SN54LS245 SMD 80021012A 21 Jun 2016
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dec 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note Designing with the SN54/74LS123 (Rev. A) 01 Mar 1997
Application note Input and Output Characteristics of Digital Integrated Circuits 01 Oct 1996
Application note Live Insertion 01 Oct 1996

Design & development

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Package Pins CAD symbols, footprints & 3D models
CDIP (J) 20 Ultra Librarian
CFP (W) 20 Ultra Librarian
LCCC (FK) 20 Ultra Librarian

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