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SN74AUC245

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Octal Bus Transceiver with 3-State Outputs

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Data sheet

SN74AUC245

ACTIVE
Data sheet Order now

Product details

Supply voltage (min) (V) 0.8 Supply voltage (max) (V) 2.7 Number of channels 8 IOL (max) (mA) 9 IOH (max) (mA) -9 Input type CMOS Output type CMOS Features Balanced outputs, Over-voltage tolerant inputs, Partial power down (Ioff), Ultra high speed (tpd <5ns) Technology family AUC Rating Catalog Operating temperature range (°C) -40 to 85
Supply voltage (min) (V) 0.8 Supply voltage (max) (V) 2.7 Number of channels 8 IOL (max) (mA) 9 IOH (max) (mA) -9 Input type CMOS Output type CMOS Features Balanced outputs, Over-voltage tolerant inputs, Partial power down (Ioff), Ultra high speed (tpd <5ns) Technology family AUC Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGY) 20 15.75 mm² 4.5 x 3.5
  • Optimized for 1.8-V Operation and Is 3.6-V I/O Tolerant to Support Mixed-Mode Signal Operation
  • Ioff Supports Partial-Power-Down Mode Operation
  • Sub 1-V Operable
  • Max tpd of 1.7 ns at 1.8 V
  • Low Power Consumption, 20-µA Max ICC
  • ±8-mA Output Drive at 1.8 V
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    - 2000-V Human-Body Model (A114-A)
    - 200-V Machine Model (A115-A)
    - 1000-V Charged-Device Model (C101)
  • Optimized for 1.8-V Operation and Is 3.6-V I/O Tolerant to Support Mixed-Mode Signal Operation
  • Ioff Supports Partial-Power-Down Mode Operation
  • Sub 1-V Operable
  • Max tpd of 1.7 ns at 1.8 V
  • Low Power Consumption, 20-µA Max ICC
  • ±8-mA Output Drive at 1.8 V
  • Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
  • ESD Protection Exceeds JESD 22
    - 2000-V Human-Body Model (A114-A)
    - 200-V Machine Model (A115-A)
    - 1000-V Charged-Device Model (C101)

This octal bus transceiver is operational at 0.8-V to 2.7-V VCC, but is designed specifically for 1.65-V to 1.95-V VCC operation.

The SN74AUC245 is designed for asynchronous communication between data buses. The device transmits data 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 be used to disable the device so the buses are effectively isolated.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

This octal bus transceiver is operational at 0.8-V to 2.7-V VCC, but is designed specifically for 1.65-V to 1.95-V VCC operation.

The SN74AUC245 is designed for asynchronous communication between data buses. The device transmits data 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 be used to disable the device so the buses are effectively isolated.

To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
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Technical documentation

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Type Title Date
* Data sheet SN74AUC245 datasheet (Rev. A) 01 Jul 2004
Selection guide Little Logic Guide 2018 (Rev. G) 06 Jul 2018
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note How to Select Little Logic (Rev. A) 26 Jul 2016
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
Product overview Design Summary for WCSP Little Logic (Rev. B) 04 Nov 2004
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note Selecting the Right Level Translation Solution (Rev. A) 22 Jun 2004
User guide Signal Switch Data Book (Rev. A) 14 Nov 2003
Application note Designing With TI Ultra-Low-Voltage CMOS (AUC) Octals and Widebus Devices 21 Mar 2003
User guide AUC Data Book, January 2003 (Rev. A) 01 Jan 2003
Application note Texas Instruments Little Logic Application Report 01 Nov 2002
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
More literature Standard Linear & Logic for PCs, Servers & Motherboards 13 Jun 2002
More literature STANDARD LINEAR AND LOGIC FOR DVD/VCD PLAYERS 27 Mar 2002
More literature AUC Product Brochure (Rev. A) 18 Mar 2002

Design & development

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Evaluation board

14-24-NL-LOGIC-EVM — Logic product generic evaluation module for 14-pin to 24-pin non-leaded packages

14-24-NL-LOGIC-EVM is a flexible evaluation module (EVM) designed to support any logic or translation device that has a 14-pin to 24-pin BQA, BQB, RGY, RSV, RJW or RHL package.

User guide: PDF | HTML
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Simulation model

SN74AUC245 IBIS Model (Rev. B)

SCEM314B.ZIP (68 KB) - IBIS Model
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VQFN (RGY) 20 Ultra Librarian
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