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SN74AUC245

ACTIVE

Octal Bus Transceiver with 3-State Outputs

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Data sheet

SN74AUC245

ACTIVE
Order now

Product details

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
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 mm × 3.5 mm)
  • 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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* Data sheet SN74AUC245 datasheet (Rev. A) Jul 1, 2004
Application note Designing With TI Ultra-Low-Voltage CMOS (AUC) Octals and Widebus Devices Mar 21, 2003

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.

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Simulation model

SN74AUC245 IBIS Model (Rev. B)

SCEM314A (389 KB) - IBIS model
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VQFN (RGY) 20 Ultra Librarian
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