Catalog
Octal Bus Transceiver with 3-State Outputs
Key Features
• Optimized for 1.8-V Operation and Is 3.6-V I/O Tolerant to Support Mixed-Mode Signal OperationIoffSupports Partial-Power-Down Mode OperationSub 1-V OperableMax tpdof 1.7 ns at 1.8 VLow Power Consumption, 20-µA Max ICC±8-mA Output Drive at 1.8 VLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD 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 OperationIoffSupports Partial-Power-Down Mode OperationSub 1-V OperableMax tpdof 1.7 ns at 1.8 VLow Power Consumption, 20-µA Max ICC±8-mA Output Drive at 1.8 VLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 22- 2000-V Human-Body Model (A114-A)- 200-V Machine Model (A115-A)- 1000-V Charged-Device Model (C101)
Description
AI
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 VCCoperation.
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 VCCthrough 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 Ioffcircuitry 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 VCCoperation.
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 VCCthrough 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 Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
