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Features
- 2-V to 5.5-V VCCOperation
- Max tpdof 6.5 ns at 5 V
- Typical VOLP(Output Ground Bounce)
<0.8 V at VCC= 3.3 V, TA= 25°C - Typical VOHV(Output VOHUndershoot)
>2.3 V at VCC= 3.3 V, TA= 25°C - Supports Mixed-Mode Voltage Operation on All Ports
- IoffSupports Partial-Power-Down Mode Operation
- Latch-Up Performance Exceeds 250 mA Per JESD 17
- ESD Protection Exceeds JESD 22
- 2000-V Human-Body Model (A114-A)
- 200-V Machine Model (A115-A)
- 1000-V Charged-Device Model (C101)
Description
These octal bus transceivers are designed for 2-V to 5.5-V VCCoperation.
The ’LV245A devices are 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.
These devices are fully specified for partial-power-down applications using Ioff. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down.
