1FEATURES

· Qualified for Automotive Applications

· ESD Protection Exceeds 2000 V Per

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

· Operates From 2 V to 3.6 V

· Inputs Accept Voltages to 5.5 V

· Max tpd of 5.3 ns at 3.3 V

· Typical VOLP (Output Ground Bounce) < 0.8 V

at VCC = 3.3 V, TA = 25°C

· Typical VOHV (Output VOH Undershoot) > 2 V

at VCC = 3.3 V, TA = 25°C

· Supports Mixed-Mode Signal Operation on All

Ports (5-V Input/Output Voltage With 3.3-V VCC)

· Ioff Supports Partial-Power-Down Mode

Operation

DESCRIPTION/ORDERING INFORMATION

The SN74LVC540A octal buffer/driver is designed for 2.7-V to 3.6-V VCC operation.

This device is ideal for driving bus lines or buffer-memory address registers. This device features inputs and

outputs on opposite sides of the package that facilitate printed circuit board layout.

The 3-state control gate is a 2-input AND gate with active-low inputs so that, if either output-enable (OE1 or OE2)

input is high, all outputs are in the high-impedance state.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in

a mixed 3.3-V/5-V system environment.

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.

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.