SCAS339S March 1994 – February 2017 SN74LVC126A
The SN74LVC126A quadruple buffer is designed for 1.65-V to 3.6-V VCC operation and features tri-state outputs.
The SN74LVC126A devices perform the Boolean function Y = A in positive logic.
Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as down-translators in a mixed 3.3-V or 5-V system environment.
The SN74LVC126A device features four independent buffers with 3-state outputs, and is designed to operate from a VCC of 1.65 V to 3.6 V. When the output enable (OE) input is low, the corresponding output is disabled and enters a high-impedance state. This device also features high-tolerance inputs, allowing for voltage translation in mixed voltage systems. Wide operating temperature range enables this device to be used in any application, including rugged or extreme environments.
The SN74LVC126A's 3-state outputs allow the outputs to be disabled using the output enable (OE) pin. To ensure the high-impedance state during power up and power down, OE must be tied to GND through a pulldown resistor. The minimum value of the resistor is determined by the current-sourcing capability of the driver.