74LVC244A; 74LVCH244A

Octal buffer/line driver; 3-state

Rev. 11 — 29 April 2021

Product data sheet

1. General description

The 74LVC244A; 74LVCH244A is an octal non-inverting buffer/line driver with 3-state outputs.

The 3-state outputs are controlled by the output enable inputs 1OE and 2OE. A HIGH on nOE

causes the outputs to assume a high-impedance OFF-state. Schmitt-trigger action at all inputs

makes the circuit highly tolerant for slower input rise and fall times.

Inputs can be driven from either 3.3 V or 5.0 V devices. In 3-state operation, outputs can handle

5 V. These features allow the use of these devices as translators in a mixed 3.3 V and 5 V

environment.

The 74LVCH244A bus hold on data inputs eliminates the need for external pull-up resistors to hold

unused inputs.

2. Features and benefits

• 5 V tolerant inputs/outputs for interfacing with 5 V logic

• Wide supply voltage range from 1.2 V to 3.6 V

• CMOS low-power consumption

• Direct interface with TTL levels

• Inputs accept voltages up to 5.5 V

• High-impedance when VCC = 0 V

• Bus hold on all data inputs (74LVCH244A only)

• Complies with JEDEC standard:

• JESD8-7A (1.65 V to 1.95 V)

• JESD8-5A (2.3 V to 2.7 V)

• JESD8-C/JESD36 (2.7 V to 3.6 V)

• ESD protection:

• HBM JESD22-A114F exceeds 2000 V

• MM JESD22-A115B exceeds 200 V

• CDM JESD22-C101E exceeds 1000 V

• Specified from -40 °C to +85 °C and -40 °C to +125 °C