1 Features

? 2 V to 5.5 V VCC operation

? Supports mixed-mode voltage operation on all

ports

? Ioff supports partial-power-down mode operation

? Latch-up performance exceeds 250 mA

per JESD 17

? Operating ambient temperature: -55°C to +125°C

? Supports defense, aerospace, and medical

applications:

– Controlled baseline

– One assembly and test site

– One fabrication site

– Extended product life cycle

– Product traceability

2 Applications

? Enable or disable a digital signal

? Eliminate slow or noisy input signals

? Hold a signal during controller reset

? Debounce a switch

3 Description

The SN74LV244B-EP octal buffers and line drivers

are designed for 2 V to 5.5 V VCC operation.

The device is configured into two banks of four

drivers, each controlled by its own output enable

pin. This device is fully specified for partial-powerdown

applications using Ioff. The Ioff circuitry disables

the outputs, preventing damaging current backflow

through the devices when they are powered down.