1999 Sep 30

2

Philips Semiconductors

Product specification

Octal buffer/line driver with 30

Ω series termination

resistors; 5 V input/output tolerant; 3-state

74LVC2244A

FEATURES

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

• Wide supply voltage range of 1.2 to 3.6 V

• CMOS low power consumption

• Direct interface with TTL levels

• Integrated 30 Ω termination resistors.

DESCRIPTION

The 74LVC2244A is a high-performance, low-power,

low-voltage, Si-gate CMOS device, superior to most

advanced CMOS compatible TTL families.

Inputs can be driven from either 3.3 or 5 V devices. In

3-state operation, outputs can handle 5 V. These features

allow the use of these devices as translators in a mixed

3.3/5 V environment.

The 74LVC2244A 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. The 74LVC2244A is designed with 30

Ω

series termination resistors in both HIGH and LOW output

stages to reduce line noise.

QUICK REFERENCE DATA

Note

SYMBOL

PARAMETER

CONDITIONS

TYPICAL

UNIT

4.0

ns

input capacitance

5.0

pF

power dissipation capacitance per buffer

25

pF