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74LVC2244A

Octal buffer/line driver with 30 Ω series termination resistors; 5 V input/output tolerant; 3-state

Philips Electronics 

Philips Semiconductors

Octal buffer/line driver with 30 Ω series termination

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

Product specification

74LVC2244A

AC CHARACTERISTICS

Ground = 0 V; tr = tf ≤ 2.5 ns.

SYMBOL

PARAMETER

WAVEFORMS

tPHL/tPLH

tPZH/tPZL

tPHZ/tPLZ

propagation delay

1An to 1Yn; 2An to 2Yn

3-state output enable time

1OE to 1Yn; 2OE to 2Yn

3-state output disable time

1OE to 1Yn; 2OE to 2Yn

see Figs 4 and 6

see Figs 5 and 6

see Figs 5 and 6

Note

1. Typical values at VCC = 3.3 V and Tamb = 25 °C.

VCC = 3.3 ±0.3 V

VCC = 2.7 V

UNIT

MIN. TYP.(1) MAX. MIN. MAX.

1.5 4.0

6.5 1.5 7.5 ns

1.5 4.4

8.1 1.5 9.1 ns

1.5 3.8

5.4 1.5 6.4 ns

AC WAVEFORMS

handbook, halfpage VI

1An, 2An

input

GND

VOH

1Yn, 2Yn

output

VOL

tPHL

VM

VM

tPLH

MNA361

VM = 1.5 V at VCC ≥ 2.7 V;

VM = 0.5 VCC at VCC < 2.7 V;

VOL and VOH are typical output voltage drop that occur with the output load.

Fig.4 The input nAn to output nYn propagation delays.

1999 Sep 30

7

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