Datasheet

December 1990 3

Philips Semiconductors Product speciﬁcation

Quad buffer/line driver; 3-state 74HC/HCT126

PIN DESCRIPTION

PIN NO. SYMBOL NAME AND FUNCTION

1, 4, 10, 13 1OE to 4OE output enable inputs (active HIGH)

2, 5, 9, 12 1A to 4A data inputs

3, 6, 8, 11 1Y to 4Y data outputs

7 GND ground (0 V)

14 V

positive supply voltage

Fig.1 Pin configuration. Fig.2 Logic symbol. Fig.3 IEC logic symbol.

(a)

(b)

Fig.4 Functional diagram.

Fig.5 Logic diagram (one buffer).

FUNCTION TABLE

Note

1. H = HIGH voltage level

L = LOW voltage level

X = don’t care

Z = high impedance OFF-state

INPUTS OUTPUT

nOE nA nY