HEF4001UB 데이터 시트보기 (PDF) - Philips Electronics

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HEF4001UB

Quadruple 2-input NOR gate

Philips Electronics 

Philips Semiconductors

Quadruple 2-input NOR gate

Product specification

HEF4001UB

gates

INH

O

HL

L OSC

Fig.10 Example of a crystal oscillator using one HEF4001UB gate.

Fig.11 Output voltages as a function of supply

voltage.

Fig.12 Test set-up for measuring graph of Fig.11.

Condition: all other inputs connected to

ground.

NOTES

If a gate is just used as an amplifying inverter, there are

two possibilities:

1. Connecting the inputs together gives simpler wiring,

but makes the device output not completely

symmetrical.

2. Connecting one input to VSS will give the device a

symmetrical output.

January 1995

7

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