74HC02 查看數據表（PDF） - Philips Electronics

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74HC02

Quad 2-input NOR gate

Philips Electronics 

Philips Semiconductors

Quad 2-input NOR gate

Product specification

74HC/HCT02

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.

Output capability: standard

ICC category: SSI

Notes to HCT types

The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications.

To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.

INPUT

nA, nB

UNIT LOADCOEFFICIENT

1.50

AC CHARACTERISTICS FOR 74HCT

GND = 0 V; tr = tf = 6 ns; CL = 50 pF

SYMBOL PARAMETER

tPHL/ tPLH

tTHL/ tTLH

min.

propagation delay

nA, nB to nY

output transition time

Tamb (°C)

74HCT

+25

−40 to+85

typ. max. min. max.

11 19

24

7 15

19

−40 to+125

min. max.

29

22

UNIT

ns

ns

TEST CONDITIONS

VCC WAVEFORMS

(V)

4.5 Fig.6

4.5 Fig.6

AC WAVEFORMS

HC: VM = 50%; VI = GND to VCC

HCT: VM = 1.3 V; VI = GND to 3 V.

Fig.6 Waveforms showing the input (nA, nB) to output (nY) propagation delays and the output transition times.

PACKAGE OUTLINES

See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.

December 1990

5

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