74HC238D datasheet(6/7 Pages) PHILIPS

No. de pieza	74HC238D

Descripción Electrónicos	3-to-8 line decoder/demultiplexer

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Fabricante Electrónico	PHILIPS [NXP Semiconductors]

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December 1990

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Philips Semiconductors

Product speciﬁcation

3-to-8 line decoder/demultiplexer

74HC/HCT238

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see

“74HC/HCT/HCU/HCMOS Logic Family Specifications”.

Output capability: standard

ICC category: MSI

Note 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.

AC CHARACTERISTICS FOR 74HCT

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

INPUT

UNIT LOAD COEFFICIENT

An

En

E3

0.70

0.40

1.45

SYMBOL PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HCT

VCC

(V)

WAVEFORMS

+25

−40 to +85

−40 to +125

min.

typ.

max.

min. max.

min.

max.

tPHL

propagation delay

An to Yn

21

35

44

53

ns

4.5

Fig.6

tPLH

propagation delay

An to Yn

17

35

44

53

ns

4.5

Fig.6

tPHL

propagation delay

E3 to Yn

22

37

46

56

ns

4.5

Fig.6

tPLH

propagation delay

E3 to Yn

18

37

46

56

ns

4.5

Fig.6

tPHL

propagation delay

En to Yn

21

35

44

53

ns

4.5

Fig.7

tPLH

propagation delay

En to Yn

18

35

44

53

ns

4.5

Fig.7

tTHL/ tTLH

output transition time

7

15

19

22

ns

4.5

Figs 6 and 7

Número de pieza similar - 74HC238D

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