74HC238 查看數據表（PDF） - Philips Electronics
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74HC238 Datasheet PDF : 7 Pages
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Philips Semiconductors
3-to-8 line decoder/demultiplexer
Product specification
74HC/HCT238
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
+25
min. typ. max.
74HC
−40 to +85
min. max.
−40 to +125
min. max.
UNIT VCC WAVEFORMS
(V)
tPHL/ tPLH propagation delay
An to Yn
tPHL/ tPLH propagation delay
E3 to Yn
47 150
190
225 ns 2.0 Fig.6
17 30
38
45
4.5
14 26
33
38
6.0
52 160
200
240 ns 2.0 Fig.6
19 32
40
48
4.5
15 27
34
41
6.0
tPHL/ tPLH propagation delay
En to Yn
50 155
195
235 ns 2.0 Fig.7
18 31
39
47
4.5
14 26
33
40
6.0
tTHL/ tTLH output transition time
19 75
95
110 ns 2.0 Figs 6 and 7
7 15
19
22
4.5
6 13
16
19
6.0
December 1990
5
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