74HC238D NXP Semiconductors, 74HC238D Datasheet - Page 8

• Manufacturer Part Number: 74HC238D
• Description: Decoder/Demultiplexer Single 3-to-8 16-Pin SO Bulk
• Manufacturer: NXP Semiconductors

Specifications of 74HC238D

• Package: 16SO
• Logic Function: Decoder/Demultiplexer
• Logic Family: HC
• Number Of Element Outputs: 8
• Number Of Elements Per Chip: 1
• Number Of Input Enables Per Element: 3
• Demultiplexing Capability: 1-of-8
• Fabrication Technology: CMOS
• Typical Operating Supply Voltage: 5 V
• Operating Temperature: -40 to 125 °C

NXP Semiconductors
Table 7.
GND = 0 V; test circuit see
[1]
[2]
[3]
11. Waveforms
74HC_HCT238_3
Product data sheet
Symbol Parameter
74HCT238
t
t
C
pd
t
Fig 6. Input (An, E3) to output (Yn) propagation delays and output transition times
PD
t
t
C
P
f
f
C
V
N = number of inputs switching;
pd
t
i
o
D
CC
is the same as t
PD
L
= output frequency in MHz;
= input frequency in MHz;
(C
is the same as t
= output load capacitance in pF;
= C
is used to determine the dynamic power dissipation (P
= supply voltage in V;
L
Measurement points are given in
V
propagation delay An to Yn; see
transition time
power dissipation
capacitance
PD
OL
V
Dynamic characteristics
CC
and V
V
2
CC
f
2
OH
o
) = sum of outputs.
THL
PHL
f
are typical voltage output levels that occur with the output load.
i
and t
N +
and t
Figure
TLH
PLH
(C
Conditions
E3 to Yn; see
En to Yn or see
V
see
per package;
V
.
CC
I
.
L
V
V
V
V
V
V
= GND to V
8.
CC
CC
CC
CC
CC
CC
An, E3 input
Figure 6
= 4.5 V;
V
CC
Yn output
= 4.5 V
= 5.0 V; C
= 4.5 V
= 5.0 V; C
= 4.5 V
= 5.0 V; C
2
Table
f
o
) where:
and
8.
Figure 6
Figure 6
CC
Figure 7
L
L
L
Figure 7
= 15 pF
= 15 pF
= 15 pF
V
1.5 V
M
Rev. 03 — 16 July 2007
t
t
THL
PHL
V
Y
D
in W):
V
M
V
X
[1]
[1]
[1]
[2]
[3]
t
Min
TLH
t
-
-
-
-
-
-
-
-
PLH
74HC238; 74HCT238
25 C
Typ
19
18
20
20
20
21
76
7
001aag757
3-to-8 line decoder/demultiplexer
Max
35
37
35
15
-
-
-
-
(85 C)
40 C to +125 C
Max
44
46
44
19
-
-
-
-
© NXP B.V. 2007. All rights reserved.
(125 C)
Max
53
56
53
22
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
pF
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