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CD74HC138 Datasheet(PDF) 6 Page - Texas Instruments

Part # CD74HC138
Description  CDx4HC138, CDx4HCT138, CDx4HC238, CDx4HCT238 High-Speed CMOS Logic 3- to 8-Line Decoder/Demultiplexer Inverting and Noninverting
PDF  29 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

CD74HC138 Datasheet(HTML) 6 Page - Texas Instruments

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5.5 Switching Characteristics
(2)
Input tt = 6ns. (See Parameter Measurement Information)
PARAMETER
TEST CONDITIONS
VCC (V)
25°C
-40°C to 85°C
-55°C to 125°C
UNIT
MIN
TYP
MAX
MIN
MAX
MIN
MAX
HC TYPES
tpd
Address to output
CL = 50pF
2
150
190
225
ns
4.5
13
(3)
30
38
45
CL = 50pF
6
26
33
38
Strobe G 0, G 1, G2 to
output HC/HCT 138
CL = 50pF
2
150
190
265
ns
4.5
30
38
53
6
26
33
45
tt
Output transition time
CL = 50pF
2
75
95
110
MHz
4.5
15
19
22
6
13
16
19
Cpd
Power dissipation
capacitance
(1)
CL = 15pF
5
67
pF
Ci
Input capacitance
10
10
10
pF
HCT TYPES
tpd
Address to output
CL = 50pF
4.5
14
(3)
35
44
53
ns
Strobe G2 to output HC/
HCT138
CL = 50pF
4.5
35
44
53
ns
Strobe G 0, G 1 to output
HC/HCT238
CL = 15pF
4.5
40
50
60
ns
tt
Output transition time
CL= 15pF
4.5
15
19
22
Cpd
Power dissipation
capacitance
(1)
CL = 15pF
5
67
pF
Ci
Input capacitance
10
10
10
pF
(1)
CPD is used to determine the dynamic power consumption, per gate.
(2)
For details on power calculation, see SCAA035B
(3)
CL = 15pF and VCC = 5
CD54HC138, CD74HC138, CD54HCT138, CD74HCT138, CD54HC238, CD74HC238, CD54HCT238,
CD74HCT238
SCHS147J – NOVEMBER 1998 – REVISED NOVEMBER 2021
www.ti.com
6
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Copyright © 2021 Texas Instruments Incorporated
Product Folder Links: CD54HC138 CD74HC138 CD54HCT138 CD74HCT138 CD54HC238 CD74HC238
CD54HCT238 CD74HCT238



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