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CD74HC137_07 Datasheet, PDF (6/19 Pages) Texas Instruments – High-Speed CMOS Logic, 3- to 8-Line Decoder/Demultiplexer with Address Latches
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CD74HC137, CD74HCT137, CD54HC237, CD74HC237, CD74HCT237
Prerequisite For Switching Specifications (Continued)
PARAMETER
LE Pulse Width
HCT TYPES
An to LE Setup Time
An to LE Hold Time
CD74HCT137
CD74HCT237
LE Pulse Width
SYMBOL
tW
tSU
tH
tH
tW
VCC
(V)
MIN
2
50
4.5
10
6
9
4.5
10
4.5
7
4.5
5
4.5
10
25oC
TYP
-
-
-
-
-
-
-
MAX
-
-
-
-40oC TO 85oC -55oC TO 125oC
MIN MAX MIN MAX UNITS
65
-
75
-
ns
13
-
15
-
ns
1
-
13
-
ns
-
13
-
15
-
ns
-
9
-
11
-
ns
-
5
-
5
-
ns
-
13
-
15
-
ns
Switching Specifications Input tr, tf = 6ns
PARAMETER
HC TYPES
Propagation Delay
CD74HC137, CD74HCT137
An to any Y
Propagation Delay
’HC237, CD74HCT237
An to any Y
Address to Output
CD74HC137
’HC237
OE0 to any Y or Y
OE1 to any Y or Y
LE to any Y or Y
Power Dissipation
Capacitance, (Notes 3, 4)
CD74HC137
’HC237
Output Transition Time
Input Capacitance
TEST
SYMBOL CONDITIONS VCC (V) MIN
tPLH, tPHL CL = 50pF
tPLH, tPHL CL = 50pF
2
-
4.5
-
6
-
2
-
4.5
-
6
-
tPLH, tPHL CL = 15pF
tPLH, tPHL CL = 15pF
tPLH, tPHL CL = 50pF
tTLH, tTHL CL = 50pF
tTLH, tTHL CL = 50pF
5
5
5
-
2
-
4.5
-
6
-
2
-
4.5
-
6
-
2
-
4.5
-
6
-
CPD CL = 15pF
CPD CL = 15pF
tTLH, tTHL CL = 50pF
CI
-
5
-
5
-
2
-
4.5
-
6
-
-
-
25oC
TYP MAX
- 180
-
36
-
31
- 160
-
32
-
27
15
-
13
-
- 145
-
29
-
25
- 145
-
29
-
25
- 190
-
38
-
32
19
-
23
-
-
75
-
15
-
13
-
10
-40oC TO
85oC
-55oC TO 125oC
MIN MAX MIN MAX UNITS
-
225
-
-
45
-
-
38
-
-
200
-
270 ns
54
ns
46
ns
240 ns
-
40
-
-
34
-
48
ns
41
ns
-
-
-
-
-
-
-
180
-
-
36
-
-
31
-
-
180
-
-
36
-
-
31
-
-
240
-
-
48
-
-
41
-
-
ns
-
ns
220 ns
44
ns
38
ns
220 ns
44
ns
38
ns
285 ns
57
ns
48
ns
-
-
-
-
pF
-
-
-
-
pF
-
95
-
110 ns
-
19
-
22
ns
-
16
-
19
ns
-
10
-
10
pF
6
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