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CD54HC4538_07 Datasheet, PDF (7/20 Pages) Texas Instruments – High-Speed CMOS Logic Dual Retriggerable Precision Monostable Multivibrator
◁
CD54HC4538, CD74HC4538, CD54HCT4538, CD74HCT4538
Switching Specifications CL = 50pF, Input tr, tf = 6ns, RX = 10KΩ, CX = 0
PARAMETER
HC TYPES
TEST
25oC
SYMBOL CONDITIONS VCC (V) MIN TYP MAX
-40oC TO
85oC
MIN MAX
-55oC TO
125oC
MIN MAX UNITS
Propagation Delay
A, B to Q
tPLH
CL = 50pF
2
-
-
250
-
315
-
375 ns
4.5
-
-
50
-
63
-
75
ns
A, B to Q
tPHL
CL = 15pF
5
CL = 50pF
6
CL = 50pF
2
4.5
-
21
-
-
-
-
-
-
43
-
54
-
-
-
250
-
315
-
-
-
50
-
63
-
-
ns
64
ns
375 ns
75
ns
R to Q
tPHL
CL = 15pF
5
CL = 50pF
6
CL = 50pF
2
4.5
-
21
-
-
-
-
-
-
43
-
54
-
-
-
250
-
315
-
-
-
50
-
63
-
-
ns
64
ns
375 ns
75
ns
R to Q
tPLH
CL = 15pF
5
CL = 50pF
6
CL = 50pF
2
4.5
-
21
-
-
-
-
-
-
43
-
54
-
-
-
250
-
315
-
-
-
50
-
63
-
-
ns
64
ns
375 ns
75
ns
Output Transition Time
CL = 15pF
5
-
21
-
-
-
-
-
ns
CL = 50pF
6
-
-
43
-
54
-
64
ns
tTLH, tTHL CL = 50pF
2
-
-
75
-
95
-
110 ns
4.5
-
-
15
-
19
-
22
ns
6
-
-
13
-
16
-
19
ns
Output Pulse Width
RX = 10k, CX = 0.1µF
τ
CL = 50pF
3
0.64 - 0.78 0.612 0.812 0.605 0.819 ms
5
0.63 - 0.77 0.602 0.798 0.595 0.805 ms
Output Pulse Width Match,
-
-
Same Package
Power Dissipation Capacitance CPD
CL = 15pF
5
(Notes 8, 9)
-
±1
-
-
-
-
- 136 -
-
-
-
-
%
-
pF
Input Capacitance
HCT TYPES
CI
CL = 50pF
-
10
-
10
-
10
-
10
pF
Propagation Delay
A, B to Q
A, B to Q
tPLH
CL = 50pF
4.5
-
-
55
-
69
-
83
ns
CL = 15pF
5
-
23
-
-
-
-
-
ns
tPHL
CL = 50pF
4.5
-
-
55
-
69
-
83
ns
CL = 15pF
5
-
23
-
-
-
-
-
ns
7
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