HCC4538B Datasheet, PDF (3/14 Pages) STMicroelectronics – DUAL MONOSTABLE MULTIVIBRATOR

LOGIC DIAGRAM (1/2 of device shown)
HCC/HCF4538B
TABLE 1: Functional Terminal Connections
Function
VDD to Term. NO VSS to Term. NO
Mono Mono Mono Mono
(1)
(2)
(1)
(2)
Input Pulse to
Term. No
Mono Mono
(1)
(2)
Other
Connections
Mono Mono
(1)
(2)
Leading-Edge
Trigger/Retriggerable
3, 5 11, 13
4
12
Leading-Edge
Trigger/Non-retriggerable
3
13
4
12
5, 7 11, 9
Trailing-Edge
Trigger/Retriggerable
3
13
4
12
5
11
Trailing-Edge
Trigger/Non-retriggerable
3
13
5
11
4, 6 12, 10
Notes : 1. A Retriggerable one-shot multivibrator has an output pulse width which is extended on full time period (T) after application of the last
trigger pulse.
2. A Non-retriggerable one-shot multivibrator has a time period (T) referenced from the application of the first trigger pulse.
Pulse Width
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