HD74HC4538 Datasheet, PDF (9/14 Pages) Hitachi Semiconductor – Dual Precision Retriggerable/Resettable Monostable Multivibrators

HD74HC4538
A
Rising-Edge
Trigger
B
CX
RX
VCC
T1
T2
Q
Q
CD
CX
RX
VCC
T1
T2
Q
A
B
Q
Falling-Edge
Trigger
CD
Application Data
Figure 4. Nonritriggerable Monostable Circuitry
10000.0
Vcc = 2.5 V
1000.0
100.0
10.0
1.0
0.1
10²
Rext
1 kΩ
10 kΩ
100 kΩ
1 MΩ
10³
10⁴
10⁵
10⁶
10⁷
Timing Capacitance Cext (pF)
Rev.2.00 Mar 30, 2006 page 9 of 13