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Número de pieza | 74221 | |
Descripción | Dual Monostable Multivibrators (with Schmitt Trigger Input) | |
Fabricantes | Hitachi Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de 74221 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
No Preview Available ! HD74HC221
Dual Monostable Multivibrators (with Schmitt Trigger Input)
Description
Each multivibrator features both a negative, A, and a positive, B, transition triggered input, either of which
can be used as an inhibit. Also included is a clear inpt that when taken low resets the one shot. The
HD74HC221 can be triggered on the positive transition of teh clear while A is held low and B is held high.
This device is a non-retriggerable, and therefore cannot be retriggered until the output pulse times out.
The output pulse equation is simply:
tW = 0.7·(Rext)·(Cext)
Features
• High Speed Operation
• High Output Current: Fanout of 10 LSTTL Loads
• Wide Operating Voltage: VCC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current
Function Table
Inputs
Outputs
Clear
A
B
Q
Q
LX X L H
XH X L H
XX L L H
HL
HH
LH
1 page 19.20
20.00 Max
16
9
1
1.3
1.11 Max
8
Unit: mm
7.62
2.54 ± 0.25
0.48 ± 0.10
0.25
+
–
0.13
0.05
0° – 15°
Hitachi Code
JEDEC
EIAJ
Weight (reference value)
DP-16
Conforms
Conforms
1.07 g
5 Page |
Páginas | Total 8 Páginas | |
PDF Descargar | [ Datasheet 74221.PDF ] |
Número de pieza | Descripción | Fabricantes |
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