HD74LV221A Datasheet, PDF (2/19 Pages) Hitachi Semiconductor – Dual Monostable Multivibrators

HD74LV221A
Function Table
Inputs
CLR
A
B
L
X
X
X
H
X
X
X
L
H
L
↑
H
↓
H
↑
L
H
Note: H: High level
L: Low level
X: Immaterial
↑: Low to high transition
↓: High to low transition
: High level pulse
: Low level pulse
Pin Arrangement
Outputs
Q
Q
L
H
L
H
L
H
1A 1
1B ²
1CLR ³
1Q 4
2Q 5
2Cext ⁶
2Rext / Cext 7
GND 8
(Top view)
16 V_CC
15 _{1Rext / Cext}
14 1Cext
13 1Q
12 _2Q
11 2CLR
10 2B
9 _2A
2