tc74vhc123af TOSHIBA Semiconductor CORPORATION, tc74vhc123af Datasheet - Page 2

• Manufacturer Part Number: tc74vhc123af
• Description: Dual Monostable Multivibrator
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Pin Assignment
IEC Logic Symbol
Truth Table
1R
2R
2
X: Don’t care
1
CLR
CLR
X
X
1C
2C
A
H
/C
/C
X
L
L
X
1
2
2R
1B
2B
A
A
1
X
X
X
X
CLR
GND
X
2C
1
/C
1
2Q
1B
Q
Inputs
(14)
(15)
(10)
(11)
A
(1)
(2)
(3)
(9)
(6)
(7)
X
X
H
H
B
L
X
X
1
2
3
4
5
6
7
8
CLR
R
C
R
R
C
R
TC74VHC123A
H
H
H
H
L
X
X
X
X
/C
/C
&
&
(top view)
X
X
Q
L
L
L
Outputs
Q
H
H
H
16
15
14
13
12
11
10
9
(13)
(12)
Inhibit
Inhibit
Output Enable
Output Enable
Output Enable
Reset
(4)
(5)
V
1R
1C
1Q
2B
2
2
2
CC
Q
CLR
A
1Q
2Q
1
2
Function
X
X
Q
Q
/C
X
2
1R
2R
TC74VHC123,221AF/AFN/AFT/AFK
2
1
CLR
CLR
X
X
1C
2C
/C
/C
2
1
1B
2B
A
A
X
X
X
X
(14)
(15)
(10)
(11)
(1)
(2)
(3)
(9)
(6)
(7)
R
C
R
R
C
R
TC74VHC221A
X
X
X
X
/C
/C
&
&
X
X
1
1
(13)
(12)
(4)
(5)
2006-06-01
1Q
2Q
1
2
Q
Q