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TC74AC161P Datasheet(PDF) 2 Page - Toshiba Semiconductor

Part # TC74AC161P
Description  TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
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Manufacturer  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TC74AC161P Datasheet(HTML) 2 Page - Toshiba Semiconductor

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TC74AC161,163P/F/FT
2012-02-29
2
Pin Assignment
IEC Logic Symbol
Truth Table (Note)
Inputs
Outputs
CLR
(161)
CLR
(163)
LOAD
ENP
ENT
CK
(161)
CK
(163)
QA
QB
QC
QD
Function
L
L
X
X
X
X
L
L
L
L
Reset to “0”
H
H
L
X
X
A
B
C
D
Preset Data
H
H
H
X
L
No Change
No Count
H
H
H
L
X
No Change
No Count
H
H
H
H
H
Count Up
Count
H
X
X
X
X
No Change
No Count
Note:
X: Don’t care
A, B, C, D: Logic level of data inputs
Carry: Carry = ENT·QA·QB·QC·QD
VCC
16
Carry Output
QA
QB
15
14
13
12
11
10
CLR
1
2
3
4
5
6
7
B
C
D
ENP
GND
QC
8
LOAD
9
QD
ENT
(top view)
CK
A
(9)
(1)
(10)
(2)
(7)
ENP
1, 5D
(1)
CK
(3)
(4)
B
A
(15)
(14)
QB
(13)
QA
QC
CT = 0
M1
LOAD
CLR
C
(5)
(6)
D
(12)
QD
(11)
Carry Output
ENT
TC74AC161
CTRDIV 16
M2
G3
G4
C5/2, 3, 4+
3CT = 15
(2)
(4)
(8)
(9)
(1)
(10)
(2)
(7)
ENP
1, 5D
(1)
CK
(3)
(4)
B
A
(15)
(14)
QB
(13)
QA
QC
5CT = 0
M1
LOAD
CLR
C
(5)
(6)
D
(12)
QD
(11)
Carry Output
ENT
TC74AC163
CTRDIV 16
M2
G3
G4
C5/2, 3, 4+
3CT = 15
(2)
(4)
(8)


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