74LVC161 데이터 시트보기 (PDF) - Philips Electronics
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74LVC161 Datasheet PDF : 14 Pages
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Philips Semiconductors
Presettable synchronous 4-bit binary counter;
asynchronous reset
Product specification
74LVC161
PIN CONFIGURATION
MR 1
CP 2
D0 3
D1 4
D2 5
D3 6
CEP 7
GND 8
16 VCC
15 TC
14 Q0
13 Q1
12 Q2
11 Q3
10 CET
9 PE
SF00656
LOGIC SYMBOL
15
TC
3
D0
Q0
14
4
D1
Q1
13
5
D2
Q2
12
6
D3
Q3
11
9
PE
CEP CET CP MR
7 10 2 1
VCC = Pin 16
GND = Pin 8
SY00065
PIN DESCRIPTION
PIN NUMBER
SYMBOL
1
MR
2
3,4,5,6
7
8
9
10
14,13,12,11
15
16
CP
D0 to D3
CEP
GND
PE
CET
Q0 to Q3
TC
VCC
FUNCTION
asynchronous master
reset (active LOW)
clock input (LOW-to-HIGH,
edge-triggered)
data inputs
count enable inputs
ground (0V)
parallel enable input
(active LOW)
count enable carry input
flip-flop outputs
terminal count output
positive supply voltage
LOGIC SYMBOL (IEEE/IEC)
1
CTR4
R
9
M1
7
G3
10
G4
2
C2 /1,3,4+
3
1,2 D
4
5
6
14
13
12
11
15
4 CT=15
SY00066
1998 May 20
3
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