74LVC169 Просмотр технического описания (PDF) - Philips Electronics
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74LVC169 Datasheet PDF : 14 Pages
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Philips Semiconductors
Presettable synchronous 4-bit up/down
binary counter
Product specification
74LVC169
PIN CONFIGURATION
U/D 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
SF00766
LOGIC SYMBOL
3
4
5
6
9
PE
D0 D1 D2 D3
1
U/D
2
CP
TC
15
7
CEP
10
CET
Q0 Q1 Q2 Q3
VCC = Pin 16
GND = Pin 8
14 13 12 11
SF00786
PIN DESCRIPTION
PIN NUMBER
SYMBOL
1
U/D
2
CP
3,4,5,6
7
D0 to D3
CEP
8
GND
9
PE
10
14,13,12,11
15
16
CET
Q0 to Q3
TC
VCC
FUNCTION
up/down control input
clock input (LOW-to-HIGH,
edge-triggered)
data inputs
count enable inputs (active
LOW)
ground (0V)
parallel enable input
(active LOW)
count enable carry input
(active LOW)
flip-flop outputs
terminal count output
(active LOW)
positive supply voltage
LOGIC SYMBOL (IEEE/IEC)
CTR DIV 16
9
M1 [LOAD]
M2 [COUNT]
1
M3 [UP]
M4 [DOWN]
10
G5
3, 5 CT=15
15
7
G6
4, 5 CT=0
2
2, 3, 5, 6+/C7
2, 4, 5, 6–
3
1, 7D
[1]
4
[2]
5
[4]
6
[8]
14
13
12
11
SF00787
1998 May 20
3
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