MC14516B(2000) Просмотр технического описания (PDF) - ON Semiconductor
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MC14516B Datasheet PDF : 12 Pages
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MC14516B
PIN ASSIGNMENT
PE 1
Q3 2
16 VDD
15 C
P3 3
14 Q2
P0 4
13 P2
CARRY IN 5
12 P1
Q0 6
11 Q1
CARRY OUT 7
10 U/D
VSS 8
9R
BLOCK DIAGRAM
1
PE
Q0
6
5
CARRY IN
9
RESET
Q1
11
10
UP/DOWN
15
CLOCK
Q2
14
4
P0
12
P1
Q3
2
13
P2
3
P3
CARRY
OUT
7
VDD = PIN 16
VSS = PIN 8
TRUTH TABLE
Carry In
Up/Down
Preset
Enable
Reset
Clock
Action
1
X
0
0
X
No Count
0
1
0
0
Count Up
0
0
0
0
Count Down
X
X
1
0
X
Preset
X
X
X
1
X
Reset
X = Don’t Care
NOTE: When counting up, the Carry Out signal is normally high and is low only
when Q0 through Q3 are high and Carry In is low. When counting down,
Carry Out is low only when Q0 through Q3 and Carry In are low.
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