HCF4510B_02 Datasheet, PDF (2/11 Pages) STMicroelectronics – PRESETTABLE BCD UP/DOWN COUNTER

HCF4510B
IINPUT EQUIVALENT CIRCUIT
FUNCTIONAL DIAGRAM
PIN DESCRIPTION
PIN No
SYMBOL NAME AND FUNCTION
1
4, 12, 13, 3
6, 11, 14, 2
15
10
5
7
9
8
16
PRESET
ENABLE
Preset Enable Input
P1 to P4 Inputs
Q1 to Q4 Outputs
CLOCK Clock Input
UP/DOWN Up/Down Control Input
CARRY-IN Carry Input
CARRY-OUT Carry Output
RESET Reset Input
V_SS
Negative Supply Voltage
V_DD
Positive Supply Voltage
TRUTH TABLE
CL
X
X
X
X : Don’t Care
CARRY-IN
(Cl)
H
L
L
X
X
UP/DOWN
X
H
L
X
X
PRESET
ENABLE
L
L
L
H
X
RESET
L
L
L
L
H
ACTION
NO COUNT
COUNT UP
COUNT DOWN
PRESET
RESET
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