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74HC9323A Datasheet, PDF (3/6 Pages) NXP Semiconductors – Programmable ripple counter with oscillator 3-State
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Philips Semiconductors
Programmable ripple counter with oscillator
(3-State)
Objective specification
74HC/HCT9323A
PIN CONFIGURATION
OUT 1
S2 2
S1 3
GND 4
8 VCC
7 X1
6 X2
5 MR
SK00013
IEC LOGIC SYMBOL
6
7 X1
5
MR
X2
CP
CD
3
S1
2
S2 OUT
1
SK00014
PIN DESCRIPTION
PIN NUMBER
SYMBOL
1
OUT
3, 2
S1-S2
4
GND
5
MR
6
X2
7
X1
8
VCC
FUNCTION
Counter output
Mode select inputs for
divide by 1, 2, 4 or 8
Ground (0V)
Master reset (active LOW)
Oscillator pin
Clock input/oscillator pin
Positive supply voltage
FUNCTION TABLE
INPUTS
S1
S2
0
0
0
1
1
0
1
1
FUNCTIONAL DIAGRAM
7 X1
5 MR
6
X2
CP
3-STAGE BINARY COUNTER
AND DECODER
CD
S1 S2
OUT
3
2
1
OUTPUTS
OUT
fI
fI/2
fI/4
fI/8
SK00015
1995 Oct 27
3
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