HCF4521B 查看數據表（PDF） - STMicroelectronics
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HCF4521B Datasheet PDF : 12 Pages
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HCF4521B
IINPUT EQUIVALENT CIRCUIT
BLOCK DIAGRAM
PIN DESCRIPTION
PIN No
10, 11, 12,
13, 14, 15, 1
2
4
7
9
6
3
5
8
16
SYMBOL NAME AND FUNCTION
Q18 to Q24 Outputs Counter
RESET
OUT2
OUT1
IN1
IN2
VSS1
VDD1
VSS
VDD
Reset Input
Output Crystal Oscillator
Output RC Oscillator
Clock Input
Clock Input
Ext. Neg. Supply Voltage
Ext. Pos. Supply Voltage
Negative Supply Voltage
Positive Supply Voltage
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