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HCF4521BM1 Folha de dados(PDF) 1 Page - STMicroelectronics |
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HCF4521BM1 Folha de dados(HTML) 1 Page - STMicroelectronics |
1 / 12 page HCF4521B 24 STAGE FREQUENCY DIVIDER ® February 1999 s VERY LOW QUIESCENT CURRENT s HIGH NOISE IMMUNITY s VOLTAGE SUPPLY RANGE 3V TO 18V s ALL STAGES ARE RESETTABLE s RESET DISABLES THE RC OSCILLATOR FOR LOW STANDBY POWER DRAIN s RC AND CRYSTAL OSCILLATOR OUTPUT ARE CAPABLE OF DRIVING EXTERNAL LOADS DESCRIPTION The HCF4521B is a monolithic integrated circuit, available in 16-lead dual-in-line plastic package and plastic micro packages. The HCF4521B have a chain of 24 flip-flops with an input circuit that allows three modes of operation. The input circuit functions as a crystal or an RC oscillator or as an input buffer for an external oscillator. Each flip-flop performs a divide-by-two function giving a total count of 2 24 = 16,777,216. The count advances on the negative going edge of the clock. Access is available to the final seven stages giving the device added flexibility. PIN CONNECTION M1 (Micro Package) EY (Plastic Package) ORDER CODES : HCF4521BEY HCF4521BM1 1/12 |
Nº de peça semelhante - HCF4521BM1 |
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Descrição semelhante - HCF4521BM1 |
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