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HCF4521B

Features: ` HIGH NOISE IMMUNITY`VOLTAGE SUPPLY RANGE 3V TO 18V` ALL STAGE ARE PRESETTABLE` RESET DISABLES THE RC OSCILLATOR FOR LOW STANDBY POWER DRAIN` RC AND CRYSTAL OSCILLATOR OUTPUT ARE CAPABLE OF DRIVING EXTERNAL LOADS` QUIESCENT CURRENT SPECIF. UP TO 20V` 5V, 10V AND 15V PARAMETRIC RATINGS` ...

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SeekIC No. : 004359712 Detail

HCF4521B: Features: ` HIGH NOISE IMMUNITY`VOLTAGE SUPPLY RANGE 3V TO 18V` ALL STAGE ARE PRESETTABLE` RESET DISABLES THE RC OSCILLATOR FOR LOW STANDBY POWER DRAIN` RC AND CRYSTAL OSCILLATOR OUTPUT ARE CAPABLE ...

HCF4521B Data Sheet

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Part Number:
HCF4521B
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

` HIGH NOISE IMMUNITY
`VOLTAGE SUPPLY RANGE 3V TO 18V
` ALL STAGE ARE PRESETTABLE
` RESET DISABLES THE RC OSCILLATOR FOR LOW STANDBY POWER DRAIN
` RC AND CRYSTAL OSCILLATOR OUTPUT ARE CAPABLE OF DRIVING EXTERNAL LOADS
` QUIESCENT CURRENT SPECIF. UP TO 20V
` 5V, 10V AND 15V PARAMETRIC RATINGS
` INPUT LEAKAGE CURRENT
    II = 100nA (MAX) AT VDD = 18V TA = 25
` 100% TESTED FOR QUIESCENT CURRENT
` MEETS ALL REQUIREMENTS OF JEDEC JESD13B "STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES
    CMOS DEVICES"


Pinout

Connection Diagram


Specifications

Symbol
 Parameter
Value
Unit
VDD
 Supply Voltage
-0.5 to +22
V
VI
 DC Input Voltage
-0.5 to VDD + 0.5
V
II
 DC Input Current
± 10
mA
PD
 Power Dissipation per Package
200
mW
Power Dissipation per Output Transistor
100
mW
Top
 Operating Temperature
-55 to +125
Tstg
 Storage Temperature
-65 to +150
Absolute Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation under these conditions is not implied.

All voltage values are referred to VSS pin voltage.


Description

HCF4521B is a monolithic integrated circuit fabricated in Metal Oxide Semiconductor technology available in DIP and SOP packages.

HCF4521B has a chain of 24 flip-flops with an input circuit that allows three modes of operation. The input circuit functions as a crystal or RC oscillator or as an input buffer for an external oscillator. Each flip-flop preforms a divide-by-two function giving a total count of 224 = 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.




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