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MC14521B - 24-Stage Frequency Divider

Datasheet Summary

Features

  • All Stages are Resettable.
  • Reset Disables the RC Oscillator for Low Standby Power Drain.
  • RC and Crystal Oscillator Outputs Are Capable of Driving External Loads.
  • Test Mode to Reduce Test Time.
  • VDD′ and VSS′ Pins Brought Out on Crystal Oscillator Inverter to Allow the Connection of External Resistors for Low.
  • Power Operation.
  • Supply Voltage Range = 3.0 Vdc to 18 Vdc.
  • Capable of Driving Two Low.
  • Power TTL Loads or One Lo.

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Datasheet preview – MC14521B

Datasheet Details

Part number MC14521B
Manufacturer ON Semiconductor
File Size 114.21 KB
Description 24-Stage Frequency Divider
Datasheet download datasheet MC14521B Datasheet
Additional preview pages of the MC14521B datasheet.

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Full PDF Text Transcription

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MC14521B 24-Stage Frequency Divider The MC14521B consists of a chain of 24 flip−flops with an input circuit that allows three modes of operation. The input will function as a crystal oscillator, an RC oscillator, or as an input buffer for an external oscillator. Each flip−flop divides the frequency of the previous flip−flop by two, consequently this part will count up to 224 = 16,777,216. The count advances on the negative going edge of the clock. The outputs of the last seven−stages are available for added flexibility. http://onsemi.
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