MC14521B: 24-Stage Frequency Divider

Description: The MC14521B consists of a chain of 24 flip-flops ...
  • 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.
  • 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 Low-power Schottky TTL Load over the Rated Temperature Range.
  • Pb-Free Packages are Available
  • Technical Documentation & Design Resources
    Product Change Notification
    Availability and Samples
    MC14521BDG
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: 24-Stage Frequency Divider
  • Package Type: SOIC-16
  • Package Case Outline: 751B-05
  • MSL: 1
  • Container Type: TUBE
  • Container Qty: 48
  • Inventory

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • Digikey:<1K
  • Mouser:<1K
  • ON Semiconductor:6,624
  • MC14521BDR2G
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: 24-Stage Frequency Divider
  • Package Type: SOIC-16
  • Package Case Outline: 751B-05
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):2 to 4
  • Arrow:0
  • Digikey:>1K
  • Mouser:>1K
  • NLV14521BDG
  • Status: Active
  • Compliance: AEC Qualified PPAP Capable Pb-free Halide free 
  • Description: 24-Stage Frequency Divider
  • Package Type: SOIC-16
  • Package Case Outline: 751B-05
  • MSL: 1
  • Container Type: TUBE
  • Container Qty: 48
  • NLV14521BDR2G
  • Status: Active
  • Compliance: AEC Qualified PPAP Capable Pb-free Halide free 
  • Description: 24-Stage Frequency Divider
  • Package Type: SOIC-16
  • Package Case Outline: 751B-05
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Packages
    Specifications
  • Type: Divider 
  • VCC Min (V):
  • VCC Max (V): 18 
  • tpd Max (ns): 4500 
  • PD Max (W): 0.5 
  • IO Max (mA): 2.25 
  • Package Type: SOIC-16 
  • ON Semiconductor Full Web Site