MC14521B: 24-Stage Frequency Divider

Datasheet: 24-Stage Frequency Divider
Rev. 10 (123kB)
Product Overview
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Product Change Notification
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
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Case Outlines
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
MC14521BDG Active
Pb-free
Halide free
MC14521B SOIC-16 751B-05 1 260 Tube 48 $0.4507
MC14521BDR2G Active
Pb-free
Halide free
MC14521B SOIC-16 751B-05 1 260 Tape and Reel 2500 $0.4387
NLV14521BDG Last Shipments
AEC Qualified
PPAP Capable
Pb-free
Halide free
MC14521B SOIC-16 751B-05 1 260 Tube 48  
NLV14521BDR2G Active
AEC Qualified
PPAP Capable
Pb-free
Halide free
MC14521B SOIC-16 751B-05 1 260 Tape and Reel 2500 $0.506
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02) : 7,440
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Type
VCC Min (V)
VCC Max (V)
tpd Max (ns)
PD Max (W)
IO Max (mA)
Package Type
MC14521BDG  
 $0.4507 
Pb
H
 Active   
Divider
3
18
4500
0.5
2.25
SOIC-16
MC14521BDR2G  
 $0.4387 
Pb
H
 Active   
Divider
3
18
4500
0.5
2.25
SOIC-16
NLV14521BDR2G  
 $0.506 
Pb
A
H
P
 Active   
Divider
3
18
4500
0.5
2.25
SOIC-16
Case Outlines
751B-05   
Packages
MC14521B: 24-Stage Frequency Divider
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