MC14521B: 24-Stage Frequency Divider

Overview
Specifications
Packages
Datasheet: 24-Stage Frequency Divider
Rev. 10 (123kB)
»View Reliability Data
»View Material Composition
»Product Change Notification (5)
Product Overview
Product Description
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 and Samples
Product
Status
Compliance
Description
Package
MSL*
Container
Budgetary Price/Unit
Type
Case Outline
Type
Qty.
MC14521BDG Active
Pb-free
Halide free
24-Stage Frequency Divider SOIC-16 751B-05 1 Tube 48 $0.4
MC14521BDR2G Active
Pb-free
Halide free
24-Stage Frequency Divider SOIC-16 751B-05 1 Tape and Reel 2500 $0.4
NLV14521BDG Active
AEC Qualified
PPAP Capable
Pb-free
Halide free
24-Stage Frequency Divider SOIC-16 751B-05 1 Tube 48 $0.44
NLV14521BDR2G Active
AEC Qualified
PPAP Capable
Pb-free
Halide free
24-Stage Frequency Divider SOIC-16 751B-05 1 Tape and Reel 2500 $0.44
Moisture Sensitivity level (MSL) for surface mount devices (lead free measured at 260°C reflow, non lead free at 235°C reflow)
Market Leadtime (weeks) :
Digi-Key   (2014-09-02 00:00) : >1K
Mouser   (2014-09-02 00:00) : >1K
Newark   (2014-09-02 00:00) : <1K
Market Leadtime (weeks) :
Digi-Key   (2014-09-02 00:00) : <1K
Mouser   (2014-09-02 00:00) : >1K
Market Leadtime (weeks) :
Market Leadtime (weeks) :
Datasheet: 24-Stage Frequency Divider
Rev. 10 (123kB)
»View Reliability Data
»View Material Composition
»Product Change Notification (5)
Product Overview

Product Compliance Status Description Type VCC Min (V) VCC Max (V) tpd Max (ns) PD Max (W) IO Max (mA) Package Type
 Pb-free 
 Halide free 
 Active     24-Stage Frequency Divider   Divider   3   18   4500   0.5   2.25   SOIC-16 
 Pb-free 
 Halide free 
 Active     24-Stage Frequency Divider   Divider   3   18   4500   0.5   2.25   SOIC-16 
 AEC Qualified 
 PPAP Capable 
 Pb-free 
 Halide free 
 Active     24-Stage Frequency Divider   Divider   3   18   4500   0.5   2.25   SOIC-16 
 AEC Qualified 
 PPAP Capable 
 Pb-free 
 Halide free 
 Active     24-Stage Frequency Divider   Divider   3   18   4500   0.5   2.25   SOIC-16 
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