MC14521BDR2G

Counter Dividers Overview

The MC14521BDR2G is a 24-stage frequency divider manufactured by onsemi in a 16-pin SOIC package. It operates within a supply voltage range of 3.0 Vdc to 18 Vdc and supports an ambient temperature range from -55°C to +125°C. The device features a chain of flip-flops that divide the input frequency by two, allowing counts up to 2^24 (16,777,216). Clocking occurs on the negative-going edge, with outputs available for the last seven stages.

Counter Dividers Feature Summary

• Supports crystal oscillator, RC oscillator, or external oscillator buffer input modes
• All stages are resettable with reset function disabling the RC oscillator for low standby power
• Includes test mode functionality to reduce testing time
• Capable of driving multiple TTL loads across the rated temperature range

Counter Dividers Applications

• Frequency division circuits
• Crystal oscillator applications
• RC oscillator implementations
• External oscillator buffering

Counter Dividers Procurement Notes

Verify the specific ordering suffix 'R2G' corresponds to the SOIC-16 tape and reel packaging configuration. Confirm compliance requirements such as RoHS status and Pb-free designation match project specifications. Ensure the NLV prefix variant is not required if automotive qualification under AEC-Q100 standards is necessary for the application environment.

Counter Dividers Selection Notes

Select this component when a high-count frequency divider is needed with flexible input options including internal oscillators. Consider the wide operating voltage range and industrial temperature capabilities. Verify that the 16-SOIC package dimensions fit the board layout constraints and that the output drive current meets the load requirements for downstream logic families.

Counter Dividers Part Context

This part belongs to the MC14521B series of 24-stage frequency dividers. It is distinct from other logic ICs by its integrated oscillator capabilities and specific test mode feature. The DR2G suffix indicates surface-mount packaging in a reel format, differentiating it from tube-packaged variants like the BDG suffix.

Counter Dividers Replacement Considerations

Check for direct equivalents within the same family or cross-manufacturer CMOS 4000B series counters. Verify pin compatibility and electrical characteristics before substitution.