MC14520BDW

Counter Dividers Overview

The MC14520BDW is a dual binary counter from the onsemi MC14520B series, housed in a 16-pin SOIC-16 Wide (DW) package. It contains two independent internally synchronous 4-stage counters constructed with CMOS technology. The device operates within a supply voltage range of 3.0 Vdc to 18 Vdc and supports an operating temperature range of -55 °C to +125 °C. Each counter features interchangeable Clock and Enable lines for incrementing on either positive-going or negative-going transitions. The maximum clock pulse frequency reaches up to 8.0 MHz at 15 Vdc.

Counter Dividers Feature Summary

• Internally synchronous architecture designed for high internal and external speeds
• Logic edge-clocked design allowing incrementing on positive clock or negative enable transitions
• Interchangeable Clock and Enable lines facilitate cascading multiple stages
• Diode protection provided on all inputs

Counter Dividers Applications

• Multi-stage synchronous counting applications
• Ripple counting applications requiring low power dissipation
• Applications requiring high noise immunity

Counter Dividers Procurement Notes

Verify component authenticity by checking the marking diagram against the physical package. Confirm the presence of the Pb-Free indicator 'G' or microdot symbol. Ensure the ordering suffix matches the required shipping format, as the DW suffix corresponds to the SOIC-16 WB package. Note that specific variants like the MC14520BDWG are marked as discontinued; verify current availability status directly with the manufacturer before procurement.

Counter Dividers Selection Notes

Select this component when a dual binary counter is required instead of BCD counting. The MC14520B differs from the MC14518B primarily in its counting sequence. Verify that the logic family requirements align with the CMOS technology used. Consider the wide operating temperature range if the application involves extreme environmental conditions. Ensure the package type fits the PCB layout constraints.

Counter Dividers Part Context

This part belongs to the MC145xxB series of complementary MOS logic devices manufactured by onsemi. These components are built using P-channel and N-channel enhancement mode devices in a single monolithic structure. The series includes various logic functions such as counters, shift registers, and decoders, sharing common electrical characteristics and packaging options across different functional types.

Counter Dividers Replacement Considerations

MC14518BDWR2G: Dual BCD Counter variant with identical pinout and electrical specifications but different counting sequence.