CD54HC190F3A

Counter Dividers Overview

The CD54HC190F3A is a high-speed CMOS asynchronous presettable BCD decade counter manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an extended temperature range from -55°C to 125°C. The device features synchronous counting, asynchronous parallel loading, and look-ahead carry capabilities for high-speed cascading. It includes two outputs specifically designed for n-bit cascading applications.

Counter Dividers Feature Summary

• Asynchronous presettable BCD decade counting with parallel load capability
• Synchronous up/down counting controlled by direction input
• Look-ahead carry output for high-speed multi-stage cascading

Counter Dividers Applications

• High-speed synchronous n-bit counters
• Digital timing circuits requiring decade counting sequences
• Cascaded digital systems utilizing look-ahead carry logic

Counter Dividers Procurement Notes

Verify the specific suffix F3A corresponds to the ceramic DIP package configuration required for your design. Confirm that the military-grade rating aligns with environmental specifications. Ensure compatibility with existing board layouts before finalizing procurement orders.

Counter Dividers Selection Notes

Select this component when a BCD decade sequence is required rather than binary counting. Consider the HC series for broader voltage flexibility compared to HCT variants. Evaluate thermal management requirements given the wide operating temperature range and power dissipation characteristics.

Counter Dividers Part Context

This part belongs to the CD54/74HC190 family of high-speed CMOS logic devices. It serves as the decade counter counterpart to the binary CD54HC191. The CD54 prefix indicates a military-grade specification level distinct from commercial variants.

Counter Dividers Replacement Considerations

CD54HC191F3A provides identical functionality but counts in binary instead of BCD.