CD74HC85PWR

Comparators Overview

The CD74HC85PWR is a high-speed CMOS logic 4-bit magnitude comparator manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features active-high outputs indicating A<B, A=B, or A>B conditions. The device utilizes a 16-TSSOP surface-mount package with a width of 4.40 mm. Quiescent current is specified at a maximum of 8 µA. Propagation delays vary between 20 ns and 33 ns depending on load capacitance and voltage. It supports an operating temperature range from -55°C to +125°C.

Comparators Feature Summary

• Provides digital magnitude comparison for 4-bit binary inputs
• Features cascading inputs for expanding bit-width comparisons
• Delivers active-high logic outputs for comparison results

Comparators Applications

• Digital arithmetic logic units requiring magnitude evaluation
• Address decoding circuits in microprocessor systems
• Data sorting and selection logic in embedded controllers

Comparators Procurement Notes

Verify the suffix 'PWR' confirms the TSSOP-16 package and reel packaging format. Confirm RoHS compliance status matches project requirements. Ensure the manufacturer is Texas Instruments to avoid counterfeit components. Check moisture sensitivity level ratings if lead-free soldering processes are utilized. Validate that the specific lot date code meets storage and shelf-life constraints.

Comparators Selection Notes

Select this component when a 4-bit magnitude comparison function is required in a space-constrained design. The TSSOP-16 package offers a compact footprint suitable for dense PCB layouts. The wide operating temperature range makes it suitable for industrial environments. Consider propagation delay specifications relative to system clock speeds. Evaluate power consumption needs against the low quiescent current specification.

Comparators Part Context

This part belongs to the Texas Instruments 74HC series of high-speed CMOS logic devices. The 74HC85 family provides standardized magnitude comparison functionality. The 'CD' prefix indicates commercial grade temperature rating extensions. The 'PWR' suffix denotes the specific tape-and-reel packaging variant. This series is widely used in general-purpose digital logic applications.

Comparators Replacement Considerations

Check for direct pin-compatible alternatives such as SN74HC85PWR. Verify functional equivalence for 4-bit magnitude comparison. Ensure supply voltage and temperature ranges match application requirements. Confirm package dimensions and thermal characteristics are identical.