CD74HC85PWT

Comparators Overview

The CD74HC85PWT is a high-speed CMOS 4-bit magnitude comparator manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and features active-high outputs for A<B, A=B, and A>B conditions. The device utilizes a 16-TSSOP package with a width of 4.40mm. Key electrical parameters include a maximum propagation delay of 33ns at 6V with a 50pF load, output currents of 5.2mA for both high and low states, and a static current of 8µA. It supports a wide operating temperature range from -55°C to +125°C.

Comparators Feature Summary

• Provides four independent bit comparison capabilities for digital logic applications
• Features cascading inputs to allow expansion to multiple bits without additional components
• Delivers active-high outputs indicating less than, equal to, or greater than relationships

Comparators Applications

• Digital arithmetic logic units requiring magnitude evaluation
• Address decoding systems in microprocessor-based designs
• Data sorting circuits in embedded control systems

Comparators Procurement Notes

Verify the specific suffix 'PWT' confirms the 16-TSSOP surface-mount package and tape-and-reel shipping format. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the ordering part number matches the exact manufacturer designation to avoid pinout or electrical specification mismatches during integration.

Comparators Selection Notes

Select this component when a 4-bit comparison function is required within a 2V to 6V logic environment. The HC series offers standard speed performance suitable for general-purpose digital applications. Consider the 16-TSSOP footprint for space-constrained PCB layouts. Verify that the 33ns propagation delay meets the timing constraints of your specific system clock frequencies.

Comparators Part Context

This part belongs to the Texas Instruments CD74HC family of high-speed CMOS logic devices. The 74HC85 is a standard industry-compatible 4-bit magnitude comparator. The 'CD' prefix typically denotes commercial grade temperature ranges, while 'HC' indicates high-speed CMOS technology compatible with 5V TTL levels.

Comparators Replacement Considerations

Equivalent parts include SN74HC85 variants from Texas Instruments. Other manufacturers offer compatible 74HC85 logic comparators. Verify pin compatibility and electrical specifications before substitution. Ensure the replacement supports the same 16-TSSOP package if board space is constrained.