CD4585BNSR

Overview

The CD4585BNSR is a CMOS 4-bit magnitude comparator from the Texas Instruments CD4585B series. It operates within a supply voltage range of 3 V to 18 V and supports an operating temperature range of -55 °C to +125 °C. The device features active-high outputs for A < B, A = B, and A > B conditions. Propagation delay varies with supply voltage: 60 ns at 15 V, 80 ns at 10 V, and up to 600 ns at 5 V under a 50 pF load. Maximum output currents are specified as -6.8 mA (high) and 6.8 mA (low). It is housed in a 16-lead SOIC package.

Feature Summary

• Performs 4-bit magnitude comparison between two binary inputs
• Provides distinct active-high logic outputs for less than, equal, and greater than relationships
• Operates across a wide industrial temperature range

Applications

• Digital arithmetic logic units
• Address decoding systems
• Data sorting circuits

Procurement Notes

Verify the specific suffix NSR indicates tape-and-reel packaging suitable for automated surface-mount assembly. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design compatibility with the specified 3 V to 18 V supply voltage limits and thermal management requirements for the SOIC-16 package.

Selection Notes

Select this component when a 4-bit digital comparison function is required in surface-mount designs. Consider the propagation delay characteristics relative to the target supply voltage. Verify that the active-high output polarity aligns with downstream logic requirements. Evaluate the wide operating temperature range against environmental constraints.

Part Context

The CD4585B belongs to the standard 4000-series CMOS logic family. This series is characterized by high noise immunity and low power consumption. The CD4585B specifically provides magnitude comparison capabilities, distinguishing it from encoders or counters within the same product line.

Replacement Considerations

The CD4585BE is a pin-compatible PDIP variant. Cross-reference datasheets to confirm identical electrical specifications and logical functionality before substitution.