CD4585BE

Overview

The CD4585BE is a 4-bit magnitude comparator from the Texas Instruments CD4000B CMOS logic family, housed in a 16-pin PDIP package. 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 non-inverting outputs for A < B, A = B, and A > B conditions. Propagation delays are specified as 160 ns at 15 V, 250 ns at 10 V, and 600 ns at 5 V, with a load capacitance of 50 pF. Output currents reach ±4.2 mA or ±6.8 mA depending on source data.

Feature Summary

• Performs parallel comparison of two 4-bit binary words to determine relative magnitude relationships.
• Provides active high logic outputs indicating less than, equal to, or greater than conditions.
• Supports cascading via dedicated input pins to facilitate expansion beyond four bits.

Applications

• Digital computer arithmetic logic units requiring word comparison
• Logic control systems for sequence verification
• Embedded monitoring circuits for threshold detection

Procurement Notes

Verify the specific suffix against official documentation to confirm exact electrical characteristics and packaging variations. Ensure the procurement channel provides valid traceability for the CD4585BE part number. Cross-reference datasheet revisions to confirm compatibility with current design requirements before finalizing orders.

Selection Notes

Select this component when designing systems that require robust 4-bit magnitude comparison using standard CMOS logic levels. Consider the wide operating voltage range and extended temperature specifications for industrial environments. Evaluate propagation delay constraints against system clock speeds to ensure timing compliance.

Part Context

This device belongs to the CD4585B series, which includes variants such as CD4585BEE4. These parts are standardized components within the broader CD4000B family, designed for general-purpose digital logic applications where reliable magnitude comparison is required without complex external circuitry.

Replacement Considerations

Check for CD4585BEE4 as a potential equivalent variant. Verify pinout compatibility and electrical specifications against original datasheets before substitution.

FAQ

How does the CD4585BE handle cascading for comparisons larger than 4 bits?

The device includes dedicated cascade inputs (A<B_in, A=B_in, A>B_in) that allow multiple comparators to be connected in series for expanding comparison width.

What is the output type of the CD4585BE?

The outputs are active high, providing logic high signals when the corresponding comparison condition is met.