DESCRIPTION

· The HEF4585B is a 4-bit magnitude comparator designed to compare two 4-bit words, A and B, determining if A is greater than, equal to, or less than B.

· It features four parallel inputs for each word (A0 to A3 and B0 to B3), with A3 and B3 as the most significant bits.

· Three outputs (QA>B, QAB, IA

· It operates over a VDD range of 3 V to 15 V, with unused inputs needing connection to VDD, VSS, or another input.

FEATURES

· Fully static operation ensures stable performance.

· Parametric ratings for 5 V, 10 V, and 15 V power supplies.

· Symmetrical output characteristics for consistent behavior.

· Operates reliably from -40°C to +85°C, complying with JEDEC standard JESD 13-B.

APPLICATIONS

· Suitable for binary or monotonic code comparisons in digital systems.

· Ideal for cascading in multi-bit comparison applications without external gates.

· Used in systems requiring precise magnitude comparison of 4-bit or extended bit-length data.