74F521MSA

Overview

The onsemi 74F521MSA is an 8-bit identity comparator belonging to the 74F logic series. It features active low outputs indicating equality between two inputs. The device operates within a supply voltage range of 4.5 V to 5.5 V. Propagation delay is specified at 10 ns when tested at 5 V with a 50 pF load. Output drive capabilities include 1 mA high and 20 mA low currents. Static current consumption is not explicitly quantified in available data. The component is housed in a 20-SSOP package with a width of 5.30 mm.

Feature Summary

• Provides digital comparison functionality for 8-bit parallel data inputs
• Generates active low output signal specifically when input values are identical
• Utilizes bipolar transistor technology for high-speed switching performance

Applications

• Digital system address matching circuits
• Data validation logic in processing units
• Comparator functions in industrial control systems

Procurement Notes

Verify component status as obsolete before procurement planning. Confirm package dimensions match design constraints. Check for RoHS compliance variations across production batches. Ensure supply chain stability due to potential discontinuation risks associated with legacy logic families.

Selection Notes

Select this component for applications requiring fast 8-bit equality detection. Consider the 74F series speed characteristics against power consumption requirements. Verify compatibility with 5 V logic levels. Evaluate package availability given the obsolete status of the specific part number.

Part Context

This part belongs to the standard 74F logic family, known for high-speed operation using bipolar technology. It serves as a specialized digital comparator within the broader category of logic integrated circuits. The 74F series was designed for applications demanding faster propagation delays than standard TTL counterparts.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, alternative sourcing or redesign may be necessary.