74F538PC

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74F538PC is a 1-of-8 decoder/demultiplexer housed in a 20-Lead Plastic Dual-In-Line Package (PDIP). It accepts three address inputs (A0–A2) to select one of eight mutually exclusive outputs. The device features 3-STATE outputs and includes polarity control (P) for active HIGH or LOW selection. It operates within a supply voltage range of +4.5V to +5.5V and supports ambient temperatures from 0°C to +70°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Configurable output polarity via dedicated control input
• Multiple enable inputs supporting expansion to 1-of-32 decoding
• Three-state outputs for bus-compatible interfacing
• Demultiplexing capability for data routing

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in digital systems
• Data demultiplexing applications
• Bus interface circuitry requiring high impedance states
• System expansion using cascaded packages

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific package variant, as the 'PC' suffix denotes the PDIP format while 'SC' indicates SOIC. Confirm RoHS compliance status through official documentation before integration. Ensure the design accommodates the specified operating temperature range and supply voltage limits to maintain functional reliability.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a single-channel decoder with configurable polarity is required. The availability of both active HIGH and LOW enables facilitates complex expansion topologies without additional logic gates. Verify that the 3-STATE output characteristics align with the target bus system requirements.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the 74F series of high-speed logic components originally manufactured by Fairchild Semiconductor. The part functions as a standard 1-of-8 decoder, providing a reliable solution for selecting one of eight destinations based on binary address inputs. It remains a recognized standard in legacy digital design architectures.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Cross-reference with other 74F-series decoders such as the 74F138. Verify pin compatibility and electrical specifications against the datasheet. Note that the 74F538 offers unique polarity control not present in all standard equivalents.