74HCT138FPEL-E

Signal Switches, Multiplexers, Decoders Overview

The 74HCT138FPEL-E is a high-speed silicon-gate CMOS decoder/demultiplexer manufactured by Renesas Electronics Corporation. It accepts three binary weighted address inputs (A0, A1, and A2) and provides eight mutually exclusive active-low outputs (Y0 to Y7). The device features three enable inputs: two active-low (E1 and E2) and one active-high (E3). Outputs remain high unless E1 and E2 are low and E3 is high. This configuration allows for simple parallel expansion into larger decoders or use as an 8-output demultiplexer.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides eight mutually exclusive active-low outputs based on three binary weighted address inputs
• Features three independent enable inputs allowing flexible system integration and expansion
• Compatible with Low Power Schottky TTL (LSTTL) logic levels for direct interface

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in microprocessor-based systems
• Demultiplexing data streams in digital communication circuits
• Expanding I/O capabilities in embedded control systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'FPEL' against official Renesas documentation to confirm package type and tape/reel specifications. Ensure the component meets required RoHS compliance standards for your application. Cross-reference the datasheet revision date to confirm electrical characteristics match your design requirements before finalizing procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing systems requiring LSTTL-compatible logic levels with CMOS power efficiency. It is suitable for applications needing multiple mutually exclusive output lines controlled by a 3-bit address bus. Consider the package constraints and thermal requirements associated with the PEL format during PCB layout.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the standard 74HCT series of logic devices, widely used in general-purpose digital electronics. The HCT designation indicates compatibility with HC logic but driven by TTL voltage levels. Renesas produces this family to support legacy designs while offering modern manufacturing reliability and performance standards for industrial and consumer applications.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for pin-compatible alternatives from other manufacturers such as NXP or STMicroelectronics that offer the same 74HCT138 functionality. Verify that any substitute maintains identical enable logic polarity and output drive strength to ensure seamless integration without circuit modification.