SN74AHCT139DBR

Signal Switches, Multiplexers, Decoders Overview

The SN74AHCT139DBR is a dual 2-to-4-line decoder/demultiplexer from the Texas Instruments AHCT logic family. It features two independent decoders, each with two address inputs and four active-low outputs. The device operates on a single 5V supply, with a voltage range of 4.5V to 5.5V. It utilizes a 16-pin TSSOP package and supports surface-mount installation. The component ensures compatibility with standard CMOS logic while accepting TTL-level inputs. It functions within an industrial temperature range of -40°C to +85°C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Dual independent 2-to-4 line decoding architecture
• Active-low output states for precise signal selection
• TTL-compatible input thresholds for mixed-voltage systems
• High-speed switching performance in compact packaging

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in microcontroller peripheral interfaces
• Data routing in digital communication systems
• Memory chip select generation in embedded designs
• Control signal distribution in industrial automation

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix 'DBR' against official manufacturer documentation to confirm the tape-and-reel packaging configuration and pinout orientation. Ensure the AHCT logic family designation matches the system voltage requirements. Cross-reference the RoHS compliance status with current regulatory standards before finalizing procurement orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing circuits requiring dual independent decoding channels within a limited footprint. The AHCT series provides necessary speed and drive capabilities for 5V applications. Consider the TSSOP package constraints regarding thermal dissipation and PCB space availability during layout planning.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the widely adopted 74-series logic family, specifically the advanced high-speed CMOS technology with TTL-compatible inputs. It serves as a fundamental building block for digital logic design, offering reliable signal decoding functionality across various consumer and industrial electronic applications.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Compatible alternatives include the SN74AHCT139D and SN74AHCT139DR variants. Verify pin compatibility and electrical specifications before substitution.