SN74HC139QPWRQ1

Overview

The SN74HC139QPWRQ1 is an automotive-grade dual 2-line to 4-line decoder/demultiplexer from Texas Instruments, belonging to the HC logic series. It operates within a supply voltage range of 2 V to 6 V and supports a maximum propagation delay of 44 ns. The device features two independent decoding circuits in a 16-pin TSSOP package. It is qualified under AEC-Q100 standards for automotive applications and functions reliably across an extended temperature range from -40°C to +125°C.

Feature Summary

• Dual independent 2-to-4 line decoding or demultiplexing functionality
• Automotive qualification compliant with AEC-Q100 standards
• Extended industrial operating temperature range up to 125°C

Applications

• Automotive electronic control unit signal routing
• Vehicle body electronics address decoding
• Industrial automation system configuration

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm exact packaging and tape-and-reel specifications. Ensure the component meets AEC-Q100 reliability requirements for the intended automotive environment. Cross-reference the datasheet revision date to validate parameter accuracy before integration into final designs.

Selection Notes

Select this component when dual low-side switching or address decoding is required in space-constrained automotive designs. The HC series offers standard CMOS performance suitable for general-purpose logic interfacing. Consider the TSSOP package dimensions for PCB layout constraints and thermal management requirements during the initial schematic capture phase.

Part Context

This part belongs to the SN74HC139 family of decoders. The Q1 suffix indicates automotive grade qualification, distinguishing it from commercial variants. It provides a robust solution for managing multiple output lines using minimal input pins in complex vehicle networks.

Replacement Considerations

SN74HC139PW: Commercial grade equivalent without automotive qualification.