SN74AHC139QPWRQ1

Signal Switches, Multiplexers, Decoders Overview

The SN74AHC139QPWRQ1 is an automotive-grade dual 2-line to 4-line decoder/demultiplexer from Texas Instruments. It operates within a supply voltage range of 2V to 5.5V and supports a junction temperature range of -40°C to +125°C. The device features a maximum propagation delay of 10.5ns at 5V with a 50pF load. It includes balanced CMOS push-pull outputs and standard CMOS inputs, housed in a 16-pin TSSOP package.

Signal Switches, Multiplexers, Decoders Feature Summary

• AEC-Q100 qualified for automotive applications
• Dual independent 2-to-4 decoding channels
• Balanced CMOS push-pull output structure
• Wettable flank option available for improved inspection

Signal Switches, Multiplexers, Decoders Applications

• Memory device selection with shared data bus
• Reducing required outputs for chip select applications
• High-performance memory system decoding
• Data routing in solid-state memory systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package type (e.g., PW for TSSOP). Confirm AEC-Q100 qualification requirements are met for the target automotive grade. Ensure input signals transition quickly to prevent oscillation and excessive power consumption. Unused inputs must be terminated to VCC or GND.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for high-speed memory decoding where minimal system delay is critical. The low propagation delay ensures decoder timing does not exceed memory access times. Verify that the capacitive load remains within specified limits to maintain performance. Consider the wettable flank feature if automated optical inspection reliability is a priority.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74AHC139-Q1 family of automotive logic devices. It provides two independent decoders in a single package, reducing board space compared to discrete solutions. The AHC series offers higher speed than standard HC logic while maintaining CMOS compatibility.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AHC139PW: Non-automotive version with identical electrical specifications but without AEC-Q100 qualification.