SN74HC139PWR

Overview

The SN74HC139PWR is a dual 2-line to 4-line decoder/demultiplexer from the Texas Instruments HC logic family. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range of -40°C to 85°C. The device features a typical propagation delay of 10 ns, with maximum delays reaching 44 ns at 4.5 V. It provides ±4 mA output drive capability at 5 V and incorporates two active-low enable inputs for simplified cascading or data reception.

Feature Summary

• Designed specifically for high-speed memory decoders and data-transmission systems
• Incorporates two independent enable inputs to simplify cascading and data reception
• Outputs can drive up to 10 LSTTL loads

Applications

• High-performance memory decoding
• Data-routing applications
• Data-transmission systems

Procurement Notes

Verify that the ordering suffix 'PW' corresponds to the TSSOP-16 package type as specified in the datasheet. Confirm the operational temperature grade matches the -40°C to 85°C requirement for commercial applications. Ensure the component status is listed as Active Production in the latest orderable addendum before finalizing procurement specifications.

Selection Notes

Select this component when low power consumption and wide operating voltage are required. The HC series offers fully buffered inputs representing only one normalized load to the driving circuit. Consider the specific package dimensions and thermal resistance values if multiple-input devices are used simultaneously on the same board.

Part Context

This part belongs to the SNx4HC139 family of dual decoders. Other available packages include SOIC (D), SSOP (DB), PDIP (N), and SOP (NS). The SN74HC139PWR variant specifically utilizes the TSSOP-16 package format, distinguishing it from other pin-compatible options within the same logical family.

Replacement Considerations

SN74HC139PWRG4