SN74ACT139WBQBRQ1

Signal Switches, Multiplexers, Decoders Overview

The SN74ACT139WBQBRQ1 is an automotive-grade dual 2-to-4 decoder/demultiplexer from Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and supports a temperature range of -40°C to +125°C. The device features TTL-compatible inputs and balanced CMOS push-pull outputs capable of continuous ±24mA drive at 5V, with short burst support up to ±75mA. Propagation delays are specified at a maximum of 10.2ns. It is housed in a 16-pin WQFN (BQB) package.

Signal Switches, Multiplexers, Decoders Feature Summary

• AEC-Q100 qualified for automotive applications with defined temperature grades and ESD classifications
• TTL-compatible CMOS inputs designed for direct interfacing with standard logic devices
• Balanced CMOS push-pull outputs providing high-speed operation and strong drive capability

Signal Switches, Multiplexers, Decoders Applications

• Memory device selection with shared data bus
• Reducing required number of outputs for chip select applications
• Routing data signals

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package type, as the SN74ACT139-Q1 family includes both TSSOP and WQFN options. Confirm that the wettable flank feature is present if automatic optical inspection reliability is a requirement. Ensure the selected variant aligns with the system's thermal management capabilities and PCB layout constraints for the 16-pin form factor.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing automotive systems requiring dual independent decoding channels or demultiplexing functions. The ACT series provides faster switching speeds compared to standard AC variants while maintaining compatibility with 5V logic levels. Consider the WQFN package for space-constrained designs where improved solder joint inspection via wettable flanks is beneficial.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74ACT139-Q1 family of automotive decoders. It shares functional similarities with other members like the SN74AC139WBQBRQ1 but differs in operating voltage requirements and input threshold characteristics. The 'Q1' designation indicates qualification for automotive environments, distinguishing it from commercial grade counterparts.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74ACT139PWRQ1