SN74AC238WBQBRQ1

Signal Switches, Multiplexers, Decoders Overview

The SN74AC238WBQBRQ1 is an automotive-grade 3-line to 8-line decoder and demultiplexer from Texas Instruments. It operates within a supply voltage range of 1.5V to 6V and supports an operating temperature range of -40°C to +125°C. The device features non-inverted outputs with a maximum propagation delay of 10ns at 5V. It provides continuous output drive currents of ±24mA at 5V, supporting up to ±75mA in short bursts. The component is housed in a 16-pin WQFN package.

Signal Switches, Multiplexers, Decoders Feature Summary

• AEC-Q100 qualified for automotive applications with specified temperature grades and ESD classifications.
• Available in a wettable flank QFN package to facilitate automatic optical inspection.
• Wide operating voltage range from 1.5V to 6V with inputs accepting voltages up to 6V.

Signal Switches, Multiplexers, Decoders Applications

• Memory device selection with shared data bus
• Reduce required number of outputs for chip select applications
• Route data

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package type, as the SN74AC238-Q1 family includes both TSSOP and WQFN options. Confirm that the wettable flank feature is present if automated optical inspection compatibility is required. Ensure the selected variant meets the specific voltage and temperature requirements for the target automotive application environment.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a high-speed CMOS decoder is needed for memory addressing or data routing in automotive systems. The wide voltage range allows flexibility in system design across different logic levels. Consider the thermal characteristics of the WQFN package for PCB layout optimization. Verify input transition rates to prevent excessive power consumption or oscillations during operation.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the SN74AC238-Q1 series of automotive decoders. It functions as a single 3-to-8 decoder with three strobe inputs for cascading or demultiplexing control. The device utilizes balanced CMOS push-pull outputs and standard CMOS inputs. It is designed to replace legacy decoding solutions with higher speed and lower power consumption capabilities suitable for modern vehicle electronics.

Signal Switches, Multiplexers, Decoders Replacement Considerations

SN74AC238PWRQ1 (TSSOP-16 package)