74HCT138BQ-Q100,11

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74HCT138BQ-Q100,11 is a 3-to-8 line decoder and demultiplexer in the 74HCT logic family. It decodes three binary weighted address inputs (A0, A1, A2) to eight mutually exclusive active LOW outputs (Y0 to Y7). The device features three enable inputs: two active LOW (E1, E2) and one active HIGH (E3). It operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The component is housed in a DHVQFN16 package (SOT763-1) with dimensions of 2.5 mm x 3.5 mm x 0.85 mm.

Signal Switches, Multiplexers, Decoders Feature Summary

• Automotive qualification compliant with AEC-Q100 Grade 1 standards for robust performance in vehicle environments.
• Demultiplexing capability allows configuration as an eight-output demultiplexer using enable inputs as data strobes.
• Multiple input enable function facilitates easy parallel expansion to larger decoding configurations, such as 1-of-32 decoders.
• DHVQFN package design includes side-wettable flanks to enable automatic optical inspection of solder joints.

Signal Switches, Multiplexers, Decoders Applications

• Memory chip select decoding
• Demultiplexing signal routing
• Parallel expansion of decoding lines

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix matches the required package variant. Confirm that the automotive grade qualification aligns with project reliability requirements. Ensure the operating voltage and temperature ranges meet system specifications before finalizing procurement orders.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-compatible input levels are required alongside CMOS low power dissipation. The DHVQFN package is suitable for applications demanding compact footprints and enhanced thermal performance. Verify that the active LOW output polarity fits the downstream circuit design requirements.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74HCT138-Q100 series, which includes variants in SO16 and TSSOP16 packages. The BQ suffix specifically denotes the DHVQFN16 package type. All variants share identical logical functionality but differ in physical footprint and thermal characteristics.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include other 74HCT138-Q100 variants such as 74HCT138D-Q100 and 74HCT138PW-Q100, provided package compatibility is addressed.