74HC138D-Q100HL

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74HC138D-Q100HL is an automotive-grade 3-to-8 line decoder and demultiplexer. 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). Qualified to AEC-Q100 Grade 1 standards, it operates within a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C. It utilizes CMOS technology for low power dissipation and high noise immunity.

Signal Switches, Multiplexers, Decoders Feature Summary

• Automotive qualification in accordance with AEC-Q100 Grade 1 standards
• Demultiplexing capability using active LOW enable inputs as data strobes
• Multiple input enable configuration allowing easy parallel expansion to larger decoding systems
• Inputs include clamp diodes enabling interface to voltages exceeding VCC via current limiting resistors

Signal Switches, Multiplexers, Decoders Applications

• Memory chip select decoding
• Automotive engine control units
• Body control modules
• Transmission control units

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix 'HL' against official Nexperia documentation, as standard datasheets list 'D', 'PW', or 'BQ' variants. Confirm that the requested package matches the SO16 (SOT109-1) outline specified for the 'D' series. Ensure the component meets the required AEC-Q100 Grade 1 reliability specifications for the intended automotive application environment.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when designing circuits requiring robust 3-to-8 decoding in harsh automotive environments. The HC logic family provides compatibility with CMOS levels across a wide voltage range. Consider the HCT variant if TTL level inputs are required instead. Verify that the thermal performance of the SO16 package meets the system's power dissipation requirements at maximum operating temperatures.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Nexperia 74HC_HCT138_Q100 family of 3-to-8 line decoders and demultiplexers. The family includes variants such as 74HCT138D-Q100J and 74HC138PW-Q100J. These devices share identical functional descriptions but differ in logic families (HC vs HCT), package types (SO16, TSSOP16, DHVQFN16), and specific ordering suffixes indicating manufacturing details.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Direct substitutes include other 74HC138-Q100 variants from Nexperia, such as 74HC138PW-Q100J (TSSOP16) or 74HC138BQ-Q100J (DHVQFN16), provided the package footprint is compatible. Cross-manufacturer replacements must match the 3-to-8 decoder functionality, AEC-Q100 Grade 1 qualification, and pinout configuration.