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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

Nexperia USA Inc. 74LV138D-Q100J

Name: 74LV138D-Q100J
Brand: Nexperia USA Inc.
SKU: 74LV138D-Q100J
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LV138D-Q100J

Manufacturer:: Nexperia USA Inc.

Category:: Signal Switches, Multiplexers, Decoders

Package:: -

Datasheet:: 74LV138D-Q100J.pdf

Description:: 74LV138D-Q100/SOT109/SO16

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74LV138D-Q100 from Nexperia is an automotive-qualified 3-to-8 line inverting decoder/demultiplexer with three active-LOW enable inputs (E1, E2) and one active-HIGH enable input (E3), operating across 1.0 V to 5.5 V supply, delivering <12 ns propagation delay at 3.3 V, and featuring AEC-Q100 Grade 1 qualification for under-hood automotive control modules.

For engineers reviewing the 74LV138D-Q100 datasheet, 74LV138D-Q100 pinout, 74LV138D-Q100 application, or 74LV138D-Q100 equivalent, key selection considerations include its dual enable logic architecture, -40 °C to +125 °C operation, SO16 package footprint, and compatibility with 1.0 V–3.6 V low-voltage microcontroller address buses.

Technical Context

The device implements a standard 3-input binary decoder with fully decoded active-LOW outputs (Y0–Y7), where output activation requires E1 = LOW, E2 = LOW, and E3 = HIGH simultaneously. Its functional table confirms strict mutual exclusivity: only one output goes LOW per valid address combination.

Input clamping diodes enable safe interfacing with voltages exceeding VCC when used with current-limiting resistors, and the CMOS design ensures TTL-level compatibility while maintaining sub-100 μA ICC at 5.5 V and 25 °C - critical for always-on automotive subsystems.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.0 V to 5.5 V - supports direct interface with 1.2 V, 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters.
Propagation Delay (t_pd)	12 ns typical at V_CC = 3.3 V, C_L = 15 pF - enables reliable decoding in high-speed address demux paths for flash memory or peripheral selection.
Operating Temperature	-40 °C to +125 °C - qualified for engine control units (ECUs), transmission control modules, and ADAS sensor hubs requiring extended thermal range.
Output Drive Strength	6 mA sink at V_CC = 3.0 V, VOL ≤ 0.4 V - sufficient to directly drive LED indicators, small-signal MOSFET gates, or enable lines of downstream ICs.
AEC-Q100 Grade	Grade 1 - certified for automotive applications per AEC-Q100 Rev G, including latch-up immunity >100 mA and HBM ESD >2000 V.
Power Dissipation	500 mW max at T_amb ≤ 110 °C - derates linearly above 110 °C (12.4 mW/K), supporting compact PCB layouts in thermally constrained modules.

Pinout & Package

74LV138D-Q100 uses the SOT109-1 (SO16) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3 (A0, A1, A2)	Binary address inputs	Accept 3-bit address to select one of eight mutually exclusive outputs; compatible with 1.0 V–5.5 V logic thresholds.
4, 5 (E1, E2)	Active-LOW enable inputs	Both must be LOW to activate decoding; enables hierarchical expansion with upstream logic or other decoders.
6 (E3)	Active-HIGH enable input	Must be HIGH to enable outputs; allows flexible gating with system enable signals or microcontroller GPIOs.
7–9, 10–15 (Y7–Y0)	Inverting decoded outputs	Each output goes LOW when selected; active-LOW signaling simplifies connection to chip-select (/CS) pins of memory or peripherals.
8 (GND)	Ground reference	0 V return path for all internal circuitry and I/O; must be low-impedance for stable switching noise margin.
16 (V_CC)	Positive supply	Single-supply rail powering core logic and output drivers; supports wide voltage range without external regulators.

Key Features

Feature	Design Value
Automotive qualification	AEC-Q100 Grade 1 certified - validated for continuous operation in harsh automotive environments including thermal cycling and vibration.
Multi-enable expansion	Three independent enables (E1, E2, E3) allow cascading up to 1-of-32 decoding using four ICs and one inverter - no external glue logic required.
Low-voltage optimization	Guaranteed functionality down to V_CC = 1.0 V - supports ultra-low-power modes in battery-backed systems and start-stop ECUs.
Input clamp protection	Integrated input clamp diodes permit safe overvoltage tolerance (up to V_CC + 0.5 V) with external current limiting - eliminates need for discrete protection components.
Demultiplexing capability	One enable input (e.g., E1) can serve as data input while others act as strobes - converts decoder into 1-to-8 demux for serial-to-parallel signal routing.

Applications

Engine Control Unit (ECU)

Advanced Driver Assistance Systems (ADAS)

Use Scenario: Address decoding for multiple CAN transceivers, LIN controllers, and analog sensor interfaces within a single ECU housing.

IC Role / Device Role / Timing Role: 3-to-8 decoder selecting /CS lines of peripheral ICs based on MCU address bus bits A0–A2.

Use Value: Reduces MCU GPIO count by replacing discrete enable lines with shared address decoding, saving board space and firmware complexity.

Use Scenario: Selecting between multiple radar preprocessing ASICs or camera image signal processors in a centralized domain controller.

IC Role / Device Role / Timing Role: Demultiplexer routing a common configuration clock or reset signal to one of eight sensor processing units.

Use Value: Enables time-multiplexed calibration sequences across sensors using a single control line and precise timing via propagation delay <12 ns.

Body Control Module (BCM)

Infotainment Head Unit

Use Scenario: Driving discrete LED status indicators and relay drivers for door lock, window, and lighting functions.

IC Role / Device Role / Timing Role: Inverting decoder converting 3-bit microcontroller output into eight independent active-LOW enable signals.

Use Value: Eliminates need for external inverters or pull-up resistors due to native active-LOW outputs compatible with common cathode LED arrays.

Use Scenario: Memory mapping for multi-bank NOR/NAND flash used in firmware storage, map updates, and audio buffer partitioning.

IC Role / Device Role / Timing Role: Chip-select decoder generating /CS signals for up to eight flash memory devices sharing a common data/address bus.

Use Value: Ensures deterministic access timing (t_pd ≤ 26 ns at 2.0 V) and avoids bus contention during firmware boot and OTA update operations.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-to-8 decoder applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LV138AQPWRQ1	TI variant with identical pinout and AEC-Q100 Grade 1, but wider V_CC range (1.65 V–5.5 V); lacks 1.0 V–1.65 V support.	Not suitable for sub-1.65 V ultra-low-power sleep modes; otherwise drop-in for 1.8 V/3.3 V/5 V systems.	Select if sourcing TI-qualified supply chain is required and operation below 1.65 V is unnecessary.
74LVC138PW-Q100	Nexperia LVC variant: same function but higher speed (t_pd = 5.1 ns @ 3.3 V), tighter VOH/VOL specs, and narrower V_CC range (1.65 V–3.6 V).	Cannot operate at 1.0 V–1.65 V or 4.5 V–5.5 V; optimized for 3.3 V high-speed digital subsystems only.	Choose when maximum decoding speed is critical and supply is strictly regulated at 3.3 V.

Compared with SN74LV138AQPWRQ1 and 74LVC138PW-Q100, the 74LV138D-Q100 uniquely supports full 1.0 V–5.5 V operation - enabling single-part compatibility across legacy 5 V, modern 3.3 V, and emerging ultra-low-power 1.2 V automotive subsystems without redesign.

Availability

74LV138D-Q100 is available at Aetrix Electronics and suitable for automotive engine control units, ADAS domain controllers, and body electronics requiring stable component supply across extended temperature and voltage ranges.

Supply support for 74LV138D-Q100 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, power, analog, and RF components for automotive, industrial, and consumer markets.

The 74LV138D-Q100 belongs to Nexperia's automotive-qualified LV logic family, designed specifically for robust, low-voltage decoding in safety-critical vehicle subsystems where reliability across extreme thermal and electrical conditions is mandatory.

FAQ

Is the 74LV138D-Q100 pin-compatible with non-automotive 74LV138 variants?

Yes - the 74LV138D-Q100 shares identical pinout, electrical behavior, and functional logic with standard 74LV138 devices in SO16 (SOT109-1) package. However, it adds AEC-Q100 Grade 1 qualification, extended -40 °C to +125 °C operation, and enhanced ESD/latch-up performance not guaranteed in commercial-grade versions.

Can the 74LV138D-Q100 be used as a demultiplexer?

Yes - by applying a data signal to one enable input (e.g., E1) and using A0–A2 plus the remaining enables (E2, E3) as address/strobe controls, the device routes the input to exactly one of eight active-LOW outputs. This is explicitly supported in the datasheet's functional description and requires no external components.

What is the minimum supply voltage for guaranteed operation?

The 74LV138D-Q100 is specified to operate down to 1.0 V, with static characteristics guaranteed from 1.2 V, and full functionality confirmed at 1.0 V when inputs are driven to GND or VCC. This enables use in battery-backed or energy-harvesting automotive subsystems where supply may dip below 1.2 V.

Does the device require external pull-up or pull-down resistors on inputs or outputs?

No - inputs have built-in clamp diodes and standard CMOS thresholds; outputs are push-pull and actively drive HIGH or LOW. Pull-ups are unnecessary unless interfacing with open-drain systems. The datasheet confirms direct TTL/CMOS compatibility and specifies no external biasing requirements for normal operation.

74LV138D-Q100J Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: -

Circuit:: -

Independent Circuits:: -

Current - Output High, Low:: -

Voltage Supply Source:: -

Voltage - Supply:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

74LV138D-Q100J FAQ

1.How can I place an order for 74LV138D-Q100J through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LV138D-Q100J on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74LV138D-Q100J reliable?

The price and inventory of 74LV138D-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LV138D-Q100J is usually 5 days.

3.What payment methods are accepted for 74LV138D-Q100J?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LV138D-Q100J transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LV138D-Q100J?

74LV138D-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LV138D-Q100J order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74LV138D-Q100J?

For technical support, including 74LV138D-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LV138D-Q100J requirements.

6.How does Aetrix verify that 74LV138D-Q100J is sourced from the original manufacturer or authorized distributors?

All 74LV138D-Q100J products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74LV138D-Q100J meets industry standards.

7.What is the process for return or replacement of 74LV138D-Q100J?

All 74LV138D-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74LV138D-Q100J, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74LV138D-Q100J part is unused and in its original packaging.

Return procedure for 74LV138D-Q100J:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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