My Inquiry
My Account
Nexperia USA Inc. 74LVC138ABQ-Q100X
- Part No.:
- 74LVC138ABQ-Q100X
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
74LVC138ABQ-Q100X.pdf
- Description:
- IC DECODER/DEMUX 1X3:8 16DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,346
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVC138ABQ-Q100 from Nexperia is an automotive-grade 3-to-8 line decoder/demultiplexer with inverting outputs, operating across 1.2 V to 3.6 V supply, qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C), featuring three enable inputs (E1, E2 active LOW; E3 active HIGH) and Schmitt-trigger inputs for noise immunity. It decodes binary address inputs A0–A2 into eight mutually exclusive Y0–Y7 outputs and supports demultiplexing by routing data through an enable input.
For engineers reviewing the 74LVC138ABQ-Q100 datasheet, 74LVC138ABQ-Q100 pinout, 74LVC138ABQ-Q100 application, or 74LVC138ABQ-Q100 equivalent, key selection criteria include its overvoltage-tolerant 5.5 V inputs, 24 mA output drive at 3.0 V, propagation delay as low as 1.0 ns (VCC = 3.0–3.6 V), and DHVQFN16 package with side-wettable flanks for AOI-compatible solder joint inspection.
Technical Context
The device implements a standard 3-input binary decoder logic with active-LOW outputs and triple enable control: outputs go LOW only when E1 = LOW, E2 = LOW, and E3 = HIGH. Its Schmitt-trigger inputs accept slow-rising/falling signals and tolerate 5.5 V regardless of VCC, enabling direct interfacing between 3.3 V and 5 V systems without level shifters.
Functional expansion to 1-of-32 decoding is supported using four 74LVC138ABQ-Q100 ICs and one inverter, leveraging the multiple enable architecture. Output drive capability meets 50 Ω transmission line loading at 125 °C, confirming suitability for high-speed board-level signal routing in automotive ECUs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - Enables operation in ultra-low-voltage microcontroller domains and compatibility with 1.8 V/2.5 V/3.3 V logic families. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct connection to 5 V legacy peripherals without external level translation circuitry. |
| Propagation Delay (tpd) | 1.0 ns (min) at VCC = 3.0–3.6 V - Supports high-speed address decoding in real-time automotive control modules. |
| Output Drive Strength | 24 mA sink/source at VCC = 3.0 V - Sufficient to directly drive multiple CMOS/TTL loads or terminate 50 Ω lines at elevated temperature. |
| Ambient Temperature Range | −40 °C to +125 °C - Qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - Robust handling during automated assembly and field service in harsh environments. |
| Input Capacitance (CI) | 4.0 pF - Minimizes capacitive loading on upstream drivers, preserving signal integrity in dense PCB layouts. |
Pinout & Package
DHVQFN16 package (SOT763-1): 2.5 mm × 3.5 mm × 0.85 mm body, no leads, 16 terminals, side-wettable flanks for automated optical inspection of solder joints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference (0 V); thermal pad not electrically required but may be floated or tied to GND. |
| 2–3 | A1, A2 | Binary address inputs; Schmitt-triggered for noise immunity and slow-edge tolerance. |
| 4–5 | E1, E2 | Active-LOW enable inputs; both must be LOW for decode activation. |
| 6 | E3 | Active-HIGH enable input; must be HIGH for decode activation. |
| 7, 9–15 | Y7, Y5–Y0 | Inverting outputs; each goes LOW only when corresponding address is selected and all enables are satisfied. |
| 16 | VCC | Power supply; supports 1.2–3.6 V operation with CMOS low-power consumption. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from −40 °C to +125 °C ambient, including thermal cycling and humidity testing. |
| Overvoltage-tolerant inputs | Withstand up to 5.5 V regardless of VCC, eliminating need for external clamping diodes in mixed-voltage systems. |
| Multiple enable architecture | E1/E2 (active LOW) and E3 (active HIGH) allow hierarchical decoding and seamless 1-of-32 expansion with minimal external logic. |
| Schmitt-trigger inputs | Provide hysteresis (typically 0.3–0.5 V) to suppress noise on address/enable lines in electrically noisy vehicle environments. |
| DHVQFN16 with side-wettable flanks | Enables 100% automated optical inspection of solder fillets on all 16 terminals, improving manufacturing yield and reliability traceability. |
Applications
| Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Camera Interface |
|---|---|
Use Scenario: Selecting discrete power rails or sensor channels within a centralized vehicle body controller. IC Role / Device Role / Timing Role: Address decoder for enabling specific CAN/LIN transceivers, LED drivers, or window motor H-bridge controllers. Use Value: Mutually exclusive outputs prevent bus contention; overvoltage-tolerant inputs interface directly with 5 V sensor diagnostics lines. | Use Scenario: Routing high-speed image data streams from multiple camera sensors to a central vision processor. IC Role / Device Role / Timing Role: Demultiplexer converting serial control commands into parallel channel-select signals for MIPI CSI-2 lane configuration. Use Value: 1.0 ns propagation delay ensures sub-nanosecond timing alignment across camera synchronization paths. |
| Engine Control Unit (ECU) Memory Mapping | Automotive Infotainment Display Backlight Control |
Use Scenario: Decoding memory-mapped peripheral addresses in a 32-bit RISC-based engine management MCU. IC Role / Device Role / Timing Role: Chip select generator for flash, EEPROM, and analog front-end ICs sharing a common data bus. Use Value: 24 mA output drive sustains stable logic levels across long PCB traces to remote memory devices at 125 °C. | Use Scenario: Enabling individual LED backlight segments in a multi-zone LCD display driven by a 3.3 V graphics SoC. IC Role / Device Role / Timing Role: Output-enable sequencer controlling PWM dimming signals to six independent LED driver ICs. Use Value: Schmitt-trigger inputs reject EMI-induced glitches on enable lines during RF transmission events near the head unit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-to-8 decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC138APWR | Non-automotive grade (commercial −40 °C to +85 °C); identical logic, pinout, and electrical specs except AEC-Q100 qualification. | Lacks AEC-Q100 test documentation and extended temperature validation; unsuitable for safety-critical or under-hood deployment. | Select only for non-automotive industrial or consumer designs where cost sensitivity outweighs qualification requirements. |
| 74LV138PW,118 | Lower voltage range (1.0 V to 5.5 V); higher propagation delay (max 12.8 ns at 2.7 V); no Schmitt-trigger inputs. | Not suitable for mixed-voltage interfaces or noisy environments; lacks automotive qualification and side-wettable flanks. | Consider only for legacy 5 V systems where speed and noise immunity are secondary to broad supply compatibility. |
Compared with SN74LVC138APWR and 74LV138PW,118, the 74LVC138ABQ-Q100 uniquely combines AEC-Q100 Grade 1 qualification, 1.2–3.6 V operation, Schmitt-trigger inputs, and AOI-ready DHVQFN packaging-making it the sole choice for new automotive designs requiring production-grade reliability and manufacturability.
Availability
74LVC138ABQ-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, ADAS camera interfaces, and engine control units requiring stable component supply across extended temperature ranges and full AEC-Q100 compliance.
Supply support for 74LVC138ABQ-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 high-volume, high-reliability logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components and advanced packaging technologies.
The 74LVC series targets low-voltage, high-speed digital logic applications in automotive and industrial systems, emphasizing robustness, mixed-signal interoperability, and manufacturability in automated SMT lines.
FAQ
What is the maximum clock/data rate supported by the 74LVC138ABQ-Q100?
The 74LVC138ABQ-Q100 does not operate on a clock; it is combinational logic. Its maximum usable switching frequency depends on propagation delay and load. With tpd ≤ 7.5 ns (−40 °C to +125 °C, VCC = 3.0–3.6 V) and CL = 50 pF, it reliably supports address/data strobe rates up to ~100 MHz in typical automotive bus configurations.
Can the 74LVC138ABQ-Q100 be used as a demultiplexer, and how is that configured?
Yes: configure one active-LOW enable (e.g., E1) as the data input, while holding E2 LOW and E3 HIGH. Address inputs A0–A2 then steer the incoming data to one of eight outputs (Y0–Y7). This is explicitly supported in the functional description and verified in the function table (Table 3) under "demultiplexing capability".
Is the thermal pad (Pin 1) required to be soldered or grounded?
No - the exposed thermal pad (Pin 1) has no electrical function. Per datasheet Fig. 6 note (1), it may remain floating or be connected to GND if soldered, but there is no mechanical or electrical requirement to do so. Thermal performance is maintained via package conduction even without pad attachment.
Does the 74LVC138ABQ-Q100 support hot insertion or live swapping in powered systems?
No - the device lacks Ioff (power-off protection) or IOZ (three-state high-impedance on power-down) features. Inputs and outputs are not guaranteed to be high-impedance when VCC = 0 V, risking bus contention or back-powering during hot insertion. System-level isolation circuitry is required for such use cases.
74LVC138ABQ-Q100X Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 3:8
- Independent Circuits:
- 1
- Current - Output High, Low:
- 24mA, 24mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DHVQFN (2.5x3.5)
74LVC138ABQ-Q100X FAQ
1.How can I place an order for 74LVC138ABQ-Q100X through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC138ABQ-Q100X 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 74LVC138ABQ-Q100X reliable?
The price and inventory of 74LVC138ABQ-Q100X are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC138ABQ-Q100X is usually 5 days.
3.What payment methods are accepted for 74LVC138ABQ-Q100X?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC138ABQ-Q100X transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC138ABQ-Q100X?
74LVC138ABQ-Q100X orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC138ABQ-Q100X 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 74LVC138ABQ-Q100X?
For technical support, including 74LVC138ABQ-Q100X datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC138ABQ-Q100X requirements.
6.How does Aetrix verify that 74LVC138ABQ-Q100X is sourced from the original manufacturer or authorized distributors?
All 74LVC138ABQ-Q100X 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 74LVC138ABQ-Q100X meets industry standards.
7.What is the process for return or replacement of 74LVC138ABQ-Q100X?
All 74LVC138ABQ-Q100X units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC138ABQ-Q100X, 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 74LVC138ABQ-Q100X part is unused and in its original packaging.
Return procedure for 74LVC138ABQ-Q100X:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC138ABQ-Q100X Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
