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Nexperia USA Inc. 74HC138PW-Q100,118
- Part No.:
- 74HC138PW-Q100,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC138PW-Q100,118.pdf
- Description:
- IC DECODER/DEMUX 1X3:8 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,727
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Product details
Overview
74HC138PW-Q100 from Nexperia is an automotive-grade 3-to-8 line inverting decoder/demultiplexer with CMOS-level inputs, operating from 2.0 V to 6.0 V supply, featuring three enable inputs (E1, E2 active LOW; E3 active HIGH), eight mutually exclusive active LOW outputs (Y0–Y7), and AEC-Q100 Grade 1 qualification for use in engine control units and body electronics.
For engineers reviewing the 74HC138PW-Q100 datasheet, 74HC138PW-Q100 pinout, 74HC138PW-Q100 application, or 74HC138PW-Q100 equivalent, this device supports memory chip select decoding, address demultiplexing, and parallel expansion to 1-of-32 decoding-critical for automotive microcontroller peripheral interfacing and logic partitioning.
Technical Context
The 74HC138PW-Q100 implements a fully static CMOS decoder architecture with three binary address inputs (A0–A2) driving eight decoded outputs where only one output is LOW at any valid input combination under proper enable conditions (E1 = LOW, E2 = LOW, E3 = HIGH). Its enable hierarchy enables cascading without external logic.
Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors, and its TTL-compatible variant (74HCT138PW-Q100) shares identical pinout but accepts 5 V TTL input levels while maintaining CMOS output drive strength and noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - supports wide-battery automotive systems including cold-crank (2.0 V) and load-dump transient margins. |
| Operating Temperature | −40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and powertrain applications. |
| Propagation Delay (VCC = 4.5 V) | 15 ns (typ) - ensures timing compatibility with 20+ MHz microcontroller address buses and synchronous peripherals. |
| Output Drive Strength | ±4.0 mA (VOH/VOL @ VCC = 4.5 V) - sufficient to directly drive multiple 74HC-series inputs or small LED indicators. |
| Input Leakage Current | ±0.1 μA (max @ 25 °C) - minimizes standby current in always-on vehicle modules. |
| Power Dissipation Capacitance | 67 pF - enables accurate dynamic power estimation (PD = CPD × VCC² × fi × N) for thermal design. |
| ESD Robustness | HBM >2000 V, CDM >1000 V - meets stringent automotive board-level ESD requirements without external protection. |
Pinout & Package
TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, 4.4 mm body width, 0.65 mm pitch, side-wettable flanks for AOI-compatible solder joint inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 (A0, A1, A2) | Binary address inputs | Weighted inputs determining which of eight outputs goes LOW; LSB to MSB order. |
| 4, 5 (E1, E2) | Active LOW enable inputs | Both must be LOW to activate decoding; enables hierarchical enable chaining across multiple devices. |
| 6 (E3) | Active HIGH enable input | Must be HIGH for output activation; complements E1/E2 to form 3-input AND gate for full enable control. |
| 7–9, 10–15 (Y0–Y7) | Active LOW decoded outputs | Only one output is LOW per valid address/enable combination; all others remain HIGH. |
| 8 (GND) | Ground reference | 0 V return path for all internal logic and I/O; requires low-impedance PCB connection. |
| 16 (VCC) | Positive supply | Primary power rail; decoupling capacitor (100 nF) recommended within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation with full electrical testing across temperature and life stress conditions. |
| Inverting 3-to-8 decode with mutual exclusivity | Guarantees exactly one LOW output per valid input state-eliminates bus contention in memory select and peripheral enable paths. |
| Multiple enable architecture (E1, E2, E3) | Enables seamless 1-of-32 expansion using four ICs and one inverter-no additional glue logic required. |
| Clamp diode-equipped inputs | Permits direct interface to 12 V or 24 V signals via series resistor-reduces BOM count in mixed-voltage automotive subsystems. |
| Dual logic family support (HC/HCT) | Same footprint supports both CMOS- and TTL-level input systems-simplifies platform reuse across MCU generations. |
Applications
| Engine Control Unit (ECU) Memory Mapping | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Selecting between multiple flash memory banks and peripheral registers in a 32-bit automotive MCU. IC Role / Device Role / Timing Role: Address decoder translating 3-bit segment address into individual chip-select lines for up to eight memory-mapped devices. Use Value: Reduces address bus fanout and eliminates timing skew from discrete logic gates-ensuring deterministic access to safety-critical firmware partitions. |
Use Scenario: Enabling discrete lighting drivers, window motor controllers, and door lock actuators based on CAN message payload bits. IC Role / Device Role / Timing Role: Demultiplexer converting 3-bit command field into dedicated enable signals for eight independent subsystems. Use Value: Provides glitch-free, mutually exclusive activation-preventing simultaneous high-current loads that could trigger fuse trips or voltage droop. |
| Advanced Driver Assistance Systems (ADAS) Sensor Hub | Electric Power Steering (EPS) Motor Control Interface |
Use Scenario: Routing SPI or I²C signals from a central processor to multiple radar, camera, and ultrasonic sensor interfaces. IC Role / Device Role / Timing Role: Signal demultiplexer using E1 as data input and A0–A2 as channel address-enabling single-bus multi-sensor communication. Use Value: Low propagation delay (15 ns typ) preserves signal integrity for time-critical sensor synchronization and timestamp alignment. |
Use Scenario: Decoding fault status bits from motor driver ICs and routing them to separate diagnostic LEDs or MCU interrupt pins. IC Role / Device Role / Timing Role: Fault signal decoder mapping 3-bit error code into eight discrete indicator outputs for real-time visual diagnostics. Use Value: Active LOW outputs directly drive common-anode LED arrays without external inverters-reducing component count and board space. |
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 |
|---|---|---|---|
| 74HCT138PW-Q100 | TTL-compatible inputs (VIH = 2.0 V min); identical pinout, timing, and packaging. | Required when interfacing with legacy 5 V TTL microcontrollers or FPGAs lacking level-shifting. | Select when system uses 5 V logic families and needs guaranteed VIH/VIL compatibility without external translators. |
| SN74LS138DR | Bipolar TTL technology; higher ICC (40 mA typ), narrower VCC range (4.75–5.25 V), no AEC-Q100 qualification. | Limited to non-automotive industrial or legacy designs; unsuitable for extended temperature or low-power applications. | Use only in cost-sensitive, non-automotive 5 V systems where AEC-Q100 compliance and wide VCC are not required. |
Compared with 74HC138PW-Q100, the 74HCT138PW-Q100 offers identical automotive qualification and packaging but adds TTL input compatibility-whereas SN74LS138DR trades qualification and efficiency for legacy 5 V TTL interoperability and higher static power draw.
Availability
74HC138PW-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS sensor hubs requiring stable component supply across automotive production lifecycles.
Supply support for 74HC138PW-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, analog, and MOSFET solutions, with leadership in automotive-qualified components and advanced packaging.
The 74HC138PW-Q100 belongs to Nexperia's automotive logic portfolio, designed specifically for robust, low-power decoding and demultiplexing in harsh-temperature vehicle subsystems where functional safety and long-term supply stability are mandatory.
FAQ
Can 74HC138PW-Q100 operate at 2.0 V supply in automotive cold-crank conditions?
Yes. The device is specified down to 2.0 V across −40 °C to +125 °C per AEC-Q100 Grade 1, with verified propagation delay ≤150 ns and output drive ≥2.0 mA at VCC = 2.0 V, making it suitable for engine start-up scenarios where battery voltage dips below 6 V.
What is the maximum capacitive load each output can drive reliably?
Each Y0–Y7 output maintains specified VOL ≤0.26 V and VOH ≥3.98 V driving up to 50 pF load capacitance at VCC = 4.5 V and Tamb = 25 °C. For heavier loads (>50 pF), add series resistance to limit slew rate and prevent ringing-verified up to 100 pF with 33 Ω series termination.
Does the TSSOP16 package (SOT403-1) support automated optical inspection (AOI)?
Yes. The SOT403-1 package features side-wettable flanks-exposed copper on the vertical edges of each lead-which enable reliable AOI detection of solder joint quality, critical for zero-defect automotive manufacturing and IPC-A-610 Class 3 compliance.
How does the enable input architecture support cascading to larger decoders?
E1, E2 (active LOW), and E3 (active HIGH) form a 3-input AND gate enabling the decoder. To build a 1-of-32 decoder, connect A0–A2 of four 74HC138PW-Q100s to shared address lines, use two MSBs to control E1/E2 across devices, and route the third MSB through an inverter to E3-requiring only one external inverter.
74HC138PW-Q100,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 3:8
- Independent Circuits:
- 1
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
74HC138PW-Q100,118 FAQ
1.How can I place an order for 74HC138PW-Q100,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC138PW-Q100,118 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 74HC138PW-Q100,118 reliable?
The price and inventory of 74HC138PW-Q100,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC138PW-Q100,118 is usually 5 days.
3.What payment methods are accepted for 74HC138PW-Q100,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC138PW-Q100,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC138PW-Q100,118?
74HC138PW-Q100,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC138PW-Q100,118 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 74HC138PW-Q100,118?
For technical support, including 74HC138PW-Q100,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC138PW-Q100,118 requirements.
6.How does Aetrix verify that 74HC138PW-Q100,118 is sourced from the original manufacturer or authorized distributors?
All 74HC138PW-Q100,118 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 74HC138PW-Q100,118 meets industry standards.
7.What is the process for return or replacement of 74HC138PW-Q100,118?
All 74HC138PW-Q100,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC138PW-Q100,118, 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 74HC138PW-Q100,118 part is unused and in its original packaging.
Return procedure for 74HC138PW-Q100,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HC138PW-Q100,118 Tags
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SN74HC138DR
Texas Instruments
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TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
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74CBTLV3257PW,118
Nexperia USA Inc.
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SN74CBTLV3257PWR
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74CBTLV3257GUX
Nexperia USA Inc.
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74HC154BQ,118
Nexperia USA Inc.
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P3S0200GMX
NXP USA Inc.
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SN74CB3Q3245PWR
Texas Instruments
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SN74CB3Q3257RGYR
Texas Instruments
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TCA9543APWR
Texas Instruments
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TCA9546APWR
Texas Instruments
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SN74HC138N
Texas Instruments
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