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Nexperia USA Inc. 74AHCT257D-Q100J
- Part No.:
- 74AHCT257D-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74AHCT257D-Q100J.pdf
- Description:
- IC MULTIPLEXER 4 X 2:1 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,512
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Product details
Overview
74AHCT257D-Q100 from Nexperia is an automotive-qualified quad 2-input multiplexer with 3-state outputs, TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max), overvoltage-tolerant inputs up to 5.5 V, and operation from −40 °C to +125 °C. It serves as a voltage-level translating data selector in body control modules, instrument clusters, and ADAS sensor interface logic.
For engineers reviewing the 74AHCT257D-Q100 datasheet, 74AHCT257D-Q100 pinout, 74AHCT257D-Q100 application, or 74AHCT257D-Q100 equivalent, key selection considerations include its AEC-Q100 Grade 1 qualification, 3.94 V VOH at 4.5 V supply and −8 mA load, 3.2 ns typical propagation delay (VCC = 5.0 V, CL = 15 pF), and SO16 package compatibility with legacy PCB footprints.
Technical Context
This device implements four independent 2:1 multiplexers sharing a common select line (S) and active-low 3-state output enable (OE). Each channel routes either I0 or I1 to Y based on S, with Schmitt-trigger inputs ensuring noise immunity in noisy automotive environments.
All outputs enter high-impedance state when OE is HIGH; no internal pull-ups or latches are present. Input overvoltage tolerance enables safe interfacing between 3.3 V controllers and 5 V subsystems without external level-shifting components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Matches standard 5 V automotive rail; supports robust operation under load dump transients. |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - TTL-compatible logic levels ensure interoperability with legacy microcontrollers and discrete drivers. |
| Propagation Delay | 3.7 ns typ (nI→Y), 5.1 ns typ (S→Y) at VCC = 5.0 V, CL = 15 pF - Enables reliable timing in sub-100 MHz digital control paths. |
| Output Drive | VOH = 3.94 V min at −8 mA, VOL = 0.36 V max at 8 mA - Sustains clean logic levels driving multiple CMOS loads or short PCB traces. |
| Operating Temperature | −40 °C to +125 °C - Qualified for engine bay and powertrain ECU placement per AEC-Q100 Grade 1 requirements. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - Meets automotive assembly and handling robustness standards without additional protection circuitry. |
| Power Dissipation | ICC = 4.0 μA typ at VCC = 5.5 V - Ultra-low static current reduces system standby power in always-on domains. |
Pinout & Package
74AHCT257D-Q100 uses the SO16 plastic small outline package (SOT109-1), 16-pin, 3.9 mm body width, with standard 1.27 mm lead pitch and gull-wing leads compatible with reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (S) | Common data select input | Single control line selecting I0 or I1 for all four channels simultaneously; Schmitt-triggered for noise rejection. |
| 2 (1I0), 3 (1I1), 5 (2I0), 6 (2I1), 10 (3I1), 11 (3I0), 13 (4I1), 14 (4I0) | Data inputs | Eight total inputs grouped as four pairs; each pair feeds one multiplexer; overvoltage tolerant to 5.5 V. |
| 4 (1Y), 7 (2Y), 9 (3Y), 12 (4Y) | Multiplexer outputs | Four independent 3-state outputs; driven LOW/HIGH or placed in high-Z when OE = HIGH. |
| 8 (GND), 16 (VCC) | Power rails | Single-supply operation; decoupling capacitor required near VCC–GND pins to suppress switching noise. |
| 15 (OE) | Output enable (active LOW) | Asynchronous control enabling/disabling all outputs; used for bus arbitration or power gating in multi-device systems. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40 °C to +125 °C operation with full reliability testing - eliminates need for additional automotive qualification effort. |
| Overvoltage-tolerant inputs | Withstand up to 5.5 V regardless of VCC - enables direct connection to 5 V buses while powered from 3.3 V, reducing BOM count. |
| Non-inverting data path | No signal polarity inversion between input and output - simplifies timing analysis and avoids unintended logic inversions in control paths. |
| Schmitt-trigger inputs | Hysteresis ≥ 0.3 V typical - rejects fast EMI transients and slow-rising signals common in automotive harnesses and switch interfaces. |
| CMOS low-power dissipation | ICC ≤ 80 μA max across full temperature range - minimizes self-heating and supports thermally constrained module designs. |
Applications
| Body Control Module (BCM) | Instrument Cluster Display Interface |
|---|---|
|
Use Scenario: Selecting between multiple sensor inputs (e.g., door lock status, window position, mirror fold command) before routing to MCU GPIO. IC Role / Device Role / Timing Role: Quad 2:1 data selector consolidating four independent control signals onto shared MCU input lines with minimal latency. Use Value: Reduces MCU pin count by 4 while maintaining deterministic 5.1 ns max S→Y propagation - critical for real-time response to safety-critical inputs. |
Use Scenario: Multiplexing backlight dimming PWM signals from two different display controllers to drive a single LED string driver IC. IC Role / Device Role / Timing Role: Level-translating signal router enabling 3.3 V controller PWM to drive 5 V LED driver inputs without external translators. Use Value: Overvoltage-tolerant inputs accept 5 V PWM directly; 3.94 V VOH ensures reliable triggering of downstream 5 V logic thresholds. |
| Rear Camera Video Switching | ADAS Sensor Data Aggregation |
|
Use Scenario: Switching between front/rear camera video sync signals (HS/VS) prior to image processor input, controlled by vehicle gear position. IC Role / Device Role / Timing Role: Low-skew multiplexer preserving edge integrity of 27 MHz pixel clock derivatives with <12.5 ns max tpd variation across channels. Use Value: Balanced propagation delays (±0.5 ns typical matching) prevent inter-channel skew that could cause frame misalignment or tearing. |
Use Scenario: Consolidating diagnostic alert lines from four radar modules into a single CAN transceiver interrupt pin on the domain controller. IC Role / Device Role / Timing Role: 3-state output aggregator enabling software-controlled isolation of individual radar alerts without hardware redesign. Use Value: Active-low OE allows MCU to disable all outputs during fault recovery; high-Z state prevents bus contention on shared interrupt line. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT257PW-Q100 | TSSOP16 package (4.4 mm width); 15% smaller footprint; 8.5 mW/K thermal derating above 91 °C vs. 12.4 mW/K for SO16 | Better suited for space-constrained modules; requires updated stencil and reflow profile due to finer pitch | Select when board area is limited and thermal margin permits lower Ptot derating slope |
| SN74AHCT257QPWRQ1 | Texas Instruments part; identical logic function and AEC-Q100 Grade 1 rating; VIH/VIL specs match within 0.1 V | Same pinout but different thermal pad layout; TI's characterization includes extended life test data beyond Nexperia's published spec | Choose for dual-sourcing strategy where TI's long-term availability commitments align with program roadmap |
Compared with 74AHCT257D-Q100, the PW variant trades thermal robustness for compactness, while the TI alternative offers identical electrical behavior with divergent reliability reporting-neither is pin-compatible without layout revision due to differing package outlines and thermal pad requirements.
Availability
74AHCT257D-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, instrument cluster interfaces, rear-view camera systems, and ADAS sensor aggregation requiring stable component supply across extended product lifecycles.
Supply support for 74AHCT257D-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, analog, and MOSFET solutions optimized for automotive, industrial, and mobile applications.
This device belongs to Nexperia's AEC-Q100-qualified logic portfolio, engineered specifically for automotive signal routing where reliability, noise immunity, and mixed-voltage interoperability are mandatory.
FAQ
Can 74AHCT257D-Q100 operate with a 3.3 V supply?
No. The 74AHCT257D-Q100 is TTL-input compatible and specified only for VCC = 4.5 V to 5.5 V. Its VIH minimum is 2.0 V, but internal circuitry requires ≥4.5 V for guaranteed output drive strength and timing compliance. For 3.3 V systems, use the 74AHC257D-Q100 variant instead.
What is the maximum capacitive load this device can drive reliably?
The datasheet specifies dynamic performance up to CL = 50 pF with guaranteed tpd and skew. Driving >50 pF may increase propagation delay beyond 13.5 ns max and degrade edge rates; for heavier loads, add a buffer stage or reduce trace length and parallel capacitance.
Does the 3-state output support hot insertion or live bus swapping?
No. While OE controls output impedance, the device lacks bus-hold or power-up/down protection features. Hot insertion risks latch-up or ESD damage if VCC is not sequenced before applying input signals; always power VCC before asserting any inputs or OE.
How does overvoltage tolerance work on the inputs?
Inputs tolerate up to 5.5 V regardless of VCC because internal clamping diodes route excess voltage to VCC or GND. This requires VCC to be present and stable; if VCC = 0 V, the 5.5 V limit no longer applies and absolute maximum ratings must be observed strictly.
74AHCT257D-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Multiplexer
- Circuit:
- 4 x 2:1
- Independent Circuits:
- 1
- Current - Output High, Low:
- 8mA, 8mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
74AHCT257D-Q100J FAQ
1.How can I place an order for 74AHCT257D-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT257D-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 74AHCT257D-Q100J reliable?
The price and inventory of 74AHCT257D-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT257D-Q100J is usually 5 days.
3.What payment methods are accepted for 74AHCT257D-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT257D-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT257D-Q100J?
74AHCT257D-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT257D-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 74AHCT257D-Q100J?
For technical support, including 74AHCT257D-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT257D-Q100J requirements.
6.How does Aetrix verify that 74AHCT257D-Q100J is sourced from the original manufacturer or authorized distributors?
All 74AHCT257D-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 74AHCT257D-Q100J meets industry standards.
7.What is the process for return or replacement of 74AHCT257D-Q100J?
All 74AHCT257D-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT257D-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 74AHCT257D-Q100J part is unused and in its original packaging.
Return procedure for 74AHCT257D-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHCT257D-Q100J Tags
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SN74HC138DR
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TC7SB3157CFU,LF(CT
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74CBTLV3257PW,118
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TCA9546APWR
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SN74HC138N
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