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Nexperia USA Inc. 74AHCT1G126GV-Q10H
- Part No.:
- 74AHCT1G126GV-Q10H
- Manufacturer:
- Nexperia USA Inc.
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74AHCT1G126GV-Q10H.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SC74A
- Quantity:
- Payment:
- Shipping:
Inventory:1,026
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Product details
Overview
74AHCT1G126GV-Q10H from Nexperia is an automotive-grade single 3-state bus buffer/line driver with TTL-compatible inputs, overvoltage-tolerant inputs up to 5.5 V, operating from -40 °C to +125 °C, and packaged in SC-74A (SOT753) with 5 leads. It functions as a level-translating output driver in mixed-voltage automotive subsystems such as body control modules and infotainment interfaces.
For engineers reviewing the 74AHCT1G126GV-Q10H datasheet, 74AHCT1G126GV-Q10H pinout, 74AHCT1G126GV-Q10H application, or 74AHCT1G126GV-Q10H equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 5-pin SC-74A thermal profile, TTL input threshold compatibility at 4.5–5.5 V supply, and guaranteed 3-state disable timing under 11.5 ns at 125 °C.
Technical Context
This device implements a non-inverting 3-state buffer with active-low enable logic, where OE = L enables Y = A and OE = H forces Y into high-impedance. Its TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure direct interfacing with legacy 5 V microcontrollers and ASICs without external level shifters.
Designed for automotive signal routing, it features symmetrical output impedance (typical 25 Ω), balanced propagation delays (tpd ≤ 7.5 ns at CL = 50 pF, VCC = 5 V), and overvoltage-tolerant inputs that withstand 5.5 V regardless of VCC - enabling safe operation when driven by higher-voltage buses while powered from lower domains (e.g., 3.3 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 5.5 V - supports stable operation across automotive battery variations (e.g., cold-crank to load-dump conditions) |
| Input Logic Type | TTL-compatible - accepts standard 5 V logic thresholds without pull-ups or translation circuitry |
| Output Drive Strength | ±8 mA at VCC = 4.5 V - sufficient to drive 15 pF loads with <7.5 ns propagation delay and maintain signal integrity on PCB traces |
| 3-State Disable Time | ≤11.5 ns max at 125 °C - ensures fast bus release for time-critical arbitration in CAN/LIN peripheral interfaces |
| Operating Temperature | -40 °C to +125 °C - qualified per AEC-Q100 Grade 1 for under-hood and cabin-mounted ECUs |
| ESD Robustness | HBM >2000 V, CDM >1000 V - meets automotive ESD immunity requirements for assembly and field reliability |
| Power Dissipation | 250 mW max at 125 °C - derates linearly at 3.8 mW/K above 85 °C in SC-74A package for thermal design margin |
Pinout & Package
SC-74A (SOT753) plastic surface-mounted package: 5-terminal, leadless outline with 1.1 mm × 0.9 mm body, 0.65 mm pitch, and exposed pad not present - optimized for space-constrained automotive PCB layouts and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable (active-low) | Asserting low enables transparent data path; high places Y in high-Z - critical for shared-bus contention management |
| 2 (A) | Data Input | TTL-level input accepting 0–5.5 V; overvoltage tolerant - allows direct connection to 5 V sources even when VCC = 4.5 V |
| 3 (GND) | Ground Reference | 0 V return path for all internal logic and output drivers; must be low-inductance for noise immunity |
| 4 (Y) | 3-State Output | Non-inverting buffered output; drives bus or downstream logic only when OE = L |
| 5 (VCC) | Supply Voltage | Primary power rail (4.5–5.5 V); decoupling capacitor required within 5 mm for switching noise suppression |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient, including temperature cycling and HTOL stress |
| Overvoltage-tolerant inputs | Accepts up to 5.5 V on A and OE pins independent of VCC - eliminates need for external clamping diodes in mixed-rail systems |
| Symmetrical output impedance | ~25 Ω pull-up/pull-down - minimizes rise/fall time skew and reduces signal distortion on stubbed buses |
| Balanced propagation delays | tpd(A→Y) = tpd(OE→Y) within ±0.5 ns at 5 V - simplifies timing closure in synchronous bus architectures |
| Low dynamic power dissipation | CPD = 11 pF - limits switching current and heat generation in always-on vehicle modules |
Applications
| Body Control Module (BCM) | Instrument Cluster Interface |
|---|---|
Use Scenario: Routing sensor status signals (door open/closed, seatbelt latch) from distributed switches to central BCM MCU via shared I/O bus. IC Role / Device Role / Timing Role: 3-state buffer isolates each switch input during polling cycles; OE controlled by MCU GPIO to prevent bus contention. Use Value: Overvoltage tolerance allows direct 5 V switch inputs while BCM operates at 3.3 V, eliminating discrete level shifters and reducing BOM count. | Use Scenario: Driving segmented LED backlight lines from a 5 V display controller to multiple LED strings in analog dimming configuration. IC Role / Device Role / Timing Role: Acts as current-limited line driver with fast enable/disable to synchronize LED group activation with PWM frame timing. Use Value: Guaranteed tdis ≤11.5 ns at 125 °C ensures precise turn-off edge alignment across temperature, preventing ghosting or brightness leakage. |
| Infotainment Audio Mute Control | ADAS Camera Power Sequencing |
Use Scenario: Enabling/disabling audio amplifier mute lines based on system wake/sleep state transitions in head unit firmware. IC Role / Device Role / Timing Role: Buffer translates 3.3 V MCU GPIO to 5 V mute command; OE tied to power-good signal for hardware-initiated mute during brownout. Use Value: TTL input compatibility ensures reliable recognition of 3.3 V logic high at VCC = 5 V, avoiding false mute activation during voltage ramp-up. | Use Scenario: Controlling power-enable sequencing for multi-sensor camera module (ISP, image sensor, lens actuator) with strict voltage ramp order. IC Role / Device Role / Timing Role: Buffers enable signals from safety MCU to individual PMICs; 3-state isolation prevents backfeed during partial power-down. Use Value: AEC-Q100 qualification guarantees functional stability during engine start-stop cycles where supply dips to 4.5 V and ambient reaches 125 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT1G125GV-Q100 | Inverting output logic (Y = NOT A) vs. non-inverting in 74AHCT1G126GV-Q10H | Requires logic inversion in upstream firmware or gate-level redesign to preserve signal polarity | Select only if system architecture mandates inverted enable/control path and timing budget permits revalidation |
| SN74LVC1G126DBVR | CMOS input thresholds (VIH = 2.0 V @ VCC = 3.3 V), not TTL; max VCC = 5.5 V but not AEC-Q100 qualified | Not suitable for production automotive ECUs requiring AEC-Q100 documentation and test reports | Acceptable for prototyping or non-safety-critical aftermarket modules where qualification is not mandated |
Compared with 74AHCT1G126GV-Q10H, the 74AHCT1G125GV-Q100 requires signal polarity adaptation and offers identical automotive qualification, while SN74LVC1G126DBVR lacks AEC-Q100 validation and uses CMOS input thresholds - making it unsuitable for drop-in replacement in certified automotive designs.
Availability
74AHCT1G126GV-Q10H is available at Aetrix Electronics and suitable for automotive body electronics, instrument cluster interfaces, and ADAS sensor power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCT1G126GV-Q10H 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, miniaturization, and automotive robustness.
This part belongs to Nexperia's AEC-Q100-qualified 74AHCT logic family, engineered specifically for automotive signal integrity in harsh environments - emphasizing noise immunity, wide supply tolerance, and precise timing control in distributed electronic systems.
FAQ
Is 74AHCT1G126GV-Q10H pin-compatible with 74AHCT1G126GW-Q100?
Yes - both share identical SC-74A (SOT753) pinout: Pin 1 = OE, Pin 2 = A, Pin 3 = GND, Pin 4 = Y, Pin 5 = VCC. The 'GV' and 'GW' suffixes denote different packages (SC-74A vs. TSSOP5), but pin numbering and function mapping are fully aligned per Nexperia's ordering table and pinning diagrams.
What is the maximum capacitive load this device can drive while maintaining timing specs?
The datasheet specifies dynamic characteristics up to 50 pF load capacitance. At CL = 50 pF and VCC = 5.0 V, propagation delay is ≤7.5 ns and disable time ≤11.5 ns across -40 °C to +125 °C. Driving >50 pF may increase delays beyond guaranteed limits and require layout optimization or buffering.
Does this device support hot insertion or live bus connection?
No - while inputs are overvoltage tolerant to 5.5 V, the device lacks explicit hot-swap protection features such as slew-rate limiting or backdrive current blocking. Connecting to a live bus with pre-charged capacitance may exceed IOK clamp current limits (-±20 mA), risking latch-up or parametric shift.
Can OE be left floating in system design?
No - OE is an active-low CMOS input with no internal pull-up. Floating OE may cause indeterminate output state (partial enable or oscillation), violating bus integrity. A 10 kΩ pull-up to VCC is recommended for default high-Z operation unless actively driven by MCU or sequencer.
74AHCT1G126GV-Q10H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74A
74AHCT1G126GV-Q10H FAQ
1.How can I place an order for 74AHCT1G126GV-Q10H through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT1G126GV-Q10H 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 74AHCT1G126GV-Q10H reliable?
The price and inventory of 74AHCT1G126GV-Q10H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G126GV-Q10H is usually 5 days.
3.What payment methods are accepted for 74AHCT1G126GV-Q10H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G126GV-Q10H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT1G126GV-Q10H?
74AHCT1G126GV-Q10H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT1G126GV-Q10H 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 74AHCT1G126GV-Q10H?
For technical support, including 74AHCT1G126GV-Q10H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G126GV-Q10H requirements.
6.How does Aetrix verify that 74AHCT1G126GV-Q10H is sourced from the original manufacturer or authorized distributors?
All 74AHCT1G126GV-Q10H 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 74AHCT1G126GV-Q10H meets industry standards.
7.What is the process for return or replacement of 74AHCT1G126GV-Q10H?
All 74AHCT1G126GV-Q10H units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G126GV-Q10H, 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 74AHCT1G126GV-Q10H part is unused and in its original packaging.
Return procedure for 74AHCT1G126GV-Q10H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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