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Nexperia USA Inc. 74AHCT1G126GW-Q10H
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- Part No.:
- 74AHCT1G126GW-Q10H
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHCT1G126GW-Q10H.pdf
- Description:
- IC BUF NON-INVERT 5.5V 5TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:7,928
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Product details
Overview
74AHCT1G126GW-Q10H from Nexperia is an automotive-qualified single 3-state bus buffer/line driver with TTL-compatible inputs, 2.0–5.5 V supply range, overvoltage-tolerant inputs (up to 5.5 V), and operation from –40 °C to +125 °C. It enables voltage-level translation in mixed-supply automotive subsystems such as body control modules and infotainment interface buses.
For engineers reviewing the 74AHCT1G126GW-Q10H datasheet, 74AHCT1G126GW-Q10H pinout, 74AHCT1G126GW-Q10H application, or 74AHCT1G126GW-Q10H equivalent, key selection criteria include input logic threshold compatibility (TTL), 3-state output timing (enable/disable delays ≤9.5 ns at 5 V), thermal performance in TSSOP5 package, and AEC-Q100 Grade 1 qualification for under-hood use.
Technical Context
This device implements a non-inverting 3-state buffer with active-high output enable (OE). Its TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure reliable interfacing with legacy 5 V microcontrollers and CAN transceivers. The output stage delivers symmetrical drive strength (±8 mA at VCC = 4.5 V) and balanced propagation delays (tpd ≤ 5.5 ns, ten/tdis ≤ 9.5 ns).
Designed for automotive signal routing, it supports mixed-voltage domain bridging via overvoltage-tolerant inputs (5.5 V tolerant on A and OE pins independent of VCC) and operates across full AEC-Q100 Grade 1 temperature range without derating until 74 °C in its TSSOP5 package. ESD robustness meets HBM >2000 V and CDM >1000 V per JS-001/JS-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Type | TTL-compatible input, CMOS output - interfaces directly with 5 V MCUs while driving modern low-voltage loads |
| Supply Voltage Range | 4.5 V to 5.5 V - supports stable operation across automotive battery variations (e.g., cold-crank to load-dump) |
| Propagation Delay (A→Y) | ≤5.5 ns at VCC = 5.0 V, CL = 15 pF - enables high-speed data buffering in serial peripheral interfaces |
| Enable/Disable Time | ten ≤ 9.0 ns, tdis ≤ 11.5 ns at VCC = 5.0 V, CL = 50 pF - ensures clean bus arbitration in shared-data-line architectures |
| Output Drive Strength | ±8.0 mA at VOH/VOL - sufficient to drive 15 pF loads across PCB traces and multiple gate inputs without external buffers |
| Operating Temperature | –40 °C to +125 °C - qualified for engine bay and powertrain control unit mounting locations |
| AEC-Q100 Grade | Grade 1 - certified for automotive applications requiring extended temperature reliability and lifetime validation |
Pinout & Package
TSSOP5 (SOT353-1) package: plastic thin shrink small outline, 5-lead, 1.25 mm body width, 0.65 mm pitch, exposed pad not present - optimized for automated placement and reflow in space-constrained automotive PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-high output enable | Drives Y into high-impedance when LOW; must be pulled HIGH (≥2.0 V) for functional output - critical for bus contention avoidance |
| 2 (A) | Data input | TTL-level compatible (VIH ≥ 2.0 V); overvoltage tolerant to 5.5 V - allows direct connection to 5 V logic even when VCC = 3.3 V |
| 3 (GND) | Ground reference | 0 V return path for all internal circuitry; requires low-inductance PCB connection to minimize switching noise coupling |
| 4 (Y) | 3-state buffered output | Non-inverting replica of A when OE = HIGH; high-Z when OE = LOW - enables bidirectional bus sharing |
| 5 (VCC) | Power supply | 4.5–5.5 V nominal; decoupling capacitor (100 nF ceramic) required within 3 mm for stable transient response |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use including thermal cycling, humidity testing, and lifetime reliability at 125 °C junction |
| Overvoltage-tolerant inputs | A and OE pins withstand 5.5 V regardless of VCC - eliminates level-shifters when interfacing 5 V sensors to 3.3 V domains |
| Symmetrical output impedance | Matched pull-up/pull-down resistance ensures consistent rise/fall times and reduced signal distortion |
| Balanced propagation delays | tpLH ≈ tpHL within ±0.3 ns - preserves pulse width integrity in clock distribution and timing-critical control signals |
| Low dynamic power dissipation | CPD = 11 pF - limits switching current in high-frequency enable/disable cycling common in CAN/LIN bus arbitration |
Applications
| Body Control Module (BCM) | Instrument Cluster Interface |
|---|---|
Use Scenario: Isolating LIN bus transceiver I/O from MCU GPIO during sleep mode to reduce leakage current. IC Role / Device Role / Timing Role: 3-state buffer enabling/disabling MCU-to-transceiver data path with sub-10 ns enable timing to meet LIN wakeup latency requirements. Use Value: Eliminates need for discrete MOSFET switches; overvoltage tolerance allows direct 12 V LIN line sensing without external clamping diodes. |
Use Scenario: Level-shifting SPI signals between 5 V display controller and 3.3 V graphics processor in digital dashboard. IC Role / Device Role / Timing Role: Unidirectional buffer translating 5 V SPI clock/MOSI to 3.3 V domain while maintaining setup/hold margins. Use Value: TTL input thresholds guarantee recognition of 5 V logic levels at VCC = 3.3 V; 5.5 ns propagation delay preserves SPI timing at 10 MHz. |
| Engine Control Unit (ECU) Sensor Hub | Automotive Infotainment Audio Bus |
Use Scenario: Multiplexing analog sensor outputs (e.g., pressure, temperature) onto shared ADC input lines with digital isolation. IC Role / Device Role / Timing Role: Enabling/disabling sensor signal paths using OE controlled by ECU firmware to prevent crosstalk during sampling. Use Value: High-impedance OFF-state leakage < ±10 μA prevents loading of sensitive analog sources; AEC-Q100 qualification ensures stability near engine heat sources. |
Use Scenario: Driving I²S data lines from audio SoC to multiple CODECs in head unit with simultaneous enable control. IC Role / Device Role / Timing Role: Parallel buffering of I²S bit clock and word select signals to maintain skew-controlled timing across multiple receivers. Use Value: Balanced propagation delays (<0.3 ns mismatch) preserve I²S timing relationships; 8 mA drive supports 20 cm trace lengths at 3.072 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT1G125GW-Q10H | Inverting buffer (A → Y̅); identical pinout, specs, and qualification | Required where signal polarity inversion is needed in bus arbitration logic | Select only if system design mandates inverted enable or data path behavior |
| SN74LVC1G126DBVRQ1 | Wider VCC range (1.65–5.5 V); LVC logic family; different pinout (SOT-23-5) | Supports 1.8 V/2.5 V domains but lacks AEC-Q100 Grade 1 certification | Use only in non-safety-critical cabin modules where lower voltage operation is mandatory |
Compared with 74AHCT1G126GW-Q10H, the 74AHCT1G125GW-Q10H provides functional inversion without sacrificing timing or qualification, while SN74LVC1G126DBVRQ1 trades automotive reliability for broader voltage flexibility and incompatible packaging - making the original part optimal for Grade 1-compliant 5 V bus isolation.
Availability
74AHCT1G126GW-Q10H is available at Aetrix Electronics and suitable for automotive body electronics, powertrain control units, and infotainment systems requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.
Supply support for 74AHCT1G126GW-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 logic, analog, and MOSFET solutions with focus on efficiency, reliability, and automotive-grade quality.
This device belongs to Nexperia's AEC-Q100-qualified 74AHCT logic family, engineered specifically for robust signal buffering in automotive environments where voltage translation, noise immunity, and thermal resilience are critical.
FAQ
Is 74AHCT1G126GW-Q10H pin-compatible with 74AHC1G126GW-Q100?
Yes - both share identical TSSOP5 (SOT353-1) pinout, footprint, and terminal numbering. The key distinction is input logic family: 74AHCT1G126GW-Q10H uses TTL-compatible inputs (VIH = 2.0 V min), while 74AHC1G126GW-Q100 requires CMOS-level inputs (VIH = 3.85 V min at VCC = 5.5 V). Swapping requires verifying source driver compatibility.
What is the maximum capacitive load this buffer can drive reliably?
Per datasheet dynamic characteristics, it drives up to 50 pF with guaranteed timing (tpd ≤ 7.5 ns, ten ≤ 9.0 ns at VCC = 5.0 V). For loads exceeding 50 pF, propagation and enable delays increase linearly; derating curves show tpd rises ~0.05 ns/pF above 50 pF. Layout best practices recommend minimizing trace capacitance and using series termination if driving >75 pF.
Does the device require external pull-up or pull-down resistors on OE or A pins?
No external resistors are required for functional operation. OE has no internal pull-up; it must be actively driven HIGH to enable output. A accepts TTL or CMOS logic levels and exhibits <0.1 μA input leakage. However, in floating-input scenarios (e.g., unconnected test points), a 10 kΩ pull-down on A and 10 kΩ pull-up on OE are recommended to prevent undefined states and reduce EMI susceptibility.
How does thermal derating affect power dissipation in TSSOP5 package?
In TSSOP5 (SOT353-1), total power dissipation (Ptot) is rated 250 mW at Tamb ≤ 74 °C, then derates linearly at 3.3 mW/K above that temperature. At 125 °C ambient, maximum allowable Ptot drops to ~83 mW. This is calculated from junction-to-ambient thermal resistance θJA ≈ 600 K/W - designers must verify junction temperature using actual power consumption and board copper area per Nexperia's thermal guidelines.
74AHCT1G126GW-Q10H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- 5-TSSOP
74AHCT1G126GW-Q10H FAQ
1.How can I place an order for 74AHCT1G126GW-Q10H through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT1G126GW-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 74AHCT1G126GW-Q10H reliable?
The price and inventory of 74AHCT1G126GW-Q10H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G126GW-Q10H is usually 5 days.
3.What payment methods are accepted for 74AHCT1G126GW-Q10H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G126GW-Q10H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT1G126GW-Q10H?
74AHCT1G126GW-Q10H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT1G126GW-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 74AHCT1G126GW-Q10H?
For technical support, including 74AHCT1G126GW-Q10H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G126GW-Q10H requirements.
6.How does Aetrix verify that 74AHCT1G126GW-Q10H is sourced from the original manufacturer or authorized distributors?
All 74AHCT1G126GW-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 74AHCT1G126GW-Q10H meets industry standards.
7.What is the process for return or replacement of 74AHCT1G126GW-Q10H?
All 74AHCT1G126GW-Q10H units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G126GW-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 74AHCT1G126GW-Q10H part is unused and in its original packaging.
Return procedure for 74AHCT1G126GW-Q10H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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