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Diodes Incorporated 74AHC1G126QSE-7
- Part No.:
- 74AHC1G126QSE-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHC1G126QSE-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:5,470
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Product details
Overview
74AHC1G126QSE-7 from Diodes Incorporated is an automotive-grade single non-inverting buffer with 3-state output, designed for bidirectional bus isolation and level translation in AEC-Q100 Grade 1 systems. It operates across 2.0V–5.5V supply, delivers ±8mA drive at 4.5V, features Schmitt-trigger inputs for noise immunity, and supports -40°C to +125°C ambient operation in SOT353 packaging.
For engineers reviewing the 74AHC1G126QSE-7 datasheet, 74AHC1G126QSE-7 pinout, 74AHC1G126QSE-7 application, or 74AHC1G126QSE-7 equivalent, key selection criteria include 3-state enable timing (tEN ≤ 6.9ns @ 5V/50pF), propagation delay (tPD ≤ 3.4ns typ @ 5V), input voltage tolerance beyond VCC, and AEC-Q100 qualification for automotive signal routing.
Technical Context
This device implements a CMOS-based non-inverting buffer with active-low 3-state control (OE), enabling precise bus contention management in mixed-voltage domains. Its Schmitt-trigger inputs accept slow-rising signals without oscillation, while balanced high/low drive capability ensures clean logic transitions under load.
The 74AHC1G126QSE-7 uses standard AHC logic thresholds (VIH = 3.85V min @ VCC = 5.5V; VIL = 1.65V max), maintains <0.1V VOL at 8mA sink, and exhibits low ICC (≤40μA max) across its full temperature range - critical for always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 5.5V - enables interoperability between 2.5V, 3.3V, and 5V logic domains without level shifters |
| Output Drive Strength | ±8mA @ 4.5V - sufficient to drive 50pF loads with <9.5ns propagation delay in automotive temperature range |
| Propagation Delay (tPD) | 3.4ns typ @ 5V/15pF - supports >100MHz data rates in short-bus applications like sensor interface backplanes |
| 3-State Enable Time (tEN) | 3.6ns typ @ 5V/15pF - ensures fast bus release for time-critical arbitration protocols |
| Operating Temperature | -40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for engine bay and ADAS ECU placement |
| Input Voltage Tolerance | Inputs not limited by VCC - allows safe interfacing with higher-voltage signals up to 6.5V without clamping diodes |
| ESD Robustness | 2000V HBM, 1000V CDM - exceeds AEC-Q100-002/-011 for assembly-line reliability in automotive manufacturing |
Pinout & Package
SOT353 (2.15mm × 2.1mm × 1.1mm, 0.65mm pitch) - ultra-compact 5-pin package optimized for space-constrained automotive PCBs with IATF 16949-compliant assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | Non-inverting logic input; accepts Schmitt-triggered signals for robust noise margin in noisy vehicle environments |
| 2 (OE) | Output Enable (Active-Low) | Drives output Y to high-impedance state when LOW; enables shared-bus arbitration without external pull-ups |
| 3 (Y) | Data Output | 3-state buffered output; sinks or sources up to 8mA while maintaining rail-to-rail swing |
| 4 (GND) | Ground Reference | Primary return path for logic and output current; requires low-inductance connection to minimize ground bounce |
| 5 (VCC) | Power Supply | CMOS supply rail; decoupling capacitor (100nF) required within 3mm for stable switching performance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualification | Validated for -40°C to +125°C operation with PPAP documentation support - suitable for powertrain and chassis control units |
| Schmitt-Trigger Inputs | Input hysteresis ≥0.3V typical - eliminates false triggering from EMI-induced edge jitter on CAN/LIN stub lines |
| Wide-Voltage Operation | 2.0V–5.5V supply range - permits direct integration into legacy 5V microcontroller buses and modern 3.3V SoC interfaces |
| Low Power Consumption | ICC ≤ 40μA max @ 125°C - reduces thermal load in sealed junction boxes and enables always-on diagnostic monitoring |
| High ESD Immunity | 2kV HBM / 1kV CDM - protects against electrostatic discharge during automated PCB handling and field service |
Applications
| Automotive Body Control Module | Industrial PLC I/O Expansion |
|---|---|
|
Use Scenario: Isolating LIN bus transceiver outputs from MCU GPIO pins in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional 3-state buffer enabling MCU to share LIN TX/RX lines with multiple sensors while preventing bus contention. Use Value: Eliminates need for discrete MOSFET switches; Schmitt inputs tolerate LIN's slow slew rate; AEC-Q100 rating ensures reliability over 15-year vehicle life. |
Use Scenario: Level-shifting and bus buffering between 3.3V FPGA I/O banks and 5V industrial analog I/O cards. IC Role / Device Role / Timing Role: Non-inverting buffer with OE-controlled tri-state output for dynamic bus arbitration in modular I/O backplanes. Use Value: ±8mA drive sustains signal integrity across 10cm ribbon cables; wide VCC range avoids external regulators; compact SOT353 saves board space in DIN-rail enclosures. |
| ADAS Camera Interface Hub | Medical Infusion Pump Controller |
|
Use Scenario: Buffering MIPI CSI-2 clock and data lanes between image sensor and SoC in rear-view camera modules. IC Role / Device Role / Timing Role: Low-skew, low-jitter buffer isolating sensor-side signals from SoC-side noise; OE used for hot-plug detection. Use Value: tPD ≤ 3.4ns and tEN ≤ 3.6ns ensure sub-ns timing alignment; 125°C rating supports under-hood mounting near camera lens assemblies. |
Use Scenario: Enabling/disabling serial communication lines (RS-485, UART) between pump motor controller and HMI display. IC Role / Device Role / Timing Role: 3-state gate controlling physical layer access to shared diagnostic bus; OE synchronized with firmware safety state machine. Use Value: AEC-Q100 qualification maps to ISO 13485 design controls; low ICC supports battery-backed operation; ESD robustness prevents field failures during hospital ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G126DBVR | Wider operating range (1.65V–5.5V); lower drive (±24mA @ 3.3V); no AEC-Q100 qualification | Targeted at commercial/industrial use only; lacks automotive temperature validation and PPAP support | Select when cost sensitivity outweighs automotive compliance; verify thermal derating above 85°C |
| 74AUP1G126GW,125 | Ultra-low power (ICC ≤ 0.9μA @ 3.3V); slower speed (tPD ≤ 12.4ns @ 3.3V); same AEC-Q100 Grade 1 | Better suited for battery-powered telematics modules where standby current dominates system budget | Prefer for always-on wake-up circuits; avoid in high-speed sensor fusion paths requiring <5ns timing |
Compared with SN74LVC1G126DBVR and 74AUP1G126GW,125, the 74AHC1G126QSE-7 uniquely balances automotive qualification, 3.4ns speed, and ±8mA drive - making it optimal for time-critical, thermally demanding vehicle networks where both reliability and performance are non-negotiable.
Availability
74AHC1G126QSE-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O expansion, ADAS camera interface hubs, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for 74AHC1G126QSE-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-reliability solutions for automotive, industrial, and computing markets with IATF 16949-certified facilities.
The 74AHC1G126QSE-7 belongs to Diodes' AHC logic family - engineered specifically for automotive signal integrity, featuring enhanced ESD protection, wide-voltage operation, and rigorous AEC-Q100 validation for under-hood and chassis applications.
FAQ
What is the maximum capacitive load the 74AHC1G126QSE-7 can drive while maintaining specified timing?
The device is characterized for CL = 15pF and CL = 50pF loads per the datasheet. At 5V supply, tPD remains ≤5.5ns (15pF) and ≤7.5ns (50pF) across -40°C to +125°C. Driving >50pF may increase propagation delay nonlinearly and require empirical validation with actual PCB trace capacitance.
Can the 74AHC1G126QSE-7 be used with 1.8V logic inputs?
No - its VIH minimum is 1.5V at VCC = 2V, but 1.8V inputs fall below guaranteed recognition thresholds when VCC ≥ 2.0V. For 1.8V-compatible interfacing, consider the 74AUP1G126 variant, which specifies VIH = 0.63×VCC down to 1.65V supply.
Is the SOT353 package lead-free and RoHS compliant?
Yes - the 74AHC1G126QSE-7 uses matte tin-plated leads, is fully RoHS 3 compliant (2015/863/EU), halogen- and antimony-free (<900ppm Br+Cl, <1000ppm Sb), and carries no purposely added lead per EU Directive 2002/95/EC.
How does the Schmitt-trigger input improve system-level noise immunity?
The Schmitt action provides ~0.3V typical hysteresis, meaning input must transition fully from below VIL to above VIH (or vice versa) to register a logic change. This rejects sub-threshold noise spikes common on long harnesses or near motors - preventing false toggling in LIN, SENT, or PWM-sensing applications.
74AHC1G126QSE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74AHC
- 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:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74AHC1G126QSE-7 FAQ
1.How can I place an order for 74AHC1G126QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC1G126QSE-7 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 74AHC1G126QSE-7 reliable?
The price and inventory of 74AHC1G126QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC1G126QSE-7 is usually 5 days.
3.What payment methods are accepted for 74AHC1G126QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC1G126QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC1G126QSE-7?
74AHC1G126QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC1G126QSE-7 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 74AHC1G126QSE-7?
For technical support, including 74AHC1G126QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC1G126QSE-7 requirements.
6.How does Aetrix verify that 74AHC1G126QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74AHC1G126QSE-7 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 74AHC1G126QSE-7 meets industry standards.
7.What is the process for return or replacement of 74AHC1G126QSE-7?
All 74AHC1G126QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC1G126QSE-7, 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 74AHC1G126QSE-7 part is unused and in its original packaging.
Return procedure for 74AHC1G126QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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