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Diodes Incorporated 74LVC1G126QW5-7
- Part No.:
- 74LVC1G126QW5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74LVC1G126QW5-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:29,280
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Product details
Overview
74LVC1G126QW5-7 from Diodes Incorporated is an automotive-grade, single non-inverting buffer with 3-state output, designed for voltage-level shifting and signal isolation in mixed-voltage systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs, delivers ±24mA drive at 3.3V, and supports partial power-down via IOFF - enabling use in Grade 1 automotive applications (–40°C to +125°C).
For engineers reviewing the 74LVC1G126QW5-7 datasheet, 74LVC1G126QW5-7 pinout, 74LVC1G126QW5-7 application, or 74LVC1G126QW5-7 equivalent, key selection criteria include 3-state enable timing (tEN/tDIS ≤7.0ns @3.3V), IOFF leakage (±2μA), AEC-Q100 qualification, SOT25 package thermal resistance (θJA = 184°C/W), and 5-pin logic gate compatibility in space-constrained automotive control modules.
Technical Context
This device implements a CMOS-based non-inverting buffer with active-HIGH output enable (OE), where OE = LOW forces Y into high-impedance state. Its IOFF circuit actively disables both input and output paths during VCC = 0V, preventing back-current flow in partial-power-down systems.
Input thresholds are voltage-ratio dependent (VIH = 0.65×VCC min at 1.65–1.95V; 0.7×VCC at 4.5–5.5V), and output drive strength scales with supply voltage - delivering –24mA/24mA at VCC = 3.0V and –32mA/32mA at VCC = 4.5V while maintaining VOL ≤0.80V and VOH ≥3.4V under full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 5.5V - enables direct interface between 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifters. |
| IOFF Leakage Current | ±2 μA - ensures safe bus isolation during power sequencing in multi-rail automotive ECUs. |
| Output Drive Strength | ±24 mA at 3.0V - sufficient to drive 50Ω transmission lines or fan-out to ≥10 LVC loads. |
| Propagation Delay | 2.0 ns typical (tPD) at 3.3V - supports >100 MHz data rates in short-path signal routing. |
| ESD Protection | 2 kV HBM, 1 kV CDM - exceeds AEC-Q100-002/-011 requirements for under-hood electronics. |
| Operating Temperature | –40°C to +125°C ambient - qualified for engine control, ADAS sensor interfaces, and body electronics. |
| Input Voltage Tolerance | Up to 5.5V - allows 5V-tolerant inputs on lower-voltage supplies (e.g., 1.8V core with 5V sensor I/O). |
Pinout & Package
SOT25 (3.0mm × 2.8mm × 1.2mm, 0.95mm lead pitch) - thermally optimized 5-pin SC-74A package with θJA = 184°C/W on standard FR-4 PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | Non-inverting logic input; accepts 0–5.5V regardless of VCC, enabling mixed-voltage signal injection. |
| 2 (OE) | Output Enable (Active HIGH) | Drives Y to high-Z when LOW; synchronizes bus release with system power-down sequences. |
| 3 (GND) | Ground Reference | Return path for all internal logic and output current; must be low-inductance connection in noise-sensitive automotive layouts. |
| 4 (Y) | 3-State Output | Buffered, non-inverted copy of A when OE = HIGH; high-impedance when OE = LOW - prevents bus contention. |
| 5 (VCC) | Power Supply | Supplies internal logic and output stage; IOFF remains active even if VCC drops to 0V during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Grade 1 Automotive Qualification | AEC-Q100 qualified, PPAP capable, manufactured in IATF 16949 certified facilities - meets OEM requirements for engine bay and chassis control units. |
| IOFF Partial Power-Down Support | Blocks current backflow from powered sections into unpowered VCC domains - eliminates need for external isolation switches in multi-supply systems. |
| 5.5V-Tolerant Inputs | Accepts 5V signals while operating at 1.65V–3.3V VCC - simplifies integration of legacy sensors or higher-voltage peripherals into low-power microcontroller subsystems. |
| Low Dynamic Power Consumption | CPD = 19 pF (outputs enabled) - reduces switching noise and total system power in always-on vehicle networks like LIN or CAN wake-up circuits. |
| Robust ESD & Latch-Up Immunity | 2 kV HBM, 1 kV CDM, >100 mA latch-up immunity - withstands assembly handling and real-world transients in production and field environments. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital I/O Module |
|---|---|
Use Scenario: Isolating microcontroller GPIO from 5V sensor outputs during MCU sleep mode while maintaining bus readiness. IC Role / Device Role / Timing Role: 3-state buffer enabling dynamic bus arbitration and power-gated signal routing. Use Value: IOFF prevents backfeed into de-energized 3.3V MCU rails, eliminating risk of latch-up or false wake-up events. |
Use Scenario: Level-shifting 24V field-side digital inputs down to 3.3V FPGA logic in modular I/O cards. IC Role / Device Role / Timing Role: Non-inverting voltage translator with fast enable/disable for synchronized channel scanning. Use Value: 2.0 ns propagation delay and 7.0 ns enable time support 50+ kHz scan rates across 16-channel I/O banks. |
| ADAS Camera Interface Bridge | Automotive Body Control Module (BCM) |
Use Scenario: Driving MIPI CSI-2 clock or control lines from a low-voltage SoC to higher-voltage image sensor sub-system. IC Role / Device Role / Timing Role: Signal integrity-preserving buffer with controlled edge rates (≤10 ns/V at 3.3V) to minimize EMI. Use Value: 5.5V-tolerant inputs accept sensor-side pull-ups; ±24mA drive ensures clean edges over 10 cm flex traces. |
Use Scenario: Enabling/disabling LED driver enable lines based on ignition state in centralized lighting controllers. IC Role / Device Role / Timing Role: Logic-controlled switch for power-domain gating with fail-safe high-Z default. Use Value: OE-active-HIGH behavior aligns with standard automotive wake/sleep protocols; –40°C to +125°C operation ensures reliability in trunk-mounted BCMs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G126DBVR | Same logic function and 1.65–5.5V range, but rated only to +85°C industrial temp; no AEC-Q100 qualification. | Not suitable for under-hood or transmission control; limited to cabin infotainment or dashboard modules. | Select only for cost-sensitive non-automotive designs where Grade 1 temperature and PPAP are unnecessary. |
| 74LVC1G125W5-7 | Inverting buffer variant (74LVC1G125); identical package, pinout, and electrical specs except polarity. | Requires logic inversion in signal path - unsuitable where signal phase integrity is required (e.g., clock forwarding). | Choose only when system-level inversion is acceptable or already compensated elsewhere in the design. |
Compared with SN74LVC1G126DBVR and 74LVC1G125W5-7, the 74LVC1G126QW5-7 uniquely combines AEC-Q100 Grade 1 qualification, IOFF-enabled partial power-down, and non-inverting behavior in the SOT25 footprint - making it the sole fit for safety-critical automotive signal routing where phase, temperature, and supply sequencing are concurrently constrained.
Availability
74LVC1G126QW5-7 is available at Aetrix Electronics and suitable for automotive engine control, industrial PLC I/O expansion, and ADAS camera interface designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVC1G126QW5-7 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 analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The 74LVC logic family targets low-voltage, mixed-signal interfacing with emphasis on AEC-Q100 compliance, wide supply tolerance, and robustness in electrically noisy environments - specifically engineered for automotive signal conditioning and power-domain bridging.
FAQ
Can the 74LVC1G126QW5-7 operate with VCC = 1.5V?
No. The recommended minimum operating voltage is 1.65V per DS39798 Rev. 3–2. At 1.5V, the device may retain data but does not guarantee functional timing, output drive, or IOFF behavior. Data retention is specified only at 1.5V - not full operation.
What is the maximum capacitive load this buffer can drive reliably?
The datasheet specifies switching characteristics up to 30pF (for tPD/tEN measurements). With ±24mA drive at 3.3V and 2.0ns typical propagation delay, it reliably drives ≤50pF loads while maintaining <10% overshoot and meeting AEC-Q100 signal integrity requirements for automotive serial buses.
Does the IOFF feature require external biasing or configuration?
No. IOFF activates automatically when VCC = 0V, regardless of OE or input states. No external resistors, configuration pins, or firmware setup are needed - it is a hardwired silicon feature inherent to the LVC process and layout.
Is the SOT25 package RoHS and halogen-free compliant?
Yes. The 74LVC1G126QW5-7 is fully RoHS 3 compliant (2015/863/EU) and halogen-free per Diodes' definition: Br <900ppm, Cl <900ppm (Br+Cl <1500ppm), Sb <1000ppm - verified and documented in their Green Product Declaration.
74LVC1G126QW5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- 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:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
74LVC1G126QW5-7 FAQ
1.How can I place an order for 74LVC1G126QW5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G126QW5-7 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 74LVC1G126QW5-7 reliable?
The price and inventory of 74LVC1G126QW5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G126QW5-7 is usually 5 days.
3.What payment methods are accepted for 74LVC1G126QW5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G126QW5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G126QW5-7?
74LVC1G126QW5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G126QW5-7 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 74LVC1G126QW5-7?
For technical support, including 74LVC1G126QW5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G126QW5-7 requirements.
6.How does Aetrix verify that 74LVC1G126QW5-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G126QW5-7 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 74LVC1G126QW5-7 meets industry standards.
7.What is the process for return or replacement of 74LVC1G126QW5-7?
All 74LVC1G126QW5-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G126QW5-7, 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 74LVC1G126QW5-7 part is unused and in its original packaging.
Return procedure for 74LVC1G126QW5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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