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Nexperia USA Inc. 74LVC1G126GXH
- Part No.:
- 74LVC1G126GXH
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
74LVC1G126GXH.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 5X2SON
- Quantity:
- Payment:
- Shipping:
Inventory:6,053
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Product details
Overview
74LVC1G126GXH from Nexperia is a single 3-state bus buffer/line driver with Schmitt-trigger inputs, designed for level translation between 3.3 V and 5 V logic domains in mixed-voltage systems. It features ±24 mA output drive at VCC = 3.0 V, IOFF partial power-down protection, and operates across -40 °C to +125 °C. Used in industrial I/O expansion, sensor interface signal conditioning, and FPGA/CPU peripheral buffering.
For engineers reviewing the 74LVC1G126GXH datasheet, 74LVC1G126GXH pinout, 74LVC1G126GXH application, or 74LVC1G126GXH equivalent, this page delivers verified electrical parameters, X2SON5 package layout, real-world use cases, and validated alternative options - all grounded in Nexperia's Rev. 18.1 product data sheet (Sept. 2024).
Technical Context
This device implements a non-inverting buffer with active-high 3-state control (OE), enabling bidirectional bus isolation in compact digital subsystems. Its Schmitt-trigger inputs tolerate slow-rising signals and improve noise immunity in noisy industrial environments.
The IOFF circuit ensures outputs enter high-impedance state when VCC = 0 V, preventing backflow current during hot-insertion or partial power-down sequences - critical for system-level power sequencing integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - supports direct interfacing with 1.8 V, 2.5 V, 3.3 V, and 5 V logic families without external level shifters. |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - sufficient to drive 15 pF loads with <6 ns propagation delay, enabling reliable signal integrity on short PCB traces. |
| Input Voltage Tolerance | Up to 5.5 V independent of VCC - allows 5 V-tolerant inputs even when powered from 1.65 V, simplifying mixed-supply domain bridging. |
| Propagation Delay | 0.5–4.5 ns (VCC = 3.0–3.6 V) - meets timing requirements for high-speed control signaling in microcontroller GPIO expansion. |
| IOFF Leakage Current | ±2 μA at VCC = 0 V - limits backfeed current during power-down, protecting upstream drivers and enabling safe hot-swap operation. |
| ESD Protection | HBM >2000 V, CDM >1000 V - exceeds JEDEC JS-001/JS-002 Class 2/C3, reducing susceptibility to handling-induced failures in manufacturing. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLC I/O cards, and outdoor edge computing hardware. |
Pinout & Package
X2SON5 package (SOT1226-3): plastic thermal-enhanced extremely thin small outline, no leads, 5 terminals, body size 0.8 × 0.8 × 0.32 mm, side-wettable flanks not present (distinguishes it from GZ variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OE | Active-high output enable input - drives Y to high-impedance when low; must be pulled high or driven actively for normal buffer operation. |
| 2 | VCC | Positive supply rail - decoupling capacitor (100 nF) required within 2 mm for stable switching performance. |
| 3 | GND | Ground reference - shared return path for input, output, and supply currents; requires low-inductance connection to PCB ground plane. |
| 4 | A | Non-inverting data input - accepts TTL- and CMOS-compatible logic levels; Schmitt-trigger threshold improves noise margin on long traces. |
| 5 | Y | 3-state buffered output - presents high-impedance (Z) when OE = L; otherwise replicates A with rail-to-rail swing and ±24 mA drive capability. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 1.65–5.5 V operation enables drop-in replacement across legacy and modern logic families without redesigning power rails. |
| IOFF Partial Power-Down | Prevents damaging backflow current when VCC is off - essential for PCIe add-in cards, modular sensor nodes, and hot-pluggable interfaces. |
| Schmitt-Trigger Inputs | Provides hysteresis (~0.3 V typical at 3.3 V) to reject noise on slow-rising control lines like reset or enable signals in motor drives. |
| 5.5 V-Tolerant Inputs | Eliminates need for external clamping diodes when interfacing with 5 V microcontrollers driving 3.3 V FPGA I/O banks. |
| Low Dynamic Power | CPD = 25 pF (enabled), 6 pF (disabled) - reduces switching power by >75% in standby mode, extending battery life in portable instrumentation. |
Applications
| Industrial Sensor Interface | FPGA I/O Expansion |
|---|---|
|
Use Scenario: Isolating analog sensor ADC clock lines from noisy digital control logic in programmable logic controllers. IC Role / Device Role / Timing Role: Non-inverting buffer with 3-state control synchronizes clock delivery while blocking noise coupling during idle cycles. Use Value: Schmitt-trigger inputs suppress EMI-induced glitches on 10 cm PCB traces; ±24 mA drive ensures clean 50 MHz clock edges into 20 pF load. |
Use Scenario: Expanding limited FPGA bank I/Os to drive multiple SPI peripherals with independent chip-select isolation. IC Role / Device Role / Timing Role: Bus buffer enables time-multiplexed peripheral access via OE-controlled gating of data paths. Use Value: 4.5 ns max tpd at 3.3 V preserves setup/hold margins for 80 Mbps SPI; IOFF prevents contention during FPGA configuration phase. |
| Automotive Body Control Module | USB-C Power Delivery Sequencing |
|
Use Scenario: Level-shifting wake-up signals between 5 V CAN transceiver status pins and 3.3 V MCU GPIOs in door module ECUs. IC Role / Device Role / Timing Role: Voltage translator with fail-safe high-Z state during MCU sleep mode. Use Value: 5.5 V-tolerant A input accepts CAN TX logic directly; -40 °C to +125 °C rating matches under-dash thermal profile. |
Use Scenario: Controlling VBUS enable/disconnect sequencing between USB-C port controller and power switch MOSFET gate. IC Role / Device Role / Timing Role: Logic buffer isolates control logic from power-switching transients during hot-plug events. Use Value: IOFF blocks gate-drive leakage when PD controller powers down; 0.32 mm height fits ultra-thin portable charger PCB stack-ups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC1G125GXH | Inverting buffer (A → Y̅); identical pinout, specs, and package. | Requires logic inversion in signal path - unsuitable where polarity must be preserved (e.g., clock distribution). | Select only if system-level logic already accounts for inversion; otherwise, 74LVC1G126GXH maintains signal polarity. |
| SN74LVC1G126DBVR | TSSOP-5 (SOT23-5) package; 1.25 mm body width; 2× larger footprint than X2SON5. | Less suitable for space-constrained designs (e.g., wearables, miniaturized IoT nodes) due to 3.0 × 1.75 mm vs. 0.8 × 0.8 mm area. | Choose SN74LVC1G126DBVR only when board assembly uses standard SMT pick-and-place tooling optimized for SOIC/TSSOP, not X2SON. |
Compared with 74LVC1G126GXH, the 74LVC1G125GXH changes signal polarity but saves no board area, while the SN74LVC1G126DBVR trades 85% smaller footprint for increased PCB real estate usage - making the GXH variant optimal for ultra-dense, thermally constrained layouts.
Availability
74LVC1G126GXH is available at Aetrix Electronics and suitable for industrial sensor interface, FPGA I/O expansion, automotive body control modules, and USB-C power delivery sequencing requiring stable component supply across extended temperature ranges.
Supply support for 74LVC1G126GXH 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 solutions with focus on efficiency, reliability, and miniaturization.
The 74LVC1G126 belongs to Nexperia's LVC logic family - engineered for low-voltage operation, robust noise immunity, and seamless voltage-domain bridging in space- and power-sensitive embedded systems.
FAQ
Can 74LVC1G126GXH operate reliably at 1.65 V supply while driving a 5 V-tolerant load?
Yes. The device functions correctly at VCC = 1.65 V and tolerates input voltages up to 5.5 V regardless of supply level. However, output swing is rail-to-rail (0 V to 1.65 V), so it cannot directly drive a 5 V logic input without an external level shifter or pull-up resistor network.
What is the maximum capacitive load the 74LVC1G126GXH can drive at 100 MHz?
At 100 MHz, the recommended load is ≤15 pF to maintain signal integrity within specified tpd and overshoot limits. Driving >20 pF risks exceeding 5.5 ns propagation delay and increases risk of ringing due to trace impedance mismatch - verified using Nexperia's dynamic characteristics test conditions (CL = 30–50 pF, RL = 500 Ω).
Does the X2SON5 package (SOT1226-3) support automated optical inspection (AOI) after reflow?
Yes. The SOT1226-3 package has exposed copper terminals with defined coplanarity (≤0.05 mm) and consistent solder wetting behavior. Its 0.8 mm pitch and side-view accessibility allow standard AOI systems to verify solder joint quality, voiding, and alignment without requiring X-ray inspection.
How does IOFF behavior differ from standard high-impedance disable in partial power-down scenarios?
IOFF actively disables both input and output circuitry when VCC = 0 V, limiting leakage to ±2 μA. Standard 3-state buffers may allow forward-biased input clamps to conduct when VCC is unpowered, risking damage or bus contention - IOFF eliminates this failure mode entirely.
74LVC1G126GXH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 4-XFDFN Exposed Pad
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-X2SON (0.80x0.80)
74LVC1G126GXH FAQ
1.How can I place an order for 74LVC1G126GXH through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G126GXH 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 74LVC1G126GXH reliable?
The price and inventory of 74LVC1G126GXH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G126GXH is usually 5 days.
3.What payment methods are accepted for 74LVC1G126GXH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G126GXH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G126GXH?
74LVC1G126GXH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G126GXH 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 74LVC1G126GXH?
For technical support, including 74LVC1G126GXH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G126GXH requirements.
6.How does Aetrix verify that 74LVC1G126GXH is sourced from the original manufacturer or authorized distributors?
All 74LVC1G126GXH 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 74LVC1G126GXH meets industry standards.
7.What is the process for return or replacement of 74LVC1G126GXH?
All 74LVC1G126GXH units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G126GXH, 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 74LVC1G126GXH part is unused and in its original packaging.
Return procedure for 74LVC1G126GXH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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