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Nexperia USA Inc. 74LVC126ABQ,115
- Part No.:
- 74LVC126ABQ,115
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74LVC126ABQ,115.pdf
- Description:
- IC BUF NON-INVERT 3.6V 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:15,936
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Product details
Overview
74LVC126ABQ,115 from Nexperia is a quad 3-state buffer/line driver with 5 V tolerant inputs and outputs, designed for voltage-level translation between 1.2 V–3.6 V logic domains and 5 V systems. It features Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and operates across –40 °C to +125 °C. Used in mixed-voltage I/O interfacing on industrial control backplanes.
For engineers reviewing the 74LVC126ABQ,115 datasheet, 74LVC126ABQ,115 pinout, 74LVC126ABQ,115 application, or 74LVC126ABQ,115 equivalent, key selection criteria include 5.5 V input tolerance, 1.2 V minimum supply, IOFF-enabled hot-swap safety, propagation delay ≤6.0 ns at 3.3 V, and DHVQFN14 thermal performance.
Technical Context
This device implements four independent non-inverting buffers, each with active-HIGH output enable (nOE) controlling high-impedance 3-state output. Schmitt-trigger inputs accept slow-rising signals and reject noise up to ±0.2 V hysteresis, while IOFF circuitry disables outputs and blocks backflow current when VCC = 0 V.
It complies with JEDEC standards JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V), supporting interoperability across legacy and low-voltage logic families including TTL and CMOS.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2 V to 3.6 V - enables direct interface with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic without level shifters |
| Input Voltage Tolerance | Up to 5.5 V - allows safe connection to 5 V buses in mixed-supply systems |
| Propagation Delay (tpd) | ≤6.0 ns at VCC = 3.3 V - supports >100 MHz data rates in buffered address/data paths |
| IOFF Leakage Current | ±10 μA max at VCC = 0 V - prevents damaging backflow during live insertion or partial power-down |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive modules and industrial motor drives |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets IEC 61000-4-2 system-level robustness requirements |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - sufficient to drive 50 pF loads over 10 cm PCB traces |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 × 3.0 × 0.85 mm body, 0.5 mm pitch, exposed thermal pad (non-soldered by default), 14 terminals, leadless construction optimized for thermal dissipation and board space efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-HIGH output enable | Each controls one buffer's 3-state output independently; HIGH enables drive, LOW forces high-Z |
| 1A–4A | Data input | Non-inverting input per channel; accepts 1.2–5.5 V signals with Schmitt-trigger hysteresis |
| 1Y–4Y | Data output | Buffered, 3-state output; 5 V tolerant even when VCC = 1.2 V |
| VCC | Power supply | Single supply rail (1.2–3.6 V); powers all logic and output stages |
| GND | Ground reference | 0 V return path for all internal circuits and I/O; pin 7 is functional ground |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/O at 1.2 V supply | Enables direct connection to 5 V peripherals without external translators in battery-powered IoT nodes |
| IOFF partial power-down protection | Prevents current backflow when VCC is off-critical for hot-pluggable modules and PCIe add-in cards |
| Schmitt-trigger inputs | Provides ≥0.2 V hysteresis to suppress noise on long traces or mechanical switch inputs in factory automation |
| Wide temperature range (–40 °C to +125 °C) | Supports deployment in engine control units and outdoor telecom base stations without derating |
| Low dynamic power (CPD = 12.2 pF) | Reduces switching power by >40% vs. older LVT variants-extends battery life in portable test equipment |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Interfacing 3.3 V microcontroller GPIOs to legacy 5 V sensor bus in programmable logic controller racks. IC Role / Device Role / Timing Role: Quad buffer isolates voltage domains and provides noise-immune signal conditioning with precise 3-state timing control. Use Value: Eliminates need for discrete level shifters; Schmitt inputs tolerate EMI from nearby contactors; IOFF prevents bus contention during firmware updates. | Use Scenario: Driving multiple 5 V LIN transceiver enable lines from a 1.8 V automotive MCU in door module assemblies. IC Role / Device Role / Timing Role: Level-translating line driver with independent OE control per channel for staggered wake-up sequencing. Use Value: 5.5 V input tolerance ensures compatibility with LIN bus transients; –40 °C to +125 °C rating matches under-dash thermal profile. |
| Test Equipment Signal Routing | Medical Diagnostic Imaging Subsystem |
Use Scenario: Multiplexing digital trigger and clock signals between FPGA-based pattern generators and DUT interfaces in automated test systems. IC Role / Device Role / Timing Role: Low-skew (<1.5 ns) 3-state buffer enabling bidirectional signal routing with sub-ns timing precision. Use Value: Propagation delay ≤6.0 ns and output skew ≤1.5 ns ensure deterministic timing alignment across 4-channel parallel stimulus paths. | Use Scenario: Isolating low-voltage imaging processor I/O from higher-voltage analog front-end power sequencing logic in ultrasound beamformers. IC Role / Device Role / Timing Role: Hot-swap-safe buffer preventing latch-up during modular probe replacement under power. Use Value: IOFF functionality blocks reverse current during probe insertion; DHVQFN14 package minimizes board area in space-constrained handheld units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC126APWR | TSSOP14 package (SOT402-1); 4.4 mm body width; 1.2 mm height; no exposed thermal pad | Lower thermal resistance than SO14 but higher than DHVQFN14; less suitable for high-density thermal-limited layouts | Select when board assembly uses standard TSSOP reflow profiles and thermal load is moderate |
| 74LVC126AD,118 | SO14 package (SOT108-1); through-hole compatible footprint; 3.9 mm body width; 1.75 mm height | Higher thermal resistance; requires larger PCB area; preferred for prototyping and legacy designs | Select for hand-soldered evaluation or where SOIC footprint compatibility is mandatory |
Compared with SN74LVC126APWR and 74LVC126AD,118, the 74LVC126ABQ,115 offers superior thermal performance via its exposed-pad DHVQFN14 package and smallest board footprint-critical for compact medical and automotive modules where power density and reliability under thermal stress are design priorities.
Availability
74LVC126ABQ,115 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, automated test equipment, and medical imaging subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVC126ABQ,115 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, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for industrial, automotive, and computing markets.
The 74LVC126A series belongs to Nexperia's advanced LVC logic family, engineered specifically for low-voltage mixed-signal interfacing with robust ESD immunity, wide supply flexibility, and partial power-down capability in harsh environments.
FAQ
Can 74LVC126ABQ,115 be used with a 1.2 V supply while driving 5 V-tolerant loads?
Yes. The device is fully specified down to 1.2 V supply and maintains 5.5 V input/output tolerance across the entire operating range. Output drive strength scales with VCC (e.g., ±24 mA at 3.0 V), but logic thresholds remain valid-enabling safe interface to 5 V loads without external clamping or translation.
What is the function of the exposed thermal pad on the DHVQFN14 package?
The exposed pad (pin 1 index area) in SOT762-1 is thermally conductive but electrically isolated. Per Nexperia guidance, it may remain floating or be connected to GND for improved heat dissipation-no soldering is required, though thermal vias to inner ground planes are recommended for sustained 100+ mW operation.
How does IOFF protection behave during power sequencing?
When VCC drops to 0 V, the IOFF circuit automatically disables all outputs and presents high-impedance I/O states-even if input or output pins are held at 5.5 V. This prevents destructive backflow current into powered-down sections, satisfying IEC 61000-4-2 hot-swap compliance requirements in modular systems.
Is the 74LVC126ABQ,115 pin-compatible with other 74LVC126A variants?
Yes-pin functions are identical across all 74LVC126A packages (SO14, TSSOP14, DHVQFN14, DHXQFN14). However, physical layout differs: DHVQFN14 has no leads and requires reflow-compatible land patterns with thermal vias, unlike SO14 or TSSOP14 which use gull-wing leads and standard stencil apertures.
74LVC126ABQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVC
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.2V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74LVC126ABQ,115 FAQ
1.How can I place an order for 74LVC126ABQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC126ABQ,115 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 74LVC126ABQ,115 reliable?
The price and inventory of 74LVC126ABQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC126ABQ,115 is usually 5 days.
3.What payment methods are accepted for 74LVC126ABQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC126ABQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC126ABQ,115?
74LVC126ABQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC126ABQ,115 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 74LVC126ABQ,115?
For technical support, including 74LVC126ABQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC126ABQ,115 requirements.
6.How does Aetrix verify that 74LVC126ABQ,115 is sourced from the original manufacturer or authorized distributors?
All 74LVC126ABQ,115 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 74LVC126ABQ,115 meets industry standards.
7.What is the process for return or replacement of 74LVC126ABQ,115?
All 74LVC126ABQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC126ABQ,115, 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 74LVC126ABQ,115 part is unused and in its original packaging.
Return procedure for 74LVC126ABQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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