My Inquiry
My Account
NXP Semiconductors 74LVC126APW,112
- Part No.:
- 74LVC126APW,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVC126APW,112.pdf
- Description:
- IC BUFF NON-INVERT 3.6V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:24,384
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVC126APW,112 from Nexperia is a quad 3-state buffer/line driver with 5 V tolerant inputs and outputs, designed for 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 and FPGA I/O expansion modules.
For engineers reviewing the 74LVC126APW,112 datasheet, 74LVC126APW,112 pinout, 74LVC126APW,112 application, or 74LVC126APW,112 equivalent, key selection criteria include 5 V tolerance at 3.3 V supply, tpd ≤ 4.7 ns (VCC = 3.3 V), IOFF leakage < ±10 μA at VCC = 0 V, Schmitt-trigger input hysteresis, and TSSOP14 thermal performance (7.3 mW/K derating above 81 °C).
Technical Context
This device implements four independent non-inverting buffers, each with active-HIGH 3-state enable (nOE) controlling output impedance. The IOFF circuit actively disables outputs during power-down, blocking backflow current when VCC = 0 V while inputs/outputs remain at up to 5.5 V.
Schmitt-trigger inputs provide ≥ 0.35 V hysteresis (VCC = 2.3 V–2.7 V), enabling robust operation with slow-rising signals from mechanical switches or legacy TTL sources. All static and dynamic parameters are fully characterized from –40 °C to +125 °C under JEDEC JESD8-7A/5A/C compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage range | 1.2 V to 3.6 V - supports direct interface with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic families |
| Input voltage tolerance | –0.5 V to +5.5 V - enables safe connection to 5 V buses without external level shifters |
| Propagation delay (tpd) | ≤ 4.7 ns at VCC = 3.3 V - ensures timing-critical signal routing in high-speed digital interfaces |
| IOFF leakage current | < ±10 μA at VCC = 0 V - prevents damaging backflow during hot-swap or partial power-down sequences |
| Output drive strength | ±24 mA at VCC = 3.0 V - sufficient to drive 50 pF loads with ≤ 6.0 ns disable time (tdis) |
| Operating temperature | –40 °C to +125 °C - qualified for extended industrial and automotive under-hood environments |
| ESD protection | HBM > 2000 V, CDM > 1000 V - meets IEC 61000-4-2 system-level robustness requirements |
Pinout & Package
TSSOP14 package (SOT402-1): plastic thin shrink small outline, 14 leads, 4.4 mm body width, 0.65 mm lead pitch, 1.2 mm max height. Pin 1 index located at top-left corner with beveled edge marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 (1OE–4OE) | Active-HIGH output enable | Drives corresponding Y output to high-impedance state when LOW; enables bus sharing and load isolation |
| 2, 5, 9, 12 (1A–4A) | Buffer input | Accepts 1.2 V–3.6 V logic levels with Schmitt-trigger hysteresis for noise margin against slow edges |
| 3, 6, 8, 11 (1Y–4Y) | Buffer output | Delivers rail-to-rail CMOS output swing with 5 V tolerance; sinks/sours ±24 mA at VCC = 3.0 V |
| 7 | GND | Reference ground for all I/O and internal logic; must be low-inductance connection for EMI control |
| 14 | VCC | Primary supply input; decoupling capacitor (100 nF) required within 5 mm for stable switching |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/O at 1.2 V–3.6 V supply | Enables direct interconnection between legacy 5 V subsystems and modern low-voltage FPGAs/microcontrollers without discrete translators |
| IOFF partial power-down protection | Prevents destructive current flow when VCC is unpowered but I/O lines remain live-critical for hot-plug and modular backplane designs |
| Schmitt-trigger inputs | Provides ≥ 0.35 V hysteresis (VCC = 2.3 V–2.7 V), eliminating need for external RC filtering on noisy switch or sensor inputs |
| JEDEC-compliant voltage ranges | Fully supports JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V) for guaranteed interoperability |
| Industrial temperature grade | Specified over –40 °C to +125 °C ambient, validated with full static/dynamic characterization at both extremes |
Applications
| Industrial PLC Backplane Interface | FPGA I/O Expansion Module |
|---|---|
Use Scenario: Interfacing 3.3 V FPGA I/O banks to 5 V fieldbus transceivers (e.g., RS-485, CAN) on programmable logic controller backplanes. IC Role / Device Role / Timing Role: Level-translating buffer isolating FPGA core voltage domain from higher-voltage field-side peripherals. Use Value: Eliminates need for dual-supply translators; IOFF prevents backfeed during FPGA reconfiguration cycles. | Use Scenario: Expanding I/O count of Xilinx Artix-7 FPGA by driving off-chip memory and peripheral address/data buses. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer providing fanout and bus contention control for parallel memory interfaces. Use Value: 4.7 ns propagation delay and 6.0 ns disable time meet setup/hold timing for 100 MHz SRAM access. |
| Automotive Body Control Unit | Test Equipment Signal Conditioning |
Use Scenario: Isolating microcontroller GPIOs from 5 V sensor inputs (e.g., door latch switches, HVAC actuators) in BCM modules. IC Role / Device Role / Timing Role: Robust input buffer with Schmitt-trigger action rejecting EMI-induced glitches on long harness runs. Use Value: HBM > 2000 V and –40 °C to +125 °C rating ensure reliability in under-dash environments. | Use Scenario: Conditioning TTL/CMOS signals from DUTs before acquisition by 12-bit ADC-based test instrumentation. IC Role / Device Role / Timing Role: Input conditioning stage providing 5 V tolerance and noise filtering prior to analog front-end sampling. Use Value: Schmitt-trigger inputs suppress contact bounce and line reflections, improving measurement repeatability. |
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 (TI) | Identical logic function and pinout; slightly higher ICC (max 40 μA vs. 10 μA) at VCC = 3.6 V | Same industrial temperature range; TI's version lacks explicit IOFF characterization at –40 °C | Select when TI supply chain preference exists and IOFF validation at extreme cold is not required |
| 74LVCH126PW,118 (Nexperia) | Includes bus-hold circuitry on all inputs; higher VIH/VIL thresholds; same 5 V tolerance and TSSOP14 package | Eliminates external pull-ups on unused inputs; increases static power by ~2 μA per input | Choose for systems with floating control lines or where board space precludes discrete resistors |
Compared with SN74LVC126APWR, the 74LVC126APW,112 offers lower quiescent current and verified IOFF down to –40 °C; versus 74LVCH126PW,118, it trades bus-hold functionality for minimal static power and simpler input biasing.
Availability
74LVC126APW,112 is available at Aetrix Electronics and suitable for industrial automation backplanes, FPGA I/O expansion modules, automotive body control units, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for 74LVC126APW,112 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 optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.
The 74LVC logic family targets low-voltage, high-speed digital interfacing with emphasis on mixed-voltage compatibility, robust ESD performance, and extended temperature operation for demanding embedded systems.
FAQ
Can 74LVC126APW,112 operate with a 1.2 V supply while interfacing to 5 V signals?
Yes. The device is fully specified at VCC = 1.2 V and supports input voltages up to +5.5 V regardless of supply level. Output voltage swing remains rail-to-rail (0 V to VCC), but 5 V tolerance applies only to input pins-not outputs-ensuring safe reception of 5 V signals without damage or level-shifting components.
What is the purpose of the IOFF feature, and how does it behave during power-down?
IOFF disables all outputs when VCC = 0 V, limiting OFF-state leakage to ±10 μA maximum even if inputs or outputs are held at 5.5 V. This prevents reverse current flow that could damage upstream drivers or cause unintended logic states in powered subsystems-a critical requirement for hot-swap-capable backplanes and modular systems.
How does the Schmitt-trigger input improve noise immunity compared to standard CMOS inputs?
Schmitt-trigger inputs provide hysteresis-typically ≥ 0.35 V at VCC = 2.3 V–2.7 V-so rising and falling thresholds differ. This eliminates multiple toggling caused by slow or noisy edges (e.g., from mechanical switches or long traces), ensuring single, clean transitions without external RC filtering or debouncing firmware overhead.
Is the TSSOP14 package (SOT402-1) thermally adequate for continuous 24 mA output loading at +125 °C?
Yes. At Tamb = +125 °C, the TSSOP14 package derates linearly at 7.3 mW/K above +81 °C, yielding Ptot ≈ 220 mW. With worst-case dynamic power (CPD = 12.2 pF, f = 100 MHz, VCC = 3.3 V) ≈ 13 mW plus static ICC ≈ 40 μA, total dissipation remains well below thermal limit, enabling reliable operation under full load at maximum ambient.
74LVC126APW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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-TSSOP
74LVC126APW,112 FAQ
1.How can I place an order for 74LVC126APW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC126APW,112 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 74LVC126APW,112 reliable?
The price and inventory of 74LVC126APW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC126APW,112 is usually 5 days.
3.What payment methods are accepted for 74LVC126APW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC126APW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC126APW,112?
74LVC126APW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC126APW,112 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 74LVC126APW,112?
For technical support, including 74LVC126APW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC126APW,112 requirements.
6.How does Aetrix verify that 74LVC126APW,112 is sourced from the original manufacturer or authorized distributors?
All 74LVC126APW,112 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 74LVC126APW,112 meets industry standards.
7.What is the process for return or replacement of 74LVC126APW,112?
All 74LVC126APW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC126APW,112, 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 74LVC126APW,112 part is unused and in its original packaging.
Return procedure for 74LVC126APW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC126APW,112 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
