My Inquiry
My Account
NXP Semiconductors 74LVC125AD/AUJ
- Part No.:
- 74LVC125AD/AUJ
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74LVC125AD/AUJ.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,086
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74LVC125AD/AUJ from Nexperia is a quad 3-state buffer/line driver with 5 V tolerant inputs and outputs, operating from 1.2 V to 3.6 V supply. It features Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and −40 °C to +125 °C temperature rating. Used in mixed-voltage bus interfacing between 3.3 V logic and legacy 5 V systems.
For engineers reviewing the 74LVC125AD/AUJ datasheet, 74LVC125AD/AUJ pinout, 74LVC125AD/AUJ application, or 74LVC125AD/AUJ equivalent, this page delivers verified electrical parameters, SO14 package layout, JEDEC-compliant voltage translation capability, and real-world interface use cases - all confirmed against Nexperia's Rev. 12 (2 May 2025) product data sheet.
Technical Context
The 74LVC125AD/AUJ implements four independent non-inverting buffers, each with active-low 3-state enable (nOE). Its IOFF circuitry disables outputs during power-down to prevent backflow current, meeting partial power-down requirements per JESD78. Schmitt-trigger inputs tolerate slow-rising signals and improve noise margin across voltage domains.
It supports bidirectional level translation: inputs accept 0–5.5 V regardless of VCC (1.2–3.6 V), and outputs drive 5 V-tolerant loads while sourcing/sinking up to ±24 mA at 3.0 V. Propagation delay is as low as 1.0 ns at VCC = 3.0–3.6 V, with output skew ≤1.5 ns between channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.2 V to 3.6 V - enables direct integration into ultra-low-voltage microcontroller I/O domains without level shifters. |
| Input Voltage Range | 0 V to 5.5 V - allows safe connection to 5 V TTL or CMOS sources even when VCC = 1.2 V. |
| Output Drive | ±24 mA at VCC = 3.0 V - sufficient to drive standard 50 Ω transmission lines or multiple LS-TTL loads. |
| Propagation Delay | 1.0 ns (min) to 4.8 ns (max) at VCC = 3.0–3.6 V - supports high-speed digital bus buffering up to ~200 MHz clock-equivalent rates. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLC backplanes, and extended-temperature embedded controllers. |
| ESD Protection | HBM >2000 V, CDM >1000 V - ensures robust handling during PCB assembly and field service without external protection. |
| IOFF Leakage | ±10 μA max at VCC = 0 V, VI/VO = 5.5 V - prevents damaging current flow when one side of a bus is powered down. |
Pinout & Package
74LVC125AD/AUJ is supplied in SO14 (SOT108-1) package: plastic small outline, 14-pin, 3.9 mm body width, 1.27 mm lead pitch. Pin 1 marked by index notch or dot; leads are gull-wing, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1OE, 2OE, 3OE, 4OE | Active-low enable inputs - each controls one buffer's 3-state output independently; pulled HIGH disables output (Z-state). |
| 2, 5, 9, 12 | 1A, 2A, 3A, 4A | Buffer input terminals - accept 5 V tolerant signals; Schmitt-triggered for noise rejection on slow edges. |
| 3, 6, 8, 11 | 1Y, 2Y, 3Y, 4Y | Non-inverting buffered outputs - drive 5 V-tolerant loads; support hot-swap and partial power-down via IOFF. |
| 7 | GND | Ground reference (0 V) - must be connected to system ground plane for stable operation and ESD path. |
| 14 | VCC | Positive supply rail - powers internal logic; decoupling capacitor (100 nF) required within 5 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/O | Inputs and outputs withstand 0–5.5 V regardless of VCC (1.2–3.6 V), enabling seamless 3.3 V ↔ 5 V bus bridging without external translators. |
| IOFF partial power-down | Outputs automatically enter high-impedance state when VCC = 0 V, blocking destructive back-current in multi-rail systems during sequencing or fault conditions. |
| Schmitt-trigger inputs | Hysteresis ≥0.3 V typical ensures reliable switching despite slow rise/fall times (e.g., RC-filtered control lines or long traces), reducing metastability risk. |
| JEDEC compliance | Fully conforms to JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V), guaranteeing interoperability across industry-standard voltage domains. |
| Low dynamic power | CPD = 12.4 pF at VCC = 3.3 V - limits switching power dissipation in high-frequency applications; total power <500 mW in SO14 package. |
Applications
| Industrial Bus Interface | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Interfacing a 3.3 V ARM Cortex-M7 MCU with legacy 5 V RS-485 transceivers and sensor nodes on a factory-floor CAN backbone. IC Role / Device Role / Timing Role: Bidirectional level-shifting buffer isolating MCU I/O from 5 V bus transients while maintaining signal integrity and timing alignment. Use Value: Eliminates need for discrete level shifters; IOFF prevents latch-up during MCU reset sequences; Schmitt inputs suppress EMI-induced glitches on noisy plant-floor wiring. |
Use Scenario: Expanding GPIO count on a space-constrained edge AI gateway using a 1.8 V FPGA and 5 V peripheral modules (e.g., ADCs, DACs, relays). IC Role / Device Role / Timing Role: Unidirectional output driver translating low-voltage FPGA outputs to full-swing 5 V control signals with sub-5 ns propagation delay. Use Value: Enables direct FPGA-to-peripheral control without voltage translation ICs; SO14 footprint fits tight routing; 125 °C rating supports fanless enclosure operation. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
|
Use Scenario: Driving 5 V-compatible door lock actuators and window motor drivers from a 3.3 V automotive microcontroller in a BCM unit. IC Role / Device Role / Timing Role: High-current 3-state buffer providing fail-safe isolation between MCU and high-side switch drivers during sleep/wake transitions. Use Value: IOFF blocks reverse current when MCU is powered off but battery remains live; −40 °C to +125 °C rating meets AEC-Q100 Grade 2 thermal requirements. |
Use Scenario: Conditioning digital stimulus signals from a 3.3 V pattern generator before injecting into DUTs requiring 5 V logic thresholds (e.g., legacy ASIC validation). IC Role / Device Role / Timing Role: Precision waveform shaping buffer with matched propagation delays (<1.5 ns skew) ensuring deterministic timing across parallel test channels. Use Value: Maintains nanosecond-level timing correlation across 4-channel stimulus paths; 5.5 V input tolerance protects generator outputs from reflected DUT transients. |
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 |
|---|---|---|---|
| SN74LVC125APWR | TI part in TSSOP14 (SOT402-1); identical VCC range (1.65–3.6 V), but no 1.2 V operation; IOFF supported; slightly higher ICC (max 40 μA vs. 10 μA). | Not rated for 1.2 V operation - unsuitable for ultra-low-power battery-backed subsystems where 74LVC125AD/AUJ operates at 1.2 V. | Select when TSSOP footprint is preferred and 1.2 V operation is unnecessary; verify thermal derating (7.3 mW/K above 81 °C) versus SO14's 10.1 mW/K above 100 °C. |
| 74ALVC125MTCX | ON Semiconductor part in TSSOP14; supports 2.3–3.6 V only; faster tpd (0.7 ns typ at 3.3 V); no IOFF; HBM ESD = 2000 V same. | Lacks IOFF - cannot safely isolate unpowered rails; limited to mid- to high-voltage domains; not suitable for partial power-down designs. | Choose only for speed-critical applications where power sequencing is fully controlled and 1.2–2.2 V operation is not required. |
Compared with SN74LVC125APWR and 74ALVC125MTCX, the 74LVC125AD/AUJ uniquely supports 1.2 V operation and guaranteed IOFF functionality - critical for energy-harvesting sensors and fail-safe automotive modules where rail sequencing and back-current prevention are mandatory design constraints.
Availability
74LVC125AD/AUJ is available at Aetrix Electronics and suitable for industrial bus interface, microcontroller GPIO expansion, automotive body control modules, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for 74LVC125AD/AUJ 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 focused on essential efficiency technologies - delivering high-performance, reliable logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVC125AD/AUJ belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for robust voltage translation and mixed-supply system interoperability in space- and power-constrained embedded applications.
FAQ
What is the minimum supply voltage for reliable operation of the 74LVC125AD/AUJ?
The 74LVC125AD/AUJ is fully specified down to 1.2 V supply voltage per Nexperia's Rev. 12 datasheet. At 1.2 V, it maintains functional operation with VIH = 1.08 V min and VOL ≤ 0.12 V max at IO = 100 μA. This enables compatibility with emerging ultra-low-power microcontrollers and energy-harvesting subsystems where 1.8 V logic is not viable.
Does the 74LVC125AD/AUJ support true bidirectional level translation?
No - the 74LVC125AD/AUJ is a unidirectional buffer (A → Y). While its inputs tolerate 0–5.5 V and outputs drive 5 V-tolerant loads, it lacks automatic direction control or bus turnaround logic. For bidirectional translation, discrete dual-rail solutions or dedicated transceivers like 74LVC4245 are required. The 74LVC125AD/AUJ excels at fixed-direction voltage domain bridging.
How does the IOFF feature protect the 74LVC125AD/AUJ during power sequencing?
When VCC = 0 V, the IOFF circuitry forces all outputs into high-impedance state and limits leakage to ±10 μA maximum, even if 5.5 V is applied to inputs or outputs. This prevents damaging backflow current from live 5 V buses into an unpowered 74LVC125AD/AUJ, satisfying IEC 61000-4-2 and JESD78 partial power-down requirements in multi-rail systems.
Can the 74LVC125AD/AUJ drive standard 50 Ω transmission lines?
Yes - at VCC = 3.0 V, the 74LVC125AD/AUJ delivers ±24 mA output drive, sufficient to drive terminated 50 Ω lines (requiring ~100 mA peak for 5 V swing). With 5 V-tolerant outputs and 1.0–4.8 ns propagation delay, it supports clean edge rates on short-run PCB traces up to ~15 cm without added termination.
Is the 74LVC125AD/AUJ automotive-qualified?
No - the 74LVC125AD/AUJ is not AEC-Q200 qualified. Although it operates from −40 °C to +125 °C and meets industrial reliability standards, Nexperia explicitly states in Section 14 of the datasheet that non-automotive-qualified products are not tested to automotive requirements. Use in automotive applications requires customer validation and full liability assumption.
74LVC125AD/AUJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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-SO
74LVC125AD/AUJ FAQ
1.How can I place an order for 74LVC125AD/AUJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC125AD/AUJ 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 74LVC125AD/AUJ reliable?
The price and inventory of 74LVC125AD/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC125AD/AUJ is usually 5 days.
3.What payment methods are accepted for 74LVC125AD/AUJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC125AD/AUJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC125AD/AUJ?
74LVC125AD/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC125AD/AUJ 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 74LVC125AD/AUJ?
For technical support, including 74LVC125AD/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC125AD/AUJ requirements.
6.How does Aetrix verify that 74LVC125AD/AUJ is sourced from the original manufacturer or authorized distributors?
All 74LVC125AD/AUJ 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 74LVC125AD/AUJ meets industry standards.
7.What is the process for return or replacement of 74LVC125AD/AUJ?
All 74LVC125AD/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC125AD/AUJ, 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 74LVC125AD/AUJ part is unused and in its original packaging.
Return procedure for 74LVC125AD/AUJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC125AD/AUJ 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
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…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
