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NXP Semiconductors 74LVC125APW/AUJ
- Part No.:
- 74LVC125APW/AUJ
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVC125APW/AUJ.pdf
- Description:
- IC BUF NON-INVERT 3.6V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,744
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Product details
Overview
74LVC125APW/AUJ from Nexperia is a quad 3-state buffer/line driver with 5 V tolerant inputs and outputs, operating across 1.2 V to 3.6 V supply, supporting mixed-voltage translation between 3.3 V and 5 V systems. It features Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and is rated for -40 °C to +125 °C operation in TSSOP14 packaging.
For engineers reviewing the 74LVC125APW/AUJ datasheet, 74LVC125APW/AUJ pinout, 74LVC125APW/AUJ application, or 74LVC125APW/AUJ equivalent, this device serves as a voltage-level translating buffer in bus interface, memory address driving, and I/O expansion circuits where low-power, high-speed, and robust off-state isolation are required.
Technical Context
The 74LVC125APW/AUJ implements four independent non-inverting buffers, each with an active-low 3-state enable (nOE). Its IOFF circuitry disables outputs and blocks backflow current when VCC = 0 V, enabling safe hot-insertion and partial power-down in multi-rail systems. Schmitt-trigger inputs accept slow-rising signals and tolerate input voltages up to 5.5 V regardless of VCC level.
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), ensuring interoperability with legacy TTL and modern low-voltage CMOS logic families. Propagation delay is as low as 1.0 ns at VCC = 3.0–3.6 V, with output skew ≤1.5 ns across all four channels.
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 domains without level shifters. |
| Input Voltage Tolerance | Up to 5.5 V - Allows connection to 5 V sources while powered from 3.3 V or lower, enabling bidirectional voltage translation. |
| Propagation Delay (tpd) | 1.0 ns (min) at VCC = 3.0–3.6 V - Supports high-speed data routing in memory buses and peripheral interfaces. |
| IOFF Leakage Current | ±10 μA max at VCC = 0 V - Prevents damaging backflow current during power sequencing or hot-swap events. |
| Operating Temperature | -40 °C to +125 °C - Qualified for industrial and extended-temperature embedded control applications. |
| ESD Protection | HBM >2000 V, CDM >1000 V - Ensures robust handling and board-level reliability in automated assembly and field use. |
Pinout & Package
TSSOP14 package (SOT402-1): plastic thin shrink small outline, 14 leads, 4.4 mm body width, 0.65 mm pitch, 1.2 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (active-low enable) | Independent 3-state control per buffer; LOW enables output, HIGH forces high-impedance state. |
| 2, 5, 9, 12 | nA (data input) | Non-inverting input for each buffer; accepts 5.5 V max regardless of VCC. |
| 3, 6, 8, 11 | nY (data output) | Buffered, 3-state output; drives loads up to ±24 mA at VCC = 3.0 V. |
| 7 | GND | Ground reference for all I/O and internal circuitry; must be connected to system ground plane. |
| 14 | VCC | Primary supply rail; powers internal logic and output drivers; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant I/O | Inputs and outputs withstand 5.5 V even when VCC = 1.2 V - eliminates external level translators in mixed-voltage designs. |
| IOFF partial power-down | Outputs disable and block current flow when VCC = 0 V - prevents backfeeding and ensures safe multi-supply sequencing. |
| Schmitt-trigger inputs | Hysteresis ≥0.3 V typical - rejects noise on slow-rising clock or control lines and improves signal integrity in noisy environments. |
| Low dynamic power | CPD = 12.4 pF at VCC = 3.3 V - reduces switching power consumption in high-frequency bus applications. |
| JEDEC-compliant voltage ranges | Validated across JESD8-7A, JESD8-5A, and JESD8-C/JESD36 - guarantees interoperability with standard logic families. |
Applications
| Industrial Bus Interface | Memory Address Buffering |
|---|---|
|
Use Scenario: Isolating and driving address/data lines between a 3.3 V microcontroller and legacy 5 V peripherals in programmable logic controllers. IC Role / Device Role / Timing Role: Quad buffer provides direction-controlled signal conditioning and voltage translation on parallel control buses. Use Value: Eliminates need for discrete level-shifting components while maintaining <1.0 ns propagation delay for timing-critical address setup. |
Use Scenario: Driving 16-bit address lines from a low-voltage FPGA to SRAM or EPROM devices requiring 5 V-compatible inputs. IC Role / Device Role / Timing Role: Acts as a non-inverting line driver with independent 3-state control per channel for address multiplexing. Use Value: 5.5 V input tolerance allows direct connection to 5 V memory inputs; IOFF prevents bus contention during FPGA reconfiguration. |
| I/O Expansion Hub | Hot-Swappable Module Interface |
|
Use Scenario: Expanding GPIO count on a 1.8 V SoC by interfacing with external 3.3 V sensors and actuators via shared parallel bus. IC Role / Device Role / Timing Role: Translates and buffers bidirectional I/O signals while enabling/disabling sections via individual nOE pins. Use Value: Independent enable control per buffer allows selective activation of sensor groups, reducing standby current and EMI. |
Use Scenario: Interfacing hot-pluggable daughter cards to a mainboard with strict power sequencing requirements. IC Role / Device Role / Timing Role: Provides 3-state isolation and IOFF protection between card and host during insertion/removal. Use Value: IOFF leakage <±10 μA at VCC = 0 V prevents backdrive damage to powered host logic during live insertion. |
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 |
|---|---|---|---|
| 74LVC125AD | SO14 package (SOT108-1); same electrical specs but larger footprint and higher thermal resistance (10.1 mW/K derating above 100 °C). | Better suited for prototyping or through-hole compatible PCBs; less suitable for space-constrained high-density layouts. | Select 74LVC125AD if board layout requires SOIC compatibility or manual soldering; otherwise prefer 74LVC125APW/AUJ for compactness and thermal performance. |
| SN74LVC125APWR | TI-manufactured; identical function and pinout; wider VCC range (1.65–3.6 V only), no 1.2 V operation support. | Not usable in 1.2 V or 1.8 V sub-domains; lacks full JESD8-7A compliance below 1.65 V. | Choose SN74LVC125APWR only if sourcing from TI's authorized channels is required; verify 1.2 V operation is unnecessary in target design. |
Compared with 74LVC125AD and SN74LVC125APWR, the 74LVC125APW/AUJ uniquely supports 1.2 V operation, offers superior thermal dissipation in TSSOP14, and maintains full JEDEC compliance across all specified voltage bands - making it optimal for miniaturized, multi-rail industrial systems.
Availability
74LVC125APW/AUJ is available at Aetrix Electronics and suitable for industrial bus interface, memory address buffering, and I/O expansion applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature extremes.
Supply support for 74LVC125APW/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 high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74LVC125A family was designed specifically for voltage-level translation and bus isolation in mixed-supply digital systems, emphasizing low power, robust ESD performance, and seamless integration across legacy and next-generation logic families.
FAQ
What is the minimum supply voltage supported by the 74LVC125APW/AUJ?
The 74LVC125APW/AUJ operates down to 1.2 V, as confirmed in Table 5 (Recommended Operating Conditions) of the Nexperia datasheet Rev. 12. This enables direct interface with ultra-low-voltage domains such as 1.2 V FPGA I/O banks and advanced microcontrollers without level shifting. Operation below 1.2 V is not guaranteed and may result in undefined logic states or increased propagation delay.
Does the 74LVC125APW/AUJ support true 5 V input tolerance?
Yes - the 74LVC125APW/AUJ accepts input voltages up to 5.5 V regardless of VCC level, as specified in Table 4 (Limiting Values) and Table 5. This allows direct connection to 5 V sources while powered from 1.2 V to 3.6 V, enabling reliable bidirectional voltage translation without external components.
How does the IOFF feature protect the 74LVC125APW/AUJ during power-down?
The IOFF circuitry in the 74LVC125APW/AUJ disables outputs and limits power-off leakage current to ±10 μA maximum when VCC = 0 V, preventing damaging backflow current from live 5 V buses into unpowered logic. This is validated in Table 9 (Static Characteristics) and enables safe hot-swap and partial power-down operation in multi-rail systems.
What is the propagation delay of the 74LVC125APW/AUJ at 3.3 V supply?
At VCC = 3.3 V and Tamb = 25 °C, the typical propagation delay (tpd) of the 74LVC125APW/AUJ is 2.5 ns, with a maximum of 4.8 ns over -40 °C to +85 °C and 6.0 ns over -40 °C to +125 °C (Table 7). This ensures timing-critical bus applications meet setup/hold margins even under worst-case thermal and voltage conditions.
Is the 74LVC125APW/AUJ pin-compatible with other packages in the 74LVC125A family?
Yes - all 74LVC125A variants (including 74LVC125APW/AUJ, 74LVC125AD, 74LVC125ABQ, and 74LVC125ABZ) share identical pin functions and logic behavior. However, physical pinouts differ across packages (TSSOP14 vs SO14 vs QFN), so PCB layout must match the specific package variant; only the TSSOP14 (SOT402-1) applies to 74LVC125APW/AUJ.
74LVC125APW/AUJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
74LVC125APW/AUJ FAQ
1.How can I place an order for 74LVC125APW/AUJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC125APW/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 74LVC125APW/AUJ reliable?
The price and inventory of 74LVC125APW/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC125APW/AUJ is usually 5 days.
3.What payment methods are accepted for 74LVC125APW/AUJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC125APW/AUJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC125APW/AUJ?
74LVC125APW/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC125APW/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 74LVC125APW/AUJ?
For technical support, including 74LVC125APW/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC125APW/AUJ requirements.
6.How does Aetrix verify that 74LVC125APW/AUJ is sourced from the original manufacturer or authorized distributors?
All 74LVC125APW/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 74LVC125APW/AUJ meets industry standards.
7.What is the process for return or replacement of 74LVC125APW/AUJ?
All 74LVC125APW/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC125APW/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 74LVC125APW/AUJ part is unused and in its original packaging.
Return procedure for 74LVC125APW/AUJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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