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NXP Semiconductors 74LVT125PW,112
- Part No.:
- 74LVT125PW,112
- Manufacturer:
- NXP Semiconductors
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVT125PW,112.pdf
- Description:
- IC BUFF NON-INVERT 3.6V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:15,942
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Product details
Overview
74LVT125PW,112 from Nexperia is a 3.3 V quad non-inverting 3-state buffer with bus-hold inputs and IOFF partial power-down protection. It provides +64 mA sink / −32 mA source drive, operates from 2.7 V to 3.6 V, tolerates 5.5 V inputs, and delivers sub-4 ns propagation delay at 3.3 V in TSSOP14 package. It serves as a level-translating bus interface in high-speed digital backplanes and FPGA I/O expansion.
For engineers reviewing the 74LVT125PW,112 datasheet, 74LVT125PW,112 pinout, 74LVT125PW,112 application, or 74LVT125PW,112 equivalent, this page delivers verified pin functions, real-world timing specs, bus-hold behavior, IOFF leakage data, and validated drop-in alternatives for industrial control and telecom board design.
Technical Context
This BiCMOS device implements four independent non-inverting buffers, each controlled by an active-low 3-state enable (nOE). Each input features integrated bus-hold circuitry that maintains logic state without external pull-ups, and the IOFF circuit disables outputs during power-down to block backflow current when VCC = 0 V.
It supports live insertion/extraction and direct TTL-level interfacing while maintaining overvoltage tolerance up to 5.5 V on all inputs. Propagation delays are specified down to 1.0 ns typical (tPLH/tPHL) and enable/disable times (tPZH/tPLZ) are under 3.7 ns typical at 3.3 V, enabling use in 100+ MHz bus systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - ensures compatibility with 3.3 V LVTTL and mixed-voltage FPGA I/O banks |
| Output Drive | +64 mA sink / −32 mA source - drives heavy capacitive loads (e.g., >10 pF per stub) without signal degradation |
| Input Voltage Range | 0 V to 5.5 V - enables safe interfacing with 5 V legacy peripherals without level shifters |
| Propagation Delay | 1.0–4.0 ns (typ/max at 3.3 V) - supports >100 MHz clocked bus operation with deterministic timing margins |
| IOFF Leakage | ±100 μA at VCC = 0 V - prevents damaging back-current during hot-swap or partial power-down sequences |
| Bus-Hold Current | ±75 to ±150 μA - actively retains logic state on floating inputs, eliminating need for 10 kΩ pull-up/down resistors |
| Operating Temperature | −40 °C to +85 °C - qualified for industrial-grade embedded control and base station equipment |
Pinout & Package
TSSOP14 (SOT402-1) package: plastic thin shrink small outline, 14-lead, 4.4 mm body width, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (active LOW) | Independent 3-state enable per buffer; HIGH forces output into high-impedance OFF-state |
| 2, 5, 9, 12 | nA (data input) | Buffer input with bus-hold; retains last valid logic state when un-driven |
| 3, 6, 8, 11 | nY (data output) | Non-inverting buffered output; capable of driving 5 V-tolerant buses with no current loading |
| 7 | GND | Ground reference (0 V); required for proper bus-hold and IOFF functionality |
| 14 | VCC | 3.3 V supply input; powers internal BiCMOS circuitry and enables IOFF protection when ramped down |
Key Features
| Feature | Design Value |
|---|---|
| IOFF Partial Power-Down | Blocks backflow current when VCC = 0 V - enables safe hot-plug operation in modular backplanes |
| Integrated Bus-Hold | Eliminates external pull-up resistors on unused inputs - reduces BOM count and PCB area in dense FPGA I/O interfaces |
| 5.5 V Input Tolerance | Accepts 5 V logic signals directly - simplifies migration from 5 V legacy subsystems without level translators |
| Live Insertion Support | Withstands voltage transients during board insertion - meets IEC 61000-4-2 ESD immunity requirements for field-replaceable modules |
| Latch-Up Immunity | >500 mA per JESD78 Class II Level B - ensures robustness in noisy industrial environments with ground bounce |
Applications
| Industrial PLC Backplane Interface | FPGA I/O Expansion Module |
|---|---|
Use Scenario: Interfacing multiple I/O cards to a central controller via shared 3.3 V parallel bus with hot-swap capability. IC Role / Device Role / Timing Role: Quad buffer isolates card-specific address/data lines and enables/disables each segment independently using nOE controls. Use Value: IOFF prevents back-current damage during card insertion/removal; bus-hold maintains stable bus state when cards are absent. |
Use Scenario: Extending FPGA GPIO count to drive external sensors, displays, and actuators across mixed-voltage domains. IC Role / Device Role / Timing Role: Level-translating buffer between 3.3 V FPGA I/O banks and 5 V peripheral interfaces with precise timing control. Use Value: 5.5 V input tolerance allows direct connection to 5 V sensors; sub-4 ns delay preserves setup/hold margins at 100 MHz. |
| Telecom Line Card Data Multiplexing | Automated Test Equipment (ATE) Signal Routing |
Use Scenario: Multiplexing diagnostic data streams from multiple line cards onto a shared maintenance bus in optical transport equipment. IC Role / Device Role / Timing Role: 3-state buffer enables time-division sharing of bidirectional bus segments under microcontroller control. Use Value: +64 mA sink drive handles long traces and multiple receivers; low VOL (0.4 V max at 64 mA) ensures noise margin compliance. |
Use Scenario: Routing test signals between DUT interface connectors and instrument channels in modular ATE racks. IC Role / Device Role / Timing Role: Bidirectional bus driver with fast enable/disable (tPZH/tPLZ < 4.7 ns) for synchronized channel switching. Use Value: Fast 3-state transition minimizes signal glitches during reconfiguration; latch-up immunity prevents failure under ESD stress. |
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 |
|---|---|---|---|
| SN74LVC125APW | Lower drive (+24 mA/−24 mA), 1.65–3.6 V supply, no bus-hold or IOFF | Suitable only for light-load, single-supply 3.3 V systems without hot-swap needs | Select when cost sensitivity outweighs drive strength and robustness requirements |
| 74ALVC125PW | Same 14-pin TSSOP, +24 mA/−24 mA drive, 1.65–3.6 V, includes bus-hold but no IOFF | Acceptable for static 3.3 V boards where partial power-down is not required | Choose if bus-hold is needed but IOFF is unnecessary and lower power consumption is prioritized |
Compared with SN74LVC125APW and 74ALVC125PW, the 74LVT125PW,112 delivers higher drive strength, guaranteed 5.5 V input tolerance, and critical IOFF protection-making it uniquely suited for industrial hot-swap and mixed-voltage backplane designs where reliability under partial power-down is mandatory.
Availability
74LVT125PW,112 is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA I/O expansion modules, telecom line card multiplexing, and automated test equipment signal routing requiring stable component supply across extended temperature and mixed-voltage conditions.
Supply support for 74LVT125PW,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 manufacturability in industrial, automotive, and computing applications.
The 74LVT series targets high-speed 3.3 V bus interface applications, emphasizing robustness in partial-power-down scenarios, live insertion, and mixed-voltage interoperability-key for modular, field-upgradeable electronic systems.
FAQ
Does 74LVT125PW,112 support hot-plug insertion?
Yes. Its IOFF circuitry disables outputs and limits leakage to ±100 μA when VCC = 0 V, preventing damaging backflow current during live insertion or extraction. This feature is validated per JESD78 Class II Level B latch-up testing and supports compliant hot-swap implementation in modular backplanes.
Can 74LVT125PW,112 safely interface with 5 V logic inputs?
Yes. All inputs tolerate up to 5.5 V regardless of VCC level, enabling direct connection to 5 V TTL or CMOS outputs without external level-shifting components. This is confirmed by absolute maximum ratings (VI = −0.5 V to +7.0 V) and functional operation verified across the full −40 °C to +85 °C range.
What is the purpose of the bus-hold feature on the inputs?
The bus-hold circuit actively maintains the last valid logic state on each input (nA) when left floating, drawing ±75–150 μA to hold HIGH or LOW. This eliminates the need for external 10 kΩ pull-up/pull-down resistors, reducing component count and PCB space in high-density FPGA or microcontroller I/O expansion designs.
How does the 3-state enable (nOE) behave during power-up?
The device features power-up 3-state: outputs remain in high-impedance until VCC reaches a valid operating level (~2.0 V), preventing bus contention during power sequencing. This behavior is inherent to the BiCMOS architecture and is guaranteed across −40 °C to +85 °C ambient temperature.
74LVT125PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVT
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74LVT125PW,112 FAQ
1.How can I place an order for 74LVT125PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT125PW,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 74LVT125PW,112 reliable?
The price and inventory of 74LVT125PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT125PW,112 is usually 5 days.
3.What payment methods are accepted for 74LVT125PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT125PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT125PW,112?
74LVT125PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT125PW,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 74LVT125PW,112?
For technical support, including 74LVT125PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT125PW,112 requirements.
6.How does Aetrix verify that 74LVT125PW,112 is sourced from the original manufacturer or authorized distributors?
All 74LVT125PW,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 74LVT125PW,112 meets industry standards.
7.What is the process for return or replacement of 74LVT125PW,112?
All 74LVT125PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT125PW,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 74LVT125PW,112 part is unused and in its original packaging.
Return procedure for 74LVT125PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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