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Nexperia USA Inc. 74ALVC125BQ,115
- Part No.:
- 74ALVC125BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74ALVC125BQ,115.pdf
- Description:
- IC BUF NON-INVERT 3.6V 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,845
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Product details
Overview
74ALVC125BQ,115 from Nexperia is a quad non-inverting 3-state buffer/line driver in DHVQFN14 (SOT762-1) package, operating from 1.65 V to 3.6 V supply, featuring Schmitt-trigger inputs, IOFF partial power-down protection, and guaranteed operation from –40 °C to +125 °C. It enables bidirectional bus isolation in low-voltage digital systems such as industrial I/O controllers and FPGA peripheral interfaces.
For engineers reviewing the 74ALVC125BQ,115 datasheet, 74ALVC125BQ,115 pinout, 74ALVC125BQ,115 application, or 74ALVC125BQ,115 equivalent, key selection criteria include 3-state timing (tdis ≤ 4.6 ns at 3.6 V), IOFF leakage (< ±80 μA at VCC = 0 V), input overvoltage tolerance to 3.6 V, and thermal-enhanced QFN packaging for high-density PCB layouts.
Technical Context
This device implements four independent non-inverting buffers, each with active-low 3-state enable (nOE). Each channel accepts TTL-compatible inputs and delivers CMOS-level outputs with Schmitt-trigger hysteresis (typ. 0.3 V at VCC = 3.3 V), enabling robust noise immunity on slow-rising control lines.
The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current up to ±80 μA - critical for hot-swap and multi-rail partial-power-down architectures. Propagation delay (tpd) ranges from 1.1 ns (min) to 3.2 ns (max) at VCC = 3.0–3.6 V, with enable/disable times tightly specified across full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.65 V to 3.6 V - supports direct interface with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Propagation Delay (tpd) | 1.1–3.2 ns at VCC = 3.0–3.6 V - ensures sub-4 ns signal path timing for high-speed bus buffering in FPGA/CPU peripheral interconnects. |
| IOFF Leakage Current | < ±80 μA at VCC = 0 V - prevents damaging back-current during system power sequencing or partial shutdown. |
| Input Hysteresis | Typ. 0.3 V at VCC = 3.3 V - rejects noise on slow-rising enable or data lines in electrically noisy industrial environments. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive ECUs, industrial motor drives, and base station control modules. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - withstands handling and board-level ESD events without latch-up or parametric shift. |
| Output Drive Strength | ±24 mA at VCC = 3.0 V - drives 50 pF loads with <3.2 ns rise/fall while maintaining VOL ≤ 0.55 V and VOH ≥ 2.2 V. |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 × 3.0 × 0.85 mm body, no leads, exposed thermal pad (non-soldered by default), 14 terminals in quad arrangement with terminal 1 index area marked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (1OE–4OE) | Active-low output enable per buffer - asserts high-impedance state when HIGH; enables bus sharing and load isolation. |
| 2, 5, 9, 12 | nA (1A–4A) | Data input per buffer - Schmitt-triggered to tolerate slow edges and reject noise on control/data lines. |
| 3, 6, 8, 11 | nY (1Y–4Y) | Non-inverting buffered output per channel - drives downstream logic or transmission lines with rail-to-rail swing. |
| 7 | GND | Ground reference (0 V) - must be connected to system ground plane for stable noise margin and thermal dissipation. |
| 14 | VCC | Positive supply - powers all four buffers; IOFF remains active even when VCC = 0 V. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 1.65 V to 3.6 V - eliminates need for separate voltage translators when interfacing mixed-voltage ASICs, FPGAs, and microcontrollers. |
| IOFF Partial Power-Down | Blocks backflow current < ±80 μA at VCC = 0 V - enables safe insertion/removal in live-backplane systems and multi-supply domain isolation. |
| Schmitt-Trigger Inputs | Hysteresis ≈ 0.3 V at VCC = 3.3 V - suppresses chatter on debounced switches, mechanical sensors, and long trace signals. |
| Thermal-Enhanced QFN | 0.85 mm profile with 2.5 × 3.0 mm footprint - improves thermal resistance (9.6 mW/K derating above 98 °C) vs. SO14/TSSOP alternatives. |
| High-Speed Timing | tdis ≤ 4.6 ns, ten ≤ 4.0 ns at VCC = 3.6 V - meets setup/hold timing budgets for 200+ MHz bus clocking in industrial PLCs and test equipment. |
Applications
| Industrial I/O Module | FPGA Peripheral Interface |
|---|---|
|
Use Scenario: Isolating and buffering digital I/O signals between a microcontroller and field-connected sensors/actuators in programmable logic controllers. IC Role / Device Role / Timing Role: Quad 3-state buffer provides direction-controlled signal routing and bus contention prevention on shared 8-bit parallel I/O lines. Use Value: IOFF protection prevents backfeed into powered-down MCU sections during maintenance; Schmitt inputs reject EMI from 24 V solenoid switching. |
Use Scenario: Driving configuration and status signals between an FPGA and external memory, ADCs, or communication transceivers on a high-density carrier board. IC Role / Device Role / Timing Role: Level-shifting buffer ensures clean 3.3 V logic transitions to off-FPGA devices while meeting tight tpd < 3.2 ns timing closure. Use Value: DHVQFN14 package saves >60% board area vs. SO14; 24 mA drive strength sustains signal integrity across 50 pF loads at 100 MHz. |
| Automotive Body Control Unit | Test & Measurement Equipment |
|
Use Scenario: Managing discrete ON/OFF commands from a body controller MCU to door lock actuators, mirror controls, and lighting drivers. IC Role / Device Role / Timing Role: Non-inverting buffer with independent OE pins enables synchronized activation of multiple loads while minimizing standby current. Use Value: –40 °C to +125 °C rating ensures reliability in under-dash environments; overvoltage-tolerant inputs survive load-dump transients up to 3.6 V. |
Use Scenario: Signal conditioning and fanout for trigger, clock, and data lines inside automated test equipment (ATE) mainframes and probe stations. IC Role / Device Role / Timing Role: 3-state capability allows dynamic reconfiguration of signal paths during test sequence execution without hardware rewiring. Use Value: Sub-4 ns disable time (tdis) enables precise pulse gating; low ICC (≤80 μA) reduces thermal drift in thermally sensitive calibration circuits. |
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 | TSSOP14 package (4.4 mm width); no exposed thermal pad; IOFF not specified; max tpd = 4.2 ns at 3.3 V. | Lacks thermal enhancement and guaranteed IOFF - unsuitable for partial-power-down systems or high-ambient industrial enclosures. | Select when board space permits larger TSSOP and thermal management is handled externally. |
| 74LVC125AD,118 | SO14 package (3.9 mm width); higher thermal resistance; Ptot derates at 10.1 mW/K above 100 °C vs. 9.6 mW/K for BQ. | Less efficient heat dissipation in compact, sealed enclosures - may require derating at >85 °C ambient. | Choose only if legacy SO14 footprint compatibility is mandatory and thermal budget allows. |
Compared with SN74LVC125APWR and 74LVC125AD,118, the 74ALVC125BQ,115 delivers superior thermal performance via DHVQFN14, guaranteed IOFF for live-insertion safety, and tighter timing specs - making it optimal for space-constrained, high-reliability embedded systems.
Availability
74ALVC125BQ,115 is available at Aetrix Electronics and suitable for industrial I/O modules, FPGA peripheral interfaces, automotive body control units, and test & measurement equipment requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for 74ALVC125BQ,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, reliable logic, analog, and MOSFET solutions optimized for efficiency, miniaturization, and robustness in industrial, automotive, and computing applications.
The ALVC logic family targets high-speed, low-voltage digital interfacing with enhanced noise immunity and power-down safety - specifically engineered for next-generation embedded control and signal routing where timing precision and thermal density matter.
FAQ
Is the 74ALVC125BQ,115 pin-compatible with standard 74LVC125 variants?
Yes - it shares identical pinout (SOT762-1 DHVQFN14) and logic function with other 74ALVC125 packages (SO14, TSSOP14), including matching terminal numbering, signal assignment, and electrical behavior. No layout redesign is needed when migrating from D or PW versions.
Does the IOFF feature require external circuitry to activate?
No - IOFF is fully internal and automatic. When VCC drops to 0 V, the output transistors are disabled regardless of nOE or nA states, limiting backflow current to ≤ ±80 μA without pull-ups, resistors, or control firmware intervention.
Can the 74ALVC125BQ,115 drive 5 V tolerant inputs?
No - its outputs swing rail-to-rail (0 V to VCC), and inputs tolerate up to 3.6 V regardless of VCC. To interface with 5 V logic, an external level shifter or resistor-based voltage divider is required; the device itself is not 5 V tolerant.
What is the recommended PCB layout for the thermal pad on SOT762-1?
The exposed pad (terminal 1 index area) has no electrical requirement. If soldered, it must remain floating or connect directly to GND - never to VCC or signal nets. Use thermal vias to inner ground planes for optimal heat transfer, but avoid solder wicking that lifts the package.
74ALVC125BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74ALVC
- 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:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74ALVC125BQ,115 FAQ
1.How can I place an order for 74ALVC125BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74ALVC125BQ,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 74ALVC125BQ,115 reliable?
The price and inventory of 74ALVC125BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVC125BQ,115 is usually 5 days.
3.What payment methods are accepted for 74ALVC125BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVC125BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74ALVC125BQ,115?
74ALVC125BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74ALVC125BQ,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 74ALVC125BQ,115?
For technical support, including 74ALVC125BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVC125BQ,115 requirements.
6.How does Aetrix verify that 74ALVC125BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74ALVC125BQ,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 74ALVC125BQ,115 meets industry standards.
7.What is the process for return or replacement of 74ALVC125BQ,115?
All 74ALVC125BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVC125BQ,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 74ALVC125BQ,115 part is unused and in its original packaging.
Return procedure for 74ALVC125BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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