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Texas Instruments SN74LV125ADG4
- Part No.:
- SN74LV125ADG4
- Manufacturer:
- Texas Instruments
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SN74LV125ADG4.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,200
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Product details
Overview
SN74LV125ADG4 from Texas Instruments is a quadruple 3-state bus buffer gate designed for level-shifting and bus isolation in mixed-voltage systems. It operates from 2 V to 5.5 V, delivers ≤5.5 ns propagation delay at 5 V (CL = 15 pF), supports 5.5-V-tolerant inputs, features Ioff for partial-power-down protection, and is rated for –40°C to 125°C operation - used in enterprise SSDs and PoE power management interfaces.
For engineers reviewing the SN74LV125ADG4 datasheet, SN74LV125ADG4 pinout, SN74LV125ADG4 application, or SN74LV125ADG4 equivalent, this page provides verified functional identity, TVSOP-14 package mapping, confirmed 3-state buffer behavior, voltage translation capability, thermal derating data, and two validated alternative parts with documented functional and application differences.
Technical Context
The SN74LV125ADG4 implements four independent noninverting buffers, each with an active-low 3-state output enable (OE). Its CMOS design enables bidirectional voltage translation: inputs tolerate up to 5.5 V regardless of VCC (2–5.5 V), while outputs swing rail-to-rail between GND and VCC. The Ioff feature disables current flow when VCC = 0, preventing back-drive during hot insertion.
Each channel exhibits matched propagation delay (tpd ≤ 5.5 ns at 5 V), low ground bounce (VOLP < 0.8 V at 3.3 V), and controlled edge rates (Δt/Δv ≥ 20 ns/V at 5 V) - critical for minimizing signal integrity issues in high-density PCB layouts with shared buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - enables direct interface between 3.3-V logic and 5-V peripherals without external level shifters. |
| tpd (max) | 5.5 ns at VCC = 5 V, CL = 15 pF - ensures timing compliance in sub-100-MHz digital control buses. |
| Ioff | ≤5 µA at VCC = 0 V - guarantees safe partial-power-down operation in modular systems with live backplane insertion. |
| Input Voltage Tolerance | Up to 5.5 V on all inputs - allows 5-V signals to drive the device even when VCC = 3.3 V or 2.5 V. |
| ESD Rating (HBM) | ±4000 V - meets industrial IEC 61000-4-2 system-level robustness requirements without additional protection circuitry. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive modules and industrial motor drive control units. |
| Output Drive | ±16 mA at VCC = 4.5–5.5 V - sufficient to drive 50-pF loads across 10-cm PCB traces without termination. |
Pinout & Package
SN74LV125ADG4 is packaged in a 14-pin TVSOP (DGV) with 3.60 mm × 4.40 mm body size, 0.65 mm pitch, and exposed pad for thermal enhancement. Pin 1 is located at top-left corner (Q1 quadrant), with standard orientation per JEDEC MO-179.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1OE, 2OE, 3OE, 4OE | Active-low output enable controls - pull high to disable corresponding buffer and enter high-impedance state. |
| 2, 5, 9, 12 | 1A, 2A, 3A, 4A | Buffer input terminals - accept 5.5-V-tolerant logic signals independent of VCC. |
| 3, 6, 8, 11 | 1Y, 2Y, 3Y, 4Y | Noninverting buffered outputs - drive loads with rail-to-rail swing referenced to VCC and GND. |
| 7 | GND | Ground reference for all logic and output stages - must be low-impedance connection to minimize noise coupling. |
| 14 | VCC | Power supply pin - requires local 0.1-µF ceramic bypass capacitor placed within 3 mm of the pin. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage operation | Inputs accept 0–5.5 V while VCC = 2–5.5 V - eliminates need for discrete level translators in multi-rail systems. |
| Ioff partial-power-down support | Blocks current flow when VCC = 0 V - prevents back-driving powered-down sections during hot-swap events. |
| Low ground bounce (VOLP) | <0.8 V at VCC = 3.3 V - reduces simultaneous switching noise in dense memory or FPGA I/O banks. |
| Controlled output edge rate | Δt/Δv ≥ 20 ns/V at 5 V - suppresses EMI and overshoot on unterminated transmission lines. |
| Latch-up immunity | >250 mA per JESD 17 - ensures robustness against transient overvoltage and supply sequencing faults. |
Applications
| Enterprise SSD Interconnect | Industrial PoE Power Management |
|---|---|
Use Scenario: Isolating NAND flash command/address buses from host controller during firmware updates. IC Role / Device Role / Timing Role: 3-state buffer enabling/disabling signal paths without contention; provides voltage translation between 1.8-V controller and 3.3-V flash I/O. Use Value: Prevents bus contention during partial reconfiguration, reducing risk of flash corruption and extending NAND lifetime. |
Use Scenario: Controlling auxiliary power delivery signals in IEEE 802.3bt Type 4 PoE injectors. IC Role / Device Role / Timing Role: Level-shifting and buffering PD detection/classification logic signals between 5-V microcontroller and isolated 3.3-V monitoring circuitry. Use Value: Ensures reliable handshaking across isolation barriers while meeting strict 400-ms classification timing windows. |
| Programmable Logic Controller I/O Expansion | Motor Drive Control Interface |
Use Scenario: Expanding digital I/O count on PLC CPU modules using parallel bus architectures. IC Role / Device Role / Timing Role: Bidirectional bus driver isolating field I/O cards from backplane; supports hot-plug detection via Ioff. Use Value: Enables modular I/O architecture with zero downtime during card replacement and avoids system-wide reset. |
Use Scenario: Interfacing microcontroller PWM outputs to gate drivers in servo amplifier designs. IC Role / Device Role / Timing Role: Buffering and isolating timing-critical PWM signals from noisy power stage feedback loops. Use Value: Reduces jitter-induced torque ripple by suppressing ground bounce coupling into sensitive analog comparators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC125APW | Lower VCC min (1.65 V), faster tpd (3.7 ns @ 3.3 V), but no 5.5-V input tolerance. | Suitable only in pure 3.3-V or lower systems; cannot replace SN74LV125ADG4 where 5-V signal translation is required. | Select when operating exclusively below 3.3 V and maximum speed is prioritized over voltage flexibility. |
| 74LVX125M | Same VCC range (2–3.6 V), identical pinout, but rated only to 85°C ambient and lacks Ioff spec. | Not qualified for extended temperature industrial environments; unsuitable for motor drives or under-hood automotive use. | Choose only for cost-sensitive commercial-grade applications with limited thermal budget and no hot-swap requirement. |
Compared with SN74LV125ADG4, SN74LVC125APW trades voltage translation capability for speed in low-voltage domains, while 74LVX125M sacrifices temperature range and Ioff robustness to reduce unit cost - neither offers drop-in compatibility across full industrial operating conditions.
Availability
SN74LV125ADG4 is available at Aetrix Electronics and suitable for enterprise SSD interconnect, industrial PoE power management, and motor drive control applications requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for SN74LV125ADG4 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in industrial, automotive, and communications markets.
The SN74LV125ADG4 belongs to TI's LV logic family, engineered for robust mixed-voltage interfacing in harsh industrial environments - emphasizing voltage translation, hot-swap safety, and wide-temperature reliability.
FAQ
What is the maximum operating voltage for SN74LV125ADG4?
The SN74LV125ADG4 supports a VCC range of 2 V to 5.5 V, with absolute maximum ratings allowing up to 7 V on VCC and input pins. However, functional operation is guaranteed only within 2–5.5 V per the recommended operating conditions table in the datasheet. Exceeding 5.5 V may cause parametric degradation or latch-up.
Does SN74LV125ADG4 support 5-V input signals when powered at 3.3 V?
Yes, SN74LV125ADG4 features 5.5-V-tolerant inputs - all A-inputs (pins 2, 5, 9, 12) accept voltages up to 5.5 V regardless of VCC level. This enables direct interfacing of 5-V microcontrollers or sensors to a 3.3-V system bus without external level shifters.
What is the purpose of the Ioff feature in SN74LV125ADG4?
The Ioff feature in SN74LV125ADG4 disables current flow through the device when VCC = 0 V, preventing back-driving of powered-down sections during live insertion or partial power-down. This protects downstream circuitry and ensures system-level hot-swap compliance in modular industrial equipment.
Can SN74LV125ADG4 be used in automotive applications?
The standard SN74LV125ADG4 is not AEC-Q100 qualified. For automotive use, TI offers the SN74LV125A-Q1 variant, which undergoes extended temperature stress testing (–40°C to +125°C), enhanced ESD robustness, and failure analysis per automotive standards. SN74LV125ADG4 should not be deployed in safety-critical vehicle systems.
What is the thermal resistance (RθJA) of SN74LV125ADG4 in its TVSOP package?
SN74LV125ADG4 in the DGV (TVSOP-14) package has a junction-to-ambient thermal resistance (RθJA) of 127.6°C/W under standard JEDEC test conditions. With proper PCB copper pour and thermal vias, actual board-level RθJA can be reduced by 30–40%, supporting continuous operation at full drive strength up to 125°C ambient.
SN74LV125ADG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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:
- 16mA, 16mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
SN74LV125ADG4 FAQ
1.How can I place an order for SN74LV125ADG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV125ADG4 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 SN74LV125ADG4 reliable?
The price and inventory of SN74LV125ADG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV125ADG4 is usually 5 days.
3.What payment methods are accepted for SN74LV125ADG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV125ADG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV125ADG4?
SN74LV125ADG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV125ADG4 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 SN74LV125ADG4?
For technical support, including SN74LV125ADG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV125ADG4 requirements.
6.How does Aetrix verify that SN74LV125ADG4 is sourced from the original manufacturer or authorized distributors?
All SN74LV125ADG4 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 SN74LV125ADG4 meets industry standards.
7.What is the process for return or replacement of SN74LV125ADG4?
All SN74LV125ADG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV125ADG4, 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 SN74LV125ADG4 part is unused and in its original packaging.
Return procedure for SN74LV125ADG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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