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Texas Instruments SN74LVC1G125DBVT
- Part No.:
- SN74LVC1G125DBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SN74LVC1G125DBVT.pdf
- Description:
- IC BUFF NON-INVERT 5.5V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,195
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Product details
Overview
SN74LVC1G125 from Texas Instruments is a single 3-state bus buffer gate used for signal isolation and bidirectional bus control in low-voltage digital systems. It features true noninverting logic, 3.3V/5V supply compatibility (1.65–5.5V), ±24mA output drive at 3.3V, 3.7ns max propagation delay, and Ioff support for live insertion. It is commonly deployed in high-speed data acquisition interfaces and SSD internal signal routing.
For engineers reviewing the SN74LVC1G125 datasheet, SN74LVC1G125 pinout, SN74LVC1G125 application, or SN74LVC1G125 equivalent, key selection considerations include its ultra-small X2SON-5 (DPW) package, over-voltage tolerant inputs up to 5.5V, rail-to-rail output swing, Ioff-enabled partial power-down mode, and guaranteed 3-state behavior during power sequencing.
Technical Context
The SN74LVC1G125 implements a CMOS-based noninverting buffer with active-low 3-state enable (OE). Its input stage accepts voltages up to 5.5V independent of VCC, enabling level translation from 3.3V or 5V sources into lower-supply domains. The output stage uses balanced push-pull drivers capable of sourcing and sinking up to ±24mA at 3.3V while maintaining defined VOH/VOL across temperature.
It incorporates Ioff circuitry that disables all outputs when VCC = 0V, preventing back-drive current and supporting hot-plug operation. The device operates across –40°C to 125°C with guaranteed switching performance at CL = 30pF and supports robust ESD protection (2000V HBM, 1000V CDM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - Enables interoperability across 1.8V, 2.5V, 3.3V, and 5V logic domains. |
| Max Propagation Delay | 3.7ns at 3.3V, CL = 15pF - Supports >200MHz data rates in short-trace, low-capacitance interfaces. |
| Output Drive | ±24mA at 3.3V - Sufficient to drive multiple LVC loads or moderate PCB trace capacitance without external buffering. |
| Ioff Current | ±10μA max - Ensures negligible leakage during system power-down or hot-swap events. |
| Input Voltage Tolerance | Up to 5.5V regardless of VCC - Allows direct connection to 5V TTL or CMOS outputs without external level shifters. |
| ESD Rating | 2000V HBM, 1000V CDM - Meets industrial-grade handling requirements without additional protection circuitry. |
| Operating Temperature | –40°C to +125°C - Qualified for under-hood automotive, industrial motor control, and military radar subsystems. |
Pinout & Package
SN74LVC1G125DBVT uses the DPW (X2SON-5) package: 0.8mm × 0.8mm body, 0.5mm pitch, 5-terminal ultra-compact footprint ideal for space-constrained PCBs such as SSD modules and compact video transcoders.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low output enable | Drives Y high-impedance when high; ties to VCC via pullup for safe power-up state. |
| 2 - A | Data input | Noninverting input accepting 0–5.5V; compatible with TTL and CMOS logic families. |
| 3 - GND | Ground reference | Return path for all internal currents; must be low-impedance and adjacent to decoupling capacitor. |
| 4 - Y | 3-state buffered output | True replica of A when OE is low; high-Z when OE is high; drives ±24mA at 3.3V. |
| 5 - VCC | Power supply | Supplies core logic and output drivers; requires local 0.1μF ceramic bypass capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Over-voltage tolerant inputs | Accepts up to 5.5V on A/OE regardless of VCC - eliminates need for external level translators in mixed-supply systems. |
| Ioff partial power-down | Outputs fully disabled at VCC = 0V - prevents back-driving and enables hot-plug capability in modular systems. |
| Ultra-small X2SON-5 (DPW) | 0.64mm² footprint - reduces board area by >50% vs. SOT-23-5, critical for SSD and portable video infrastructure. |
| Guaranteed 3-state during power sequencing | OE tied to VCC via pullup ensures Y remains high-Z at power-up/down - avoids bus contention in multi-device systems. |
| Balanced CMOS output drive | Sources/sinks ±24mA symmetrically at 3.3V - maintains clean signal integrity with minimal overshoot on light loads. |
Applications
| SSD Internal Signal Routing | Video IP Transcoder Interface |
|---|---|
Use Scenario: Isolating control signals between NAND flash controller and DRAM buffer in M.2 NVMe SSDs. IC Role / Device Role / Timing Role: Single-directional 3-state buffer enabling shared bus arbitration and voltage domain bridging (3.3V ↔ 1.8V). Use Value: Prevents bus contention during firmware updates; leverages Ioff to avoid leakage when DRAM power rail is off. |
Use Scenario: Level-shifting GPIO and status lines between 5V video encoder ASIC and 3.3V ARM host processor. IC Role / Device Role / Timing Role: Noninverting bus buffer with 5.5V-tolerant inputs, translating TTL-level control signals without external resistors. Use Value: Eliminates discrete level shifter components; 3.7ns tpd preserves timing margin in real-time video pipeline control loops. |
| Military Radar Data Acquisition | Industrial Motor Control Interface |
Use Scenario: Conditioning ADC trigger and clock-enable signals in phased-array radar front-end modules. IC Role / Device Role / Timing Role: Low-skew, high-reliability buffer isolating FPGA timing logic from analog subsystems across –40°C to 125°C. Use Value: Guaranteed 3-state behavior prevents false triggering during power cycling; 2000V HBM withstands harsh ESD environments. |
Use Scenario: Driving isolated gate-driver enable signals in high-voltage IGBT inverters for servo drives. IC Role / Device Role / Timing Role: Robust 3-state buffer interfacing microcontroller PWM outputs to opto-isolated driver stages. Use Value: ±24mA drive ensures fast enable/disable transitions; Ioff protects MCU I/O during inverter fault shutdown sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G126DBVT | Inverting logic function (A → Y̅); otherwise identical electrical specs and DPW packaging. | Required where signal polarity inversion is needed in bus arbitration or enable logic chains. | Select SN74LVC1G126DBVT only when inverting behavior aligns with system-level logic architecture. |
| 74LVC1G125GW,125 | NXP variant in SC-70-5 (DCK) package; same logic and specs but larger 2.0mm × 2.1mm footprint and higher RθJA (371°C/W). | Suitable for legacy designs using SC-70 footprints or where thermal margin exceeds 125°C junction limit. | Choose 74LVC1G125GW,125 if board layout already accommodates SC-70 or thermal derating is acceptable. |
Compared with SN74LVC1G125DBVT, SN74LVC1G126DBVT provides functional inversion without trade-offs in speed or drive strength, while 74LVC1G125GW,125 offers identical logic in a less space-efficient package with reduced thermal performance-making SN74LVC1G125DBVT optimal for miniaturized, thermally constrained applications.
Availability
SN74LVC1G125DBVT is available at Aetrix Electronics and suitable for high-speed data acquisition, SSD internal routing, and video IP transcoder interface applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for SN74LVC1G125DBVT 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 logic solutions for industrial, automotive, and communications markets.
The SN74LVC1G125 belongs to TI's LVC logic family, designed specifically for low-voltage, high-speed, mixed-supply digital interfacing with emphasis on space efficiency, power optimization, and robustness in demanding environments.
FAQ
What is the recommended pullup resistor value for OE on SN74LVC1G125DBVT?
The OE pin should be tied to VCC through a pullup resistor to ensure high-impedance output during power-up. TI specifies the minimum resistor value based on the driver's current-sinking capability. For SN74LVC1G125DBVT, a 10kΩ resistor is recommended - it guarantees reliable disable state while minimizing quiescent current and accommodating typical Ioff leakage (<10μA) and PCB parasitics.
Does SN74LVC1G125DBVT support 5V-tolerant inputs when VCC = 3.3V?
Yes. SN74LVC1G125DBVT features over-voltage tolerant inputs: both A and OE accept voltages up to 5.5V regardless of VCC level. When VCC = 3.3V, the device correctly interprets 5V TTL logic levels (VIH ≥ 2.0V, VIL ≤ 0.8V) and safely clamps excess voltage internally - no external resistors or translators are required.
Can SN74LVC1G125DBVT drive a 50pF load while meeting datasheet timing specs?
Yes. SN74LVC1G125DBVT is characterized for CL = 30pF and 50pF loads across –40°C to 125°C. At VCC = 3.3V and CL = 50pF, maximum tpd is 4.7ns and tdis is 5.2ns - fully compliant with datasheet limits. For best signal integrity, keep trace lengths short and avoid stubs; add a 10–33Ω series resistor if ringing occurs.
Is SN74LVC1G125DBVT suitable for hot-swap applications?
Yes. SN74LVC1G125DBVT includes Ioff circuitry that disables all outputs when VCC = 0V, limiting Ioff current to ±10μA max. This prevents back-driving of powered circuitry and protects upstream logic during live insertion - a key requirement for modular SSD carriers, field-replaceable video cards, and industrial I/O modules.
What is the thermal resistance (RθJA) of SN74LVC1G125DBVT in its DPW package?
SN74LVC1G125DBVT in the DPW (X2SON-5) package has an RθJA of 340°C/W, measured per JEDEC JESD51 standards on a 1s1p test board. This value assumes standard copper pour and 2oz internal layers. For continuous operation at 125°C ambient, power dissipation must remain below ~150mW - well within the device's 10μA ICC max and typical Cpd = 19pF at 3.3V.
SN74LVC1G125DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
SN74LVC1G125DBVT FAQ
1.How can I place an order for SN74LVC1G125DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G125DBVT 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 SN74LVC1G125DBVT reliable?
The price and inventory of SN74LVC1G125DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G125DBVT is usually 5 days.
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SN74LVC1G125DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G125DBVT 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 SN74LVC1G125DBVT?
For technical support, including SN74LVC1G125DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G125DBVT requirements.
6.How does Aetrix verify that SN74LVC1G125DBVT is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G125DBVT 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 SN74LVC1G125DBVT meets industry standards.
7.What is the process for return or replacement of SN74LVC1G125DBVT?
All SN74LVC1G125DBVT units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G125DBVT, 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 SN74LVC1G125DBVT part is unused and in its original packaging.
Return procedure for SN74LVC1G125DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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