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Texas Instruments 74LVC1G125DBVRG4
- Part No.:
- 74LVC1G125DBVRG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74LVC1G125DBVRG4.pdf
- Description:
- IC BUFF NON-INVERT 5.5V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:427
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Product details
Overview
74LVC1G125DBVRG4 from Texas Instruments is a single 3-state bus buffer gate used for signal isolation and controlled data routing on low-voltage digital buses. It features true non-inverting 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 in partial-power-down systems - deployed in high-speed data acquisition and video infrastructure interfaces.
For engineers reviewing the 74LVC1G125DBVRG4 datasheet, 74LVC1G125DBVRG4 pinout, 74LVC1G125DBVRG4 application, or 74LVC1G125DBVRG4 equivalent, key selection criteria include its ultra-small SOT-23-5 (DBV) package, over-voltage tolerant inputs (up to 5.5V), balanced CMOS 3-state output behavior, and guaranteed operation across –40°C to 125°C industrial temperature range.
Technical Context
The 74LVC1G125DBVRG4 implements a single non-inverting buffer with active-low 3-state enable (OE). When OE is low, A passes directly to Y; when OE is high, Y enters high-impedance state. Its input structure supports TTL-level compatibility and over-voltage tolerance up to 5.5V independent of VCC.
It uses standard CMOS input stages with <4pF input capacitance and balanced push-pull outputs capable of sourcing/sinking ±24mA at 3.3V. Ioff circuitry ensures zero current flow at outputs during VCC = 0V, enabling hot-plug capability without back-drive risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables interoperability between 1.8V, 2.5V, 3.3V, and 5V logic domains |
| tpd (max) | 3.7ns at 3.3V, CL = 15pF - supports >100MHz bus timing margins in compact layouts |
| Output Drive | ±24mA at 3.3V - sufficient to drive multiple LVC loads or moderate capacitive traces without external buffering |
| Ioff Leakage | ±10μA max at 5.5V - prevents unintended current paths during power sequencing or board hot-swap |
| Input Voltage Range | –0.5V to 5.5V - allows safe interfacing with 5V signals even when VCC = 1.8V or 2.5V |
| Operating Temp | –40°C to +125°C - qualified for automotive under-hood, industrial motor control, and telecom infrastructure use |
| ICC (max) | 10μA - enables ultra-low static power in battery-backed or always-on monitoring circuits |
Pinout & Package
SOT-23-5 (DBV) package: 2.9mm × 2.8mm body, 0.95mm height, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low output enable | Drives Y into high-Z when high; must be pulled up to VCC during power-up to prevent bus contention |
| 2 - A | Data input | Non-inverting input accepting 0–5.5V; compatible with TTL and LVTTL logic thresholds |
| 3 - GND | Ground reference | Primary return path for all I/O and supply currents; requires low-inductance connection to system ground plane |
| 4 - Y | 3-state buffered output | True replica of A when OE = low; high-impedance when OE = high - enables shared-bus arbitration |
| 5 - VCC | Supply voltage | Power rail for logic and output stages; requires local 0.1μF ceramic bypass capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Over-voltage tolerant inputs | Accepts 0–5.5V regardless of VCC setting - eliminates level-shifters when interfacing legacy 5V peripherals |
| Ioff partial-power-down protection | Blocks current flow at all I/O pins when VCC = 0V - enables safe hot-plug in modular backplane systems |
| Ultra-small DBV package | 0.64mm² footprint (SOT-23-5) - saves PCB area in space-constrained SSD controllers and portable video encoders |
| Balanced CMOS 3-state outputs | Sinks and sources equal current (±24mA @ 3.3V) - ensures symmetrical rise/fall times and reduced EMI on bidirectional buses |
| Wide temperature operation | Specified from –40°C to +125°C - supports deployment in radar front-ends and motor drive gate driver boards |
Applications
| Video Broadcasting Infrastructure | Industrial Motor Control |
|---|---|
|
Use Scenario: Signal routing between FPGA-based video scalers and multi-format SDI transmitters in broadcast switchers. IC Role / Device Role / Timing Role: Isolates clock and parallel pixel data buses during reconfiguration; provides clean 3-state control for dynamic source selection. Use Value: Prevents bus contention during hot-swap of processing modules while maintaining sub-4ns timing integrity across 1080p60 RGB interfaces. |
Use Scenario: Level-shifting and bus isolation between 3.3V microcontroller GPIOs and high-side gate drivers in servo amplifier boards. IC Role / Device Role / Timing Role: Buffers PWM enable signals to isolated IGBT drivers; decouples MCU logic from noisy power-stage ground returns. Use Value: Enables reliable 5V-tolerant interface without external translators, reducing BOM count and layout complexity in Class D amplifier designs. |
| SSD Internal Interface | Military Radar Signal Acquisition |
|
Use Scenario: Interfacing NVMe controller status lines to thermal sensors and power management ICs inside M.2 SSD modules. IC Role / Device Role / Timing Role: Provides low-capacitance, low-leakage signal buffering for critical reset, alert, and interrupt lines shared across voltage domains. Use Value: Maintains <4pF input loading and <10μA ICC to preserve battery-backed SRAM retention time and minimize standby power in portable storage. |
Use Scenario: Conditioning ADC trigger and clock distribution signals in airborne radar front-end assemblies operating at –40°C to +85°C. IC Role / Device Role / Timing Role: Buffers precise timing pulses from FPGA to analog signal chain components; enables synchronized sampling across multiple RF channels. Use Value: Delivers guaranteed 3.7ns tpd stability across full temperature range - critical for sub-nanosecond phase alignment in pulse-Doppler processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DBVT | Same silicon, tape-and-reel packaging (2500 pcs/reel vs. 3000 pcs/reel); identical electrical specs and pinout | No functional difference - used interchangeably in production where reel size impacts pick-and-place efficiency | Select 74LVC1G125DBVRG4 for standard volume orders; DBVT preferred for high-throughput SMT lines requiring larger reels |
| 74AUP1G125GW,518 | Lower ICC (0.9μA typ), slower tpd (6.4ns @ 3.0V), smaller XSON-5 (1.2×1.0mm) package; operates down to 0.8V VCC | Better suited for ultra-low-power sensor nodes than high-speed data paths; not 5V-tolerant | Choose 74LVC1G125DBVRG4 when 5V input tolerance, <4ns speed, or industrial temp range is required; AUP variant only for sub-1μA battery-critical apps |
Compared with SN74LVC1G125DBVT, 74LVC1G125DBVRG4 offers identical performance but optimized reel quantity for mid-volume builds; versus 74AUP1G125GW, it trades ultra-low ICC for guaranteed 5V-tolerant operation and 3.7ns speed - making it the preferred choice for robust industrial and video infrastructure designs.
Availability
74LVC1G125DBVRG4 is available at Aetrix Electronics and suitable for high-speed data acquisition, video broadcasting infrastructure, and industrial motor control applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for 74LVC1G125DBVRG4 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, with decades of expertise in high-reliability industrial and automotive-grade components.
The SN74LVC1G125 series belongs to TI's LVC logic family, designed specifically for low-voltage, high-speed, mixed-voltage interface applications in space-constrained and thermally demanding environments.
FAQ
What is the maximum input voltage rating for 74LVC1G125DBVRG4?
The 74LVC1G125DBVRG4 supports an absolute maximum input voltage of –0.5V to 5.5V on all pins, including A and OE, regardless of VCC level. This over-voltage tolerance enables direct interfacing with 5V signals even when powered from 1.8V or 2.5V supplies - a key advantage over standard LVC devices without this feature.
Does 74LVC1G125DBVRG4 support hot-plug or partial-power-down operation?
Yes, the 74LVC1G125DBVRG4 includes Ioff circuitry that disables all I/Os when VCC = 0V, limiting leakage to ±10μA. This allows safe insertion into live backplanes or modular systems where power rails may be sequenced independently - a requirement verified per JESD78 Class II latch-up testing.
What is the recommended pull-up resistor value for the OE pin of 74LVC1G125DBVRG4?
A 10kΩ pull-up resistor from OE to VCC is recommended to ensure reliable high-impedance state during power-up. This value balances fast enable timing against static current draw and is validated across –40°C to 125°C operation, per TI application guidance in SCES223U Section 3 and 7.1.
Can 74LVC1G125DBVRG4 drive a 50pF load while meeting datasheet timing specs?
Yes - the 74LVC1G125DBVRG4 switching characteristics (Section 5.7–5.8) are specified with CL = 30pF and 50pF loads across –40°C to 125°C. At 3.3V VCC, tpd remains ≤4.7ns and tdis ≤5.2ns under 50pF, satisfying timing closure for most FPGA-to-peripheral interconnects.
Is 74LVC1G125DBVRG4 pin-compatible with other SOT-23-5 logic buffers?
Yes - the 74LVC1G125DBVRG4 uses the industry-standard SOT-23-5 pinout (OE-A-GND-Y-VCC), matching SN74LVC1G07, SN74LVC1G08, and other TI single-gate logic in DBV package. However, function differs: only 74LVC1G125DBVRG4 provides 3-state non-inverting buffer behavior with active-low OE.
74LVC1G125DBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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
74LVC1G125DBVRG4 FAQ
1.How can I place an order for 74LVC1G125DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G125DBVRG4 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 74LVC1G125DBVRG4 reliable?
The price and inventory of 74LVC1G125DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G125DBVRG4 is usually 5 days.
3.What payment methods are accepted for 74LVC1G125DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G125DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G125DBVRG4?
74LVC1G125DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G125DBVRG4 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 74LVC1G125DBVRG4?
For technical support, including 74LVC1G125DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G125DBVRG4 requirements.
6.How does Aetrix verify that 74LVC1G125DBVRG4 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G125DBVRG4 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 74LVC1G125DBVRG4 meets industry standards.
7.What is the process for return or replacement of 74LVC1G125DBVRG4?
All 74LVC1G125DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G125DBVRG4, 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 74LVC1G125DBVRG4 part is unused and in its original packaging.
Return procedure for 74LVC1G125DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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