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Texas Instruments 74LVC1G125DBVTG4
- Part No.:
- 74LVC1G125DBVTG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74LVC1G125DBVTG4.pdf
- Description:
- IC BUFF NON-INVERT 5.5V SOT23-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
74LVC1G125DBVTG4 from Texas Instruments is a single 3-state noninverting bus buffer gate in SOT-23-5 (DBV) package, supporting 1.65–5.5V VCC operation, 3.7ns max propagation delay at 3.3V, ±24mA output drive, and Ioff for live insertion. It serves as a level-translating isolation buffer in high-speed digital interconnects between mixed-voltage subsystems.
For engineers reviewing the 74LVC1G125DBVTG4 datasheet, 74LVC1G125DBVTG4 pinout, 74LVC1G125DBVTG4 application, or 74LVC1G125DBVTG4 equivalent, key selection criteria include 3-state control timing (ten/tdis ≤ 5.6ns), overvoltage-tolerant inputs (up to 5.5V), ultra-low ICC (≤10μA), thermal performance in DBV package (RθJA = 357.1°C/W), and compatibility with 15pF/30pF load conditions.
Technical Context
This device implements a CMOS-based single-channel noninverting buffer with active-low 3-state enable (OE). Its logic function is defined by OE = L → Y = A; OE = H → Y = high-impedance. The input structure supports overvoltage tolerance up to 5.5V independent of VCC, enabling robust level translation from 3.3V or 5V sources into lower-VCC domains.
It features balanced push-pull outputs capable of sourcing/sinking ±24mA at 3V, Ioff protection that disables all outputs at 0V VCC, and ESD ratings of 2kV HBM and 1kV CDM. The DBV package (2.9mm × 2.8mm) uses standard SOT-23 footprint with 1.27mm pitch, and requires OE pullup during power sequencing to ensure defined startup state.
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 |
| tpd (max) | 3.7ns at 3.3V, CL = 15pF - ensures sub-4ns signal propagation for high-speed bus buffering |
| Output Drive | ±24mA at 3V - sufficient to drive moderate capacitive loads without external termination |
| Ioff Leakage | ±10μA at 5.5V - guarantees safe partial-power-down operation and back-drive immunity |
| Input Voltage Range | –0.5V to 5.5V - allows 5V-tolerant inputs even when VCC = 1.65V, enabling down-translation |
| ICC (max) | 10μA - supports ultra-low static power in battery-backed or always-on interface circuits |
| ESD Rating | 2000V HBM - meets industrial handling requirements without additional protection circuitry |
Pinout & Package
SOT-23-5 (DBV) package: 2.9mm × 2.8mm body, 1.27mm lead pitch, gull-wing leads. RoHS-compliant, Pb-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low 3-state enable input | Drives output Y to high-impedance when high; must be pulled up to VCC during power-up for safe default state |
| 2 - A | Noninverting data input | Accepts voltages up to 5.5V regardless of VCC; compatible with TTL and CMOS logic families |
| 3 - GND | Ground reference | Return path for all internal currents; requires low-inductance connection to system ground plane |
| 4 - Y | 3-state noninverting output | Provides true buffered A signal when OE = L; high-Z when OE = H; supports bus sharing |
| 5 - VCC | Positive supply | Supplies core logic and output drivers; requires local 0.1μF bypass capacitor adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| Overvoltage-tolerant inputs | Supports 5.5V input signals with VCC as low as 1.65V - eliminates need for external level shifters in mixed-supply systems |
| Ioff partial-power-down | Outputs fully disabled and leakage-limited (<±10μA) when VCC = 0V - enables hot-plug and live-insertion capability |
| Ultra-small DBV package | 2.9mm × 2.8mm SOT-23 footprint - saves board space in compact interfaces like SSD controllers and portable video encoders |
| Low dynamic power | 19pF typical power dissipation capacitance at 3.3V - reduces switching current and EMI in high-frequency data paths |
| Controlled edge rates | Input transition rate spec (5–20 ns/V) prevents oscillation and excessive shoot-through current in CMOS inputs |
Applications
| SSD Controller Interface | Video Transcoder Data Path |
|---|---|
Use Scenario: Isolating NAND flash command/address lines from host controller during power state transitions. IC Role / Device Role / Timing Role: 3-state buffer enabling bidirectional bus arbitration and voltage domain separation between 1.2V controller and 3.3V flash I/O. Use Value: Prevents back-driving during sleep mode via Ioff; maintains signal integrity with <3.7ns tpd for 100MHz+ toggle rates. |
Use Scenario: Level-shifting pixel data lanes between 3.3V FPGA video processing core and 5V HDMI transmitter PHY. IC Role / Device Role / Timing Role: Noninverting bus buffer translating up from 3.3V logic while tolerating 5.5V input transients on shared control lines. Use Value: Eliminates external clamping diodes; 5.5V-tolerant A input ensures robustness against HDMI hot-plug glitches. |
| Military Radar Signal Conditioning | Cable Modem Termination System |
Use Scenario: Buffering time-critical trigger and sync signals between radiation-hardened FPGA and analog front-end in radar subsystems. IC Role / Device Role / Timing Role: Low-jitter, deterministic-delay buffer ensuring precise timing alignment across temperature range (–40°C to 125°C). Use Value: Guaranteed tpd ≤ 4.7ns at 3.3V over full military temp range; latch-up immunity >100mA per JESD78 Class II. |
Use Scenario: Isolating DOCSIS MAC layer signals from RF section in cable modem headends to prevent noise coupling. IC Role / Device Role / Timing Role: 3-state enable-controlled buffer decoupling digital baseband from noisy RF power stages during transmit/receive switching. Use Value: High-impedance state suppresses crosstalk; ±24mA drive sustains signal integrity across long PCB traces to RF ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DBVR | Same silicon, tape-and-reel packaging (3000 pcs/reel vs. 250 pcs for DBVTG4); identical electrical specs and DBV footprint | No functional difference; selected for high-volume automated assembly instead of sample/prototype use | Choose DBVR for production runs requiring full reel delivery and SMT placement efficiency |
| 74LVC1G125GW,518 | NXP variant in SC-70-5 (DCK) package (2.0mm × 2.1mm); same VCC range and tpd but higher RθJA (371°C/W) | Smaller footprint but reduced thermal margin; not drop-in due to different pad layout and pitch (0.65mm vs. 1.27mm) | Use only if board space is critical and thermal derating is acceptable; requires PCB redesign |
Compared with 74LVC1G125DBVTG4, the DBVR offers identical performance with optimized logistics for volume manufacturing, while the NXP 74LVC1G125GW,518 trades thermal robustness and compatibility for smaller size - making the TI DBVTG4 optimal for prototyping, thermal-sensitive designs, and legacy SOT-23 layouts.
Availability
74LVC1G125DBVTG4 is available at Aetrix Electronics and suitable for SSD controller interfaces, video transcoder data paths, military radar signal conditioning, and cable modem termination systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for 74LVC1G125DBVTG4 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 interface ICs and automotive-grade timing devices.
The SN74LVC1G125 product line delivers single-gate 3-state buffers optimized for voltage translation, bus isolation, and low-power digital interfacing in space-constrained industrial, communications, and defense applications.
FAQ
What is the maximum operating temperature range for the 74LVC1G125DBVTG4?
The 74LVC1G125DBVTG4 is rated for operation from –40°C to +125°C ambient temperature. This extended range is validated across all electrical parameters including propagation delay (tpd ≤ 4.7ns at 3.3V), output drive (±24mA), and leakage (Ioff ≤ ±10μA), making it suitable for under-hood automotive modules and military radar environments where thermal stability is critical.
Does the 74LVC1G125DBVTG4 support 5V-tolerant inputs when powered from 1.8V VCC?
Yes, the 74LVC1G125DBVTG4 supports input voltages up to 5.5V regardless of VCC level, including at 1.65V–1.95V operation. This overvoltage tolerance is implemented via dedicated input protection circuitry without positive clamp diodes, enabling reliable 5V-to-1.8V down-translation in mixed-voltage systems without external components - a confirmed feature per TI's SCES223U datasheet Section 7.3.5.
What is the recommended pullup resistor value for the OE pin on the 74LVC1G125DBVTG4?
Texas Instruments recommends tying OE to VCC through a pullup resistor to ensure high-impedance output during power-up or brownout. The minimum value is determined by the driver's current-sinking capability: for 74LVC1G125DBVTG4, OE can sink ≥24mA, so a 10kΩ resistor is standard and sufficient. This provides fast enable timing while limiting current to <0.5mA at 5V - verified in Section 7.1 and Application Note "Implications of Slow or Floating CMOS Inputs".
Can the 74LVC1G125DBVTG4 drive a 50pF capacitive load while meeting timing specs?
Yes, the 74LVC1G125DBVTG4 is characterized for CL = 30pF and 50pF loads across –40°C to 125°C, with tpd ≤ 4.7ns and ten/tdis ≤ 5.6ns at 3.3V. TI explicitly states in Section 8.2.1.1 that it can drive ≤50pF loads while meeting all datasheet specifications. For larger loads, a series damping resistor is advised to suppress ringing - confirmed in Figure 6-2 and Application Section 8.2.2.
Is the 74LVC1G125DBVTG4 pin-compatible with other SOT-23-5 logic gates?
The 74LVC1G125DBVTG4 uses the standard SOT-23-5 (DBV) pinout: Pin 1 = OE, Pin 2 = A, Pin 3 = GND, Pin 4 = Y, Pin 5 = VCC. This matches TI's SN74LVC1Gxx family and industry-standard SOT-23-5 logic buffers (e.g., SN74LVC1G00, SN74LVC1G08), enabling direct PCB footprint reuse - verified in Section 4 "Pin Configuration and Functions" of the SCES223U datasheet.
74LVC1G125DBVTG4 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
74LVC1G125DBVTG4 FAQ
1.How can I place an order for 74LVC1G125DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G125DBVTG4 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 74LVC1G125DBVTG4 reliable?
The price and inventory of 74LVC1G125DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G125DBVTG4 is usually 5 days.
3.What payment methods are accepted for 74LVC1G125DBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G125DBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G125DBVTG4?
74LVC1G125DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G125DBVTG4 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 74LVC1G125DBVTG4?
For technical support, including 74LVC1G125DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G125DBVTG4 requirements.
6.How does Aetrix verify that 74LVC1G125DBVTG4 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G125DBVTG4 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 74LVC1G125DBVTG4 meets industry standards.
7.What is the process for return or replacement of 74LVC1G125DBVTG4?
All 74LVC1G125DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G125DBVTG4, 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 74LVC1G125DBVTG4 part is unused and in its original packaging.
Return procedure for 74LVC1G125DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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