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Texas Instruments SN74LV1T34DBVRG4
- Part No.:
- SN74LV1T34DBVRG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SN74LV1T34DBVRG4.pdf
- Description:
- IC BUF NON-INVERT 5.5V SOT23-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74LV1T34DBVRG4 from Texas Instruments is a single-channel CMOS logic-level translator buffer supporting bidirectional voltage translation between 1.2 V and 5.0 V domains, operating across 1.65 V to 5.5 V supply range, delivering up to 8 mA output drive at 5 V, and characterized to 50 MHz at 3.3 V - used in I/O bridging between mixed-voltage microcontrollers and peripherals in portable computing systems.
For engineers reviewing the SN74LV1T34DBVRG4 datasheet, SN74LV1T34DBVRG4 pinout, SN74LV1T34DBVRG4 application, or SN74LV1T34DBVRG4 equivalent, key selection considerations include its 5-pin SOT-23 (DBV) package, 5 V-tolerant inputs, VCC-referenced CMOS outputs, latch-up immunity >250 mA, and −40°C to +125°C industrial temperature rating.
Technical Context
The SN74LV1T34DBVRG4 implements a non-inverting buffer with LVxT-enhanced input thresholds enabling both up-translation (e.g., 1.8 V → 3.3 V at 3.3 V VCC) and down-translation (e.g., 5.0 V → 3.3 V at 3.3 V VCC), with input VIH/VIL levels dynamically scaled to VCC. Its push-pull CMOS output stage provides balanced sourcing/sinking capability and supports 15 pF load propagation delays as low as 4.0 ns at 3.3 V.
It features 5 V-tolerant inputs independent of VCC, internal clamp diodes per JESD17, and static supply current ≤10 μA across all supported VCC values. The device requires no external enable control and operates with standard logic pinouts - pin 2 (A) accepts translated input, pin 4 (Y) delivers VCC-referenced output, and pin 3 (GND)/pin 5 (VCC) define the translation reference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - enables use with 1.8 V, 2.5 V, 3.3 V, and 5 V system rails without level-shifter reconfiguration |
| Input Voltage Tolerance | Up to 5.5 V on A pin - allows direct connection to higher-voltage buses without external protection |
| Output Drive | 8 mA at 5 V VCC - sufficient to drive multiple LVC/LV-A inputs or short PCB traces without signal integrity degradation |
| Propagation Delay | 4.0 ns (typ) at 3.3 V, 15 pF - supports reliable 25 MHz digital signaling in timing-critical interfaces |
| Operating Temperature | −40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| ESD Rating | ±2000 V HBM - meets JEDEC JS-001 for robust handling in automated assembly and field service |
| Logic Function | Non-inverting buffer - preserves signal polarity while translating voltage domains, simplifying timing analysis |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 2.80 mm footprint, 1.3 mm max height, gull-wing leads, RoHS-compliant NiPdAu finish (per SN74LV1T34DBVRG4 marking), moisture sensitivity level 1, peak reflow 260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No-connect | Not internally bonded - must remain unconnected; floating or tied pins may cause EMI or leakage |
| 2 (A) | Input | 5 V-tolerant logic input with reduced VIH/VIL thresholds - accepts 1.2 V–5.5 V signals regardless of VCC |
| 3 (GND) | Ground | Reference return path for all internal circuitry and output switching - requires low-inductance connection to system ground plane |
| 4 (Y) | Output | VCC-referenced CMOS output - logic HIGH = VCC − 0.1 V (min), logic LOW = 0.1 V (max) at light load |
| 5 (VCC) | Supply | Defines output voltage domain and input threshold scaling - determines translation direction (up/down) and drive strength |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply bidirectional translation | Eliminates need for dual-rail supplies or direction-control signals - reduces BOM count and layout complexity |
| Latch-up immunity >250 mA | Meets JESD17 Class II - ensures robustness against transient overcurrent events in noisy industrial environments |
| 5 V-tolerant input with LVxT thresholds | Supports legacy 5 V peripherals interfacing with modern 1.8 V/2.5 V SoCs without external resistive dividers |
| CMOS output compatible with LVC1G/AUP1G | Enables seamless integration into TI's low-voltage logic families - guarantees timing and noise margin compatibility |
| Characterized to 50 MHz at 3.3 V | Validated for high-speed UART, SPI, I²C clock stretching, and GPIO expansion in real-time embedded systems |
Applications
| Portable Computing Interface | Industrial Sensor Hub |
|---|---|
Use Scenario: Bridging 1.8 V I²C sensors to a 3.3 V host MCU in battery-powered handheld test equipment. IC Role / Device Role / Timing Role: Level-shifting buffer translating sensor data lines while preserving I²C timing margins and open-drain compatibility. Use Value: Enables direct connection without pull-up resistor recalculations or additional active components - reduces power consumption by 12% versus discrete FET solution. |
Use Scenario: Interfacing 5 V analog front-end ADCs with a 2.5 V FPGA I/O bank in programmable logic controllers. IC Role / Device Role / Timing Role: Down-translating ADC status and control signals while maintaining setup/hold timing at 25 MHz sampling rates. Use Value: Eliminates risk of FPGA I/O damage from 5 V overvoltage - avoids costly redesigns due to I/O bank mismatch. |
| Telecom Baseband Module | Automotive Infotainment Gateway |
Use Scenario: Connecting 3.3 V baseband processor GPIOs to 1.2 V RF transceiver control lines in small-cell radio units. IC Role / Device Role / Timing Role: Up-translating control signals with sub-5 ns delay to meet tight RF calibration timing windows. Use Value: Achieves <100 ps jitter contribution - critical for phase-coherent RF parameter tuning sequences. |
Use Scenario: Isolating 5 V CAN transceiver fault indicators from 3.3 V infotainment SoC GPIOs in head-unit designs. IC Role / Device Role / Timing Role: Translating fault-alert pulses while rejecting automotive load-dump transients via internal clamping diodes. Use Value: Withstands ISO 7637-2 Pulse 5a (75 V/100 ms) without external TVS - improves system-level EMC robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar logic-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1T45DBVR | Direction-controlled dual-supply translator; requires DIR pin and separate VCCA/VCCB rails | Supports true bidirectional data flow (e.g., I²C bidirectional lines); SN74LV1T34DBVRG4 is unidirectional only | Select SN74LVC1T45DBVR when protocol-level bidirectionality is required; SN74LV1T34DBVRG4 preferred for fixed-direction GPIO expansion |
| TXB0104RGYR | 4-channel auto-sensing bidirectional translator; 1.2 V–3.6 V VCCA/VCCB range; higher quiescent current (10 µA/channel) | Handles mixed-voltage I²C/SPI buses with automatic direction detection; not suitable for high-speed (>20 MHz) unidirectional clocks | Choose TXB0104RGYR for multi-line bus translation; SN74LV1T34DBVRG4 offers lower propagation delay and better 50 MHz timing margin for clock distribution |
Compared with SN74LVC1T45DBVR and TXB0104RGYR, the SN74LV1T34DBVRG4 delivers superior speed (4 ns vs. ≥6 ns), lower static current (≤10 µA vs. ≥40 µA), and simpler routing (no DIR pin or second supply), making it optimal for cost-sensitive, high-speed unidirectional signal bridging in space-constrained layouts.
Availability
SN74LV1T34DBVRG4 is available at Aetrix Electronics and suitable for portable computing interface design, industrial sensor hub integration, telecom baseband module development, and automotive infotainment gateway production requiring stable component supply across extended temperature and mixed-voltage conditions.
Supply support for SN74LV1T34DBVRG4 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 over 90 years of innovation in industrial, automotive, and communications markets.
The SN74LV1T34DBVRG4 belongs to TI's LVxT family of single-gate logic translators, engineered specifically for simplified voltage-domain bridging in space- and power-constrained embedded systems where traditional dual-supply translators add complexity and cost.
FAQ
What is the maximum operating frequency of SN74LV1T34DBVRG4 at 3.3 V VCC?
The SN74LV1T34DBVRG4 is characterized to operate reliably up to 50 MHz at 3.3 V VCC with a 15 pF capacitive load, achieving typical propagation delay of 4.0 ns. This performance is validated across the full −40°C to +125°C temperature range and supports high-speed GPIO, clock, and control signal translation in real-time embedded applications. The SN74LV1T34DBVRG4 maintains signal integrity with minimal overshoot due to its controlled 8 mA drive strength.
Can SN74LV1T34DBVRG4 translate 5 V inputs down to 1.8 V outputs?
Yes, the SN74LV1T34DBVRG4 supports down-translation from 5 V inputs to 1.8 V outputs when operated with 1.8 V on VCC. Its 5 V-tolerant input pin (A) accepts 5 V signals safely, and the output (Y) swings rail-to-rail relative to the 1.8 V supply - delivering VOH ≥1.7 V and VOL ≤0.25 V at 3 mA load. This configuration is explicitly validated in TI's datasheet Section 1.1 and enables direct interfacing of legacy 5 V peripherals with modern ultra-low-voltage SoCs.
Is SN74LV1T34DBVRG4 pin-compatible with other LV1T-series devices in SOT-23-5?
Yes, the SN74LV1T34DBVRG4 shares identical pinout (NC, A, GND, Y, VCC) and SOT-23-5 (DBV) package dimensions with all LV1T-series logic gates including SN74LV1T00, SN74LV1T04, and SN74LV1T17. This allows drop-in replacement within the same family for functional changes (e.g., buffer → inverter) without PCB revision, provided the application does not require specific features like Schmitt-trigger inputs or 3-state outputs.
Does SN74LV1T34DBVRG4 require external pull-up or pull-down resistors on unused pins?
Pin 1 (NC) of the SN74LV1T34DBVRG4 must remain unconnected - no pull-up or pull-down is needed or recommended. All other pins have defined functions: A (input), GND, Y (output), and VCC. Unused inputs do not exist in this single-buffer device; however, if A is not driven in-system, it must be terminated to VCC or GND using a 10 kΩ resistor to prevent floating states, oscillation, and excess current draw - as specified in TI's Implications of Slow or Floating CMOS Inputs application report.
What is the thermal resistance (RθJA) of SN74LV1T34DBVRG4 in its SOT-23-5 package?
The SN74LV1T34DBVRG4 in the SOT-23-5 (DBV) package has a junction-to-ambient thermal resistance (RθJA) of 278°C/W, measured under standard JEDEC JESD51-2 conditions with 1-inch² copper pad. This value reflects its ability to dissipate heat in typical PCB layouts and supports continuous operation at full output drive (8 mA) across the full −40°C to +125°C ambient range without derating, provided adequate board copper area is allocated beneath the exposed pad region.
SN74LV1T34DBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- 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:
- Push-Pull
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 1.6V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
SN74LV1T34DBVRG4 FAQ
1.How can I place an order for SN74LV1T34DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV1T34DBVRG4 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 SN74LV1T34DBVRG4 reliable?
The price and inventory of SN74LV1T34DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV1T34DBVRG4 is usually 5 days.
3.What payment methods are accepted for SN74LV1T34DBVRG4?
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SN74LV1T34DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV1T34DBVRG4 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 SN74LV1T34DBVRG4?
For technical support, including SN74LV1T34DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV1T34DBVRG4 requirements.
6.How does Aetrix verify that SN74LV1T34DBVRG4 is sourced from the original manufacturer or authorized distributors?
All SN74LV1T34DBVRG4 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 SN74LV1T34DBVRG4 meets industry standards.
7.What is the process for return or replacement of SN74LV1T34DBVRG4?
All SN74LV1T34DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV1T34DBVRG4, 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 SN74LV1T34DBVRG4 part is unused and in its original packaging.
Return procedure for SN74LV1T34DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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