My Inquiry
My Account
Texas Instruments SN74LV1T34DBVR
- Part No.:
- SN74LV1T34DBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SN74LV1T34DBVR.pdf
- Description:
- IC BUF NON-INVERT 5.5V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:13,489
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LV1T34DBVR from Texas Instruments is a single-channel CMOS buffer logic level shifter with 5-V-tolerant inputs, operating from 1.65 V to 5.5 V supply, supporting bidirectional voltage translation (e.g., 1.8 V ↔ 3.3 V, 3.3 V ↔ 5.0 V), delivering up to 8 mA output drive at 5 V, and characterized to 50 MHz at 3.3 V - used in inter-processor signal bridging between mixed-voltage subsystems.
For engineers reviewing the SN74LV1T34DBVR datasheet, SN74LV1T34DBVR pinout, SN74LV1T34DBVR application, or SN74LV1T34DBVR equivalent, key selection criteria include input threshold compatibility across 1.2–5.0 V logic families, VCC-referenced CMOS output compliance, 5-pin SOT-23 package constraints, and thermal performance under industrial temperature cycling (–40°C to 125°C).
Technical Context
The SN74LV1T34DBVR implements a non-inverting buffer with LVxT-enhanced input thresholds enabling both up-translation (e.g., 1.8 V input → 3.3 V output at VCC = 3.3 V) and down-translation (e.g., 5.0 V input → 3.3 V output at VCC = 3.3 V). Its input VIH/VIL thresholds scale with VCC, and outputs are strictly referenced to VCC, not input voltage.
It features balanced push-pull CMOS outputs capable of ±8 mA drive at 5 V, with propagation delay as low as 2.7 ns (typ.) at 5 V/15 pF, and includes internal clamp diodes on inputs and outputs for ESD robustness (±2000 V HBM). Unused inputs must be terminated to VCC or GND to prevent floating-induced oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - enables direct interface between 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without external biasing. |
| Input Voltage Tolerance | Up to 5.5 V on all inputs - supports down-translation from higher-voltage systems (e.g., 5 V MCU to 3.3 V FPGA) without level-shifting resistors. |
| Output Drive | 8 mA at 5 V VCC - sufficient to drive standard CMOS loads and reduce signal reflections on short PCB traces. |
| Propagation Delay | 2.7 ns (typ.) at 5 V/15 pF - ensures timing integrity in high-speed digital interfaces up to 50 MHz. |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood, industrial control, and telecom base station environments. |
| ESD Rating | ±2000 V HBM - meets JEDEC JS-001 for robust handling in automated assembly and field deployment. |
| Input Leakage | ±1 μA max - minimizes power impact in battery-powered portable applications with high-impedance signal paths. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 2.80 mm body, 5-pin surface-mount, lead-free (Sn), moisture sensitivity level 1 (260°C peak reflow), rated for –40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No-connect | Not internally bonded - must remain unconnected; no routing or pull-up/pull-down required. |
| 2 (A) | Input | 5-V-tolerant logic input with reduced VIH/VIL thresholds - accepts 1.2 V to 5.0 V signals depending on VCC setting. |
| 3 (GND) | Ground reference | Primary return path for supply current and signal reference - requires low-inductance connection to system ground plane. |
| 4 (Y) | Output | VCC-referenced CMOS output - swings rail-to-rail (0 V to VCC) with drive strength scaling with VCC (3–8 mA). |
| 5 (VCC) | Positive supply | Single power rail defining output logic levels and input thresholds - bypass with 0.1 µF ceramic capacitor placed <1 mm from pin. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply level translation | Eliminates need for dual-rail translators or discrete resistor networks - reduces BOM count and layout area in space-constrained designs. |
| VCC-referenced output | Ensures output logic levels match downstream device VCC requirements - avoids misinterpretation in mixed-supply SoC/FPGA interfaces. |
| 5-V-tolerant inputs | Enables direct connection to legacy 5 V peripherals (e.g., UART transceivers, sensors) without external clamping or attenuation. |
| Industrial temperature range | Supports uninterrupted operation in extended ambient conditions - critical for server backplanes, telecom line cards, and motor control modules. |
| Low static current | 10 µA max ICC - preserves battery life in always-on portable electronics such as IoT edge nodes and handheld test equipment. |
Applications
| Server Backplane Interfacing | Automotive ADAS Sensor Hub |
|---|---|
Use Scenario: Bridging 1.8 V MIPI I3C sensor outputs to 3.3 V microcontroller GPIOs in a compact automotive domain controller. IC Role / Device Role / Timing Role: Single-buffer level translator ensuring VIH/VIL compatibility between 1.8 V sensor logic and 3.3 V host MCU, with sub-5 ns propagation delay preserving timing margins. Use Value: Enables direct integration of low-power image/sensor ICs without adding external voltage dividers or active translators - reducing latency and component count. |
Use Scenario: Connecting 5 V analog front-end (AFE) outputs to 3.3 V ADC inputs in an autonomous driving radar processing module. IC Role / Device Role / Timing Role: Down-translating 5 V AFE digital status lines to 3.3 V logic levels while maintaining noise immunity and fast edge rates. Use Value: Prevents overvoltage damage to 3.3 V ADC control pins and eliminates need for series resistors or Zener clamps - improving signal fidelity and board reliability. |
| Industrial PLC I/O Module | Portable Medical Diagnostic Device |
Use Scenario: Isolating and translating 24 V digital input signals (via optocoupler output) to 2.5 V FPGA configuration logic in a programmable logic controller. IC Role / Device Role / Timing Role: Buffering and level-shifting optocoupler collector outputs (3.3 V swing) to 2.5 V FPGA I/O banks with precise VIH/VIL matching. Use Value: Guarantees clean logic transitions across voltage domains while meeting IEC 61000-4-2 ESD immunity requirements via integrated clamp diodes. |
Use Scenario: Interfacing 1.2 V ultra-low-power biosensor ASIC outputs to 1.8 V Bluetooth SoC in a wearable ECG monitor. IC Role / Device Role / Timing Role: Up-translating 1.2 V sensor data lines to 1.8 V SoC logic levels with minimal quiescent current (<10 µA) and low capacitive loading (2 pF). Use Value: Extends battery runtime by avoiding active translation ICs with higher ICC, while maintaining signal integrity for real-time physiological data capture. |
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 (A/B ports); requires separate VCCA/VCCB rails; higher ICC (20 µA typ.) | Used where bidirectional data flow (e.g., I²C, SMBus) is needed - not suitable for fixed-direction buffering like SN74LV1T34DBVR. | Select when direction control and true bidirectional translation are required; avoid if only unidirectional level shift is needed. |
| TXS0102DCUR | Auto-direction-sensing dual-channel translator; open-drain outputs; 1.65–3.6 V VCCA/VCCB range; no 5 V tolerance. | Targeted at low-voltage I²C bus extension; lacks 5 V input tolerance and rail-to-rail CMOS drive capability. | Prefer for I²C/SMBus expansion; unsuitable for 5 V peripheral interfacing or high-drive applications requiring 8 mA output. |
Compared with SN74LVC1T45DBVR and TXS0102DCUR, the SN74LV1T34DBVR offers simpler single-supply operation, 5 V input tolerance, and stronger output drive - making it optimal for fixed-direction, mixed-voltage GPIO bridging where simplicity and robustness outweigh bidirectionality needs.
Availability
SN74LV1T34DBVR is available at Aetrix Electronics and suitable for server backplanes, automotive ADAS sensor hubs, and industrial PLC I/O modules requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for SN74LV1T34DBVR 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 50 years of innovation in high-reliability industrial and automotive components.
The SN74LV1T34DBVR belongs to TI's LVxT family of single-gate logic level translators, designed specifically for space-constrained, mixed-voltage digital interfacing in portable, telecom, and industrial systems where supply simplicity and voltage flexibility are critical.
FAQ
What is the maximum input frequency supported by the SN74LV1T34DBVR?
The SN74LV1T34DBVR is characterized up to 50 MHz at 3.3 V VCC with 15 pF load. At 5 V VCC, propagation delay is 2.7 ns (typ.), supporting reliable operation in high-speed digital interfaces such as SPI clock lines and GPIO status signaling - but it is not intended for continuous high-frequency data buses like DDR or PCIe.
Can the SN74LV1T34DBVR translate 5 V inputs down to 1.8 V outputs?
Yes, the SN74LV1T34DBVR supports down-translation from 5 V inputs to 1.8 V outputs when operated at VCC = 1.8 V. Its 5-V-tolerant inputs accept 5 V signals safely, and its output swings rail-to-rail (0 V to 1.8 V), meeting VIH/VIL requirements of 1.8 V CMOS receivers per the Electrical Characteristics table.
Is pin 1 (NC) required to be tied to ground or left floating on the SN74LV1T34DBVR?
Pin 1 on the SN74LV1T34DBVR is a no-connect (NC) terminal with no internal bond wire - it must remain unconnected and should not be routed, grounded, or pulled up. Leaving it unconnected poses no functional or reliability risk, and TI explicitly states it is not internally connected.
Does the SN74LV1T34DBVR require external pull-up or pull-down resistors on its input or output?
No external pull-up or pull-down resistors are required for normal operation of the SN74LV1T34DBVR. Its CMOS input has high impedance and defined VIH/VIL thresholds; however, unused inputs must be terminated to VCC or GND - not left floating - to prevent oscillation and excessive ICC, per TI's design guidance in Section 9.2.
What is the thermal resistance (RθJA) of the SN74LV1T34DBVR in its SOT-23 package?
The SN74LV1T34DBVR in the DBV (SOT-23-5) package has a junction-to-ambient thermal resistance (RθJA) of 278°C/W, as specified in the latest revision (February 2024) of the datasheet. This value assumes standard JEDEC 2-layer board conditions and informs thermal design margin for continuous operation at full output drive across the –40°C to +125°C range.
SN74LV1T34DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- 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:
- 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
SN74LV1T34DBVR FAQ
1.How can I place an order for SN74LV1T34DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV1T34DBVR 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 SN74LV1T34DBVR reliable?
The price and inventory of SN74LV1T34DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV1T34DBVR is usually 5 days.
3.What payment methods are accepted for SN74LV1T34DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV1T34DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV1T34DBVR?
SN74LV1T34DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV1T34DBVR 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 SN74LV1T34DBVR?
For technical support, including SN74LV1T34DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV1T34DBVR requirements.
6.How does Aetrix verify that SN74LV1T34DBVR is sourced from the original manufacturer or authorized distributors?
All SN74LV1T34DBVR 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 SN74LV1T34DBVR meets industry standards.
7.What is the process for return or replacement of SN74LV1T34DBVR?
All SN74LV1T34DBVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV1T34DBVR, 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 SN74LV1T34DBVR part is unused and in its original packaging.
Return procedure for SN74LV1T34DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LV1T34DBVR Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
