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Texas Instruments SN74LV1T34DCKRG4
- Part No.:
- SN74LV1T34DCKRG4
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74LV1T34DCKRG4.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SC70-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74LV1T34DCKRG4 from Texas Instruments is a single-channel CMOS logic level shifter buffer with 5-pin SC70 package, supporting bidirectional voltage translation across 1.65V–5.5V VCC, 5V-tolerant inputs, and output drive up to 8mA at 5V. It enables reliable 1.2V-to-1.8V, 1.8V-to-3.3V, and 3.3V-to-5V up-translation and 3.3V-to-1.8V, 5V-to-3.3V down-translation in portable and telecom interface circuits.
For engineers reviewing the SN74LV1T34DCKRG4 datasheet, SN74LV1T34DCKRG4 pinout, SN74LV1T34DCKRG4 application, or SN74LV1T34DCKRG4 equivalent, this page delivers verified electrical parameters, validated SC70 pin mapping, confirmed translation capability per VCC condition, thermal resistance (289.2°C/W), and real-world use cases in mixed-voltage I²C, UART, and GPIO interfacing where supply rail isolation and signal integrity are critical.
Technical Context
The SN74LV1T34DCKRG4 implements a non-inverting buffer with LVxT-enhanced input thresholds-VIH as low as 0.99V at 1.8V VCC and VIL as high as 0.8V at 3.3V VCC-enabling robust up-translation without external biasing. Its 5V-tolerant inputs accept signals beyond VCC, while output logic levels strictly track VCC, ensuring compatibility with downstream 1.8V/2.5V/3.3V/5V CMOS loads.
It features balanced CMOS push-pull outputs capable of sourcing/sinking 3mA (1.8V), 5mA (2.5V), 7mA (3.3V), or 8mA (5V), with propagation delay under 7ns at 3.3V/15pF and characterized operation up to 50MHz. The device lacks enable control or 3-state functionality-its output is always active when powered.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - supports direct integration into multi-rail systems without level-shifting ICs upstream. |
| Input Voltage Tolerance | Up to 5.5V - allows connection to higher-voltage buses (e.g., 5V I²C) while operating from 1.8V or 2.5V supply. |
| Output Drive | 8mA at 5V VCC - sufficient to drive standard CMOS loads and reduce signal reflections on short PCB traces. |
| Propagation Delay | 4.0ns (typ) at 3.3V/15pF - enables reliable 25MHz digital signaling in timing-critical GPIO bridging. |
| Operating Temperature | –40°C to +125°C - qualified for industrial and automotive under-hood applications requiring extended thermal margin. |
| ESD Rating (HBM) | ±2000V - meets JEDEC JS-001 for robust handling in automated assembly and field-replaceable modules. |
| Input Capacitance | 2pF (typ) at 3.3V - minimizes loading on high-impedance source drivers like microcontroller GPIOs. |
Pinout & Package
SN74LV1T34DCKRG4 uses the SC70-5 (DCK) package: 2.00mm × 2.1mm body size, 5-pin surface-mount, lead-free (NiPdAu), moisture sensitivity level 1, rated for reflow up to 260°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No Connect | Not internally bonded - must remain unconnected; no pull-up/down required. |
| 2 (A) | Input | Single logic input with reduced VIH/VIL thresholds enabling voltage translation; 5V tolerant. |
| 3 (GND) | Ground Reference | Primary return path for supply current and output switching; requires low-inductance PCB connection. |
| 4 (Y) | Output | Non-inverting CMOS output referenced to VCC; drives loads up to 8mA with rail-to-rail swing. |
| 5 (VCC) | Power Supply | Single supply input defining output logic levels and input threshold voltages; bypass with 0.1µF capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply level translation | Eliminates need for dual-rail translators or discrete resistor networks in space-constrained designs. |
| 5V-tolerant inputs | Enables direct connection to legacy 5V peripherals without external clamping diodes or resistors. |
| Wide VCC range (1.65V–5.5V) | Permits use across multiple voltage domains-from ultra-low-power 1.8V SoCs to 5V industrial controllers. |
| Characterized up to 50MHz | Supports high-speed serial interfaces (e.g., UART, SPI clock lines) without added timing uncertainty. |
| Latch-up immunity >250mA | Ensures reliability during transient overvoltage events or hot-plug scenarios in modular systems. |
Applications
| Industrial Sensor Interface | Portable Device Power Management |
|---|---|
Use Scenario: Interfacing a 1.8V microcontroller GPIO to a 3.3V temperature sensor's alert line in a battery-powered IoT node. IC Role / Device Role / Timing Role: Single-direction level shifter translating 1.8V logic-high (1.5V) to 3.3V-compatible output using 3.3V VCC. Use Value: Eliminates external passive components, reduces BOM count by one resistor pair, and maintains <7ns propagation delay for responsive fault reporting. |
Use Scenario: Bridging 5V USB-UART bridge IC signals to a 2.5V application processor's debug port in a handheld medical device. IC Role / Device Role / Timing Role: Down-translator with 5V-tolerant A input and 2.5V-referenced Y output, powered from 2.5V rail. Use Value: Prevents damage to 2.5V I/O pins while preserving signal fidelity at 3Mbps UART rates, with no additional power domain required. |
| Server Baseboard Management | Automotive Infotainment Debug Port |
Use Scenario: Connecting a 3.3V BMC (Baseboard Management Controller) to a 5V system CPLD's status register read line. IC Role / Device Role / Timing Role: Up-translator operating at 5V VCC, accepting 3.3V input and driving 5V CMOS load. Use Value: Enables clean 3.3V→5V translation without overshoot, meeting 5V VIH min (2.0V) with 3.3V input margin >1.3V. |
Use Scenario: Isolating 12V CAN transceiver logic-level signals from a 1.8V automotive MCU's diagnostic GPIO in an infotainment head unit. IC Role / Device Role / Timing Role: Level shifter between 1.8V MCU and 3.3V CAN controller, powered from 1.8V rail with 3.3V-tolerant input. Use Value: Supports 1.8V-to-3.3V up-translation with VIH(min)=0.99V, ensuring reliable detection of 3.3V logic-high even at –40°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar level-shifting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1T45DCKR | Direction-controlled dual-supply translator (A/B side); requires separate VCCA/VCCB rails and DIR pin management. | Used where bidirectional data flow (e.g., I²C) or independent rail control is needed; not suitable for fixed-direction buffering. | Select SN74LVC1T45DCKR only if direction flexibility and true bidirectional operation are required; SN74LV1T34DCKRG4 is simpler for unidirectional use. |
| TXS0102DCUR | Auto-direction-sensing 2-channel translator with integrated 10kΩ pull-ups; open-drain outputs; no push-pull drive. | Optimized for I²C bus extension; cannot source current or drive capacitive loads beyond 30pF reliably. | Choose TXS0102DCUR for I²C-specific applications; SN74LV1T34DCKRG4 provides stronger drive and deterministic timing for general-purpose GPIO translation. |
Compared with SN74LVC1T45DCKR and TXS0102DCUR, SN74LV1T34DCKRG4 offers the lowest component count and simplest layout for fixed-direction, single-channel translation-no direction control, no pull-ups, no dual supplies-while delivering higher output drive and tighter timing control.
Availability
SN74LV1T34DCKRG4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable device power management, server baseboard management, and automotive infotainment debug ports requiring stable component supply, long-term lifecycle support, and consistent SC70 packaging.
Supply support for SN74LV1T34DCKRG4 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 and embedded processing technologies, with over 90 years of innovation in precision analog, power management, and logic solutions.
SN74LV1T34DCKRG4 belongs to TI's LVxT family of single-gate logic devices engineered specifically for voltage-level translation in space- and power-constrained applications across industrial, telecom, and portable electronics.
FAQ
What is the maximum operating frequency of SN74LV1T34DCKRG4?
The SN74LV1T34DCKRG4 is characterized up to 50MHz at 3.3V VCC with 15pF load, achieving typical propagation delay of 4.0ns. At 1.8V VCC, it supports up to 15MHz with 13ns typical tpd. These values are measured under recommended operating conditions and reflect guaranteed performance across –40°C to +125°C.
Can SN74LV1T34DCKRG4 translate 5V signals down to 1.8V?
Yes, SN74LV1T34DCKRG4 supports down-translation from 5V to 1.8V when powered from 1.8V VCC. Its 5V-tolerant input accepts 5V logic-high signals, and its output swings rail-to-rail between 0V and 1.8V. VIH(min) at 1.8V VCC is 0.95V, providing 4.05V noise margin for 5V input detection.
Is SN74LV1T34DCKRG4 pin-compatible with other LV1T-series devices?
Yes, SN74LV1T34DCKRG4 shares identical SC70-5 (DCK) pinout with SN74LV1T00, SN74LV1T04, SN74LV1T17, and other LV1Txx devices in the same package. Pin 1 is NC, Pin 2 is input, Pin 3 is GND, Pin 4 is output, and Pin 5 is VCC-enabling footprint reuse across functionally distinct single-gate logic variants.
Does SN74LV1T34DCKRG4 require external pull-up or pull-down resistors?
No, SN74LV1T34DCKRG4 does not require external pull-up or pull-down resistors on its input or output. Unused input (Pin 2) must be tied to VCC or GND per TI recommendation, but the device has no internal weak pull-ups. Output (Pin 4) is actively driven and should not be left floating.
What is the thermal resistance (RθJA) of SN74LV1T34DCKRG4 in SC70 package?
The junction-to-ambient thermal resistance (RθJA) of SN74LV1T34DCKRG4 in the SC70-5 (DCK) package is 289.2°C/W, measured under standard JEDEC JESD51-2 conditions. This value assumes a 1-inch² copper pad on the PCB; actual thermal performance improves with enhanced copper area or thermal vias.
SN74LV1T34DCKRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- SC-70-5
SN74LV1T34DCKRG4 FAQ
1.How can I place an order for SN74LV1T34DCKRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV1T34DCKRG4 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 SN74LV1T34DCKRG4 reliable?
The price and inventory of SN74LV1T34DCKRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV1T34DCKRG4 is usually 5 days.
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SN74LV1T34DCKRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV1T34DCKRG4 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 SN74LV1T34DCKRG4?
For technical support, including SN74LV1T34DCKRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV1T34DCKRG4 requirements.
6.How does Aetrix verify that SN74LV1T34DCKRG4 is sourced from the original manufacturer or authorized distributors?
All SN74LV1T34DCKRG4 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 SN74LV1T34DCKRG4 meets industry standards.
7.What is the process for return or replacement of SN74LV1T34DCKRG4?
All SN74LV1T34DCKRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV1T34DCKRG4, 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 SN74LV1T34DCKRG4 part is unused and in its original packaging.
Return procedure for SN74LV1T34DCKRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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