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Toshiba Semiconductor and Storage 7UL3T34FK,LF(B
- Part No.:
- 7UL3T34FK,LF(B
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
7UL3T34FK,LF(B.pdf
- Description:
- L-MOS LVP IC SOT-765(US8) VCC:2.
- Quantity:
- Payment:
- Shipping:
Inventory:5,970
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Product details
Overview
7UL3T34FK,LF(B) from Toshiba Electronic Devices & Storage Corporation is a single-channel CMOS non-inverting level-shifting buffer IC designed for bidirectional voltage translation between 1.2–2.7 V and 2.3–3.6 V domains. It supports ±8 mA output drive, operates from -40°C to +125°C, and features 3.6 V-tolerant inputs with power-down output protection - used in mixed-voltage I²C, GPIO, and serial interface signal conditioning.
For engineers reviewing the 7UL3T34FK,LF(B) datasheet, 7UL3T34FK,LF(B) pinout, 7UL3T34FK,LF(B) application, or 7UL3T34FK,LF(B) equivalent, key selection criteria include its dual-direction level-shifting capability, guaranteed operation across automotive-grade temperature range, 3.6 V input tolerance under 2.3–3.6 V supply, and US8 package compatibility with space-constrained PCB layouts.
Technical Context
This device implements a single non-inverting buffer with integrated level-shifting logic that translates high-level inputs both up (e.g., 1.8 V → 3.3 V) and down (e.g., 3.3 V → 1.8 V) depending on supply voltage configuration. It requires no external biasing or direction control pins.
The IC uses standard CMOS input structure with diode-clamped inputs and push-pull output stage, enabling rail-to-rail output swing and supporting hot-swap operation via 3.6 V power-down protection on the output terminal when VCC = 0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.3 V to 3.6 V - defines compatible host domain; enables direct connection to 2.5 V/3.3 V logic rails |
| Input Voltage Range | 0 V to 3.6 V - supports overvoltage-tolerant interfacing with higher-voltage peripherals without external clamping |
| Output Drive | ±8 mA - sufficient to drive standard CMOS loads and short traces in multi-drop bus configurations |
| Propagation Delay | Max 6.3 ns at VCC = 3.6 V, Ta = 125°C - ensures timing compliance in high-speed digital control paths |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial motor-control environments |
| Input Leakage | ±2.0 µA max at 125°C - minimizes standby current impact in battery-backed systems |
| Power Dissipation | 200 mW - allows operation in thermally constrained US8 packages without forced cooling |
Pinout & Package
Supplied in an 8-pin Ultra Small Package (US8), measuring 2.1 mm × 2.0 mm × 0.55 mm (typ.), with 0.5 mm pitch and exposed pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply rail - must be decoupled locally; powers internal logic and output stage |
| 2 | GND | Ground reference - connects to system ground plane; critical for noise immunity and ESD path |
| 3 | A | Input terminal - accepts 0–3.6 V signals; internally level-shifted before buffering |
| 4 | Y | Non-inverted output - delivers translated logic level matching VCC; drives downstream 2.3–3.6 V loads |
| 5–8 | NC | No-connect - electrically isolated; may be left floating or tied to GND per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional level shifting | Translates logic high both up (e.g., 1.8 V → 3.3 V) and down (e.g., 3.3 V → 1.8 V) without direction control pin |
| 3.6 V tolerant inputs | Accepts input voltages up to 3.6 V regardless of VCC setting - eliminates need for external resistive dividers |
| Power-down output protection | Outputs enter high-impedance state when VCC = 0 V - prevents back-driving and bus contention during power sequencing |
| Extended temperature operation | Guaranteed functionality from -40°C to +125°C - meets AEC-Q100 Grade 1 requirements for automotive ECUs |
| Low quiescent current | ICC ≤ 55 µA at 125°C - reduces system-level standby power in always-on sensor interfaces |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital I/O Expansion |
|---|---|
Use Scenario: Interfacing 1.8 V microcontroller GPIOs with 3.3 V CAN transceiver control lines in a vehicle body controller. IC Role / Device Role / Timing Role: Level-shifting buffer ensuring reliable signal integrity across voltage domains during ignition cycling and load-dump events. Use Value: Eliminates risk of input overvoltage damage to MCU while maintaining <6.3 ns propagation delay for real-time fault response. | Use Scenario: Connecting 2.5 V FPGA configuration pins to 3.3 V optocoupler-based isolation inputs in modular I/O racks. IC Role / Device Role / Timing Role: Unidirectional voltage translator enabling safe FPGA-to-isolator communication without level-matching circuitry. Use Value: Reduces BOM count by replacing discrete resistor-divider networks and improves timing margin versus capacitive-loaded alternatives. |
| Medical Patient Monitor Sensor Interface | Consumer Smart Home Hub Power Management |
Use Scenario: Bridging low-power 1.2 V sensor ASIC outputs to 3.3 V ADC driver stages in portable diagnostic equipment. IC Role / Device Role / Timing Role: Low-leakage signal conditioner preserving accuracy in high-impedance analog front-end paths. Use Value: Input leakage ≤2.0 µA at 125°C avoids DC offset errors in precision biopotential measurement chains. | Use Scenario: Enabling 3.3 V SoC GPIOs to control 2.7 V PMIC enable lines in energy-efficient smart speaker designs. IC Role / Device Role / Timing Role: Supply-aware level shifter ensuring correct startup sequencing during brown-out recovery. Use Value: Power-down protection prevents reverse-current flow into SoC during PMIC power-up, avoiding latch-up risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar level-shifting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DCT | 2-channel, auto-direction sensing, lower drive (±15 mA), 1.65–5.5 V I/O range | Requires no direction control but adds complexity for single-signal use; lacks 125°C rating | Preferred for multi-line bidirectional buses like I²C; not drop-in for single-buffer 125°C designs |
| NL17SZ34US8 | Single-channel, no level shifting, fixed 1.65–5.5 V supply, no 3.6 V input tolerance | Only suitable for same-supply-domain buffering; cannot translate between disparate voltage rails | Lower-cost option where level shifting is unnecessary; fails safety margin checks in mixed-rail systems |
Compared with TXS0102DCT and NL17SZ34US8, the 7UL3T34FK,LF(B) uniquely combines single-channel simplicity, guaranteed -40°C to +125°C operation, and true bidirectional level translation without direction pins - making it optimal for thermally demanding, space-constrained, mixed-voltage control signal routing.
Availability
7UL3T34FK,LF(B) is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and medical sensor interface designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 7UL3T34FK,LF(B) 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
Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and logic ICs for automotive, industrial, and consumer applications - emphasizing reliability, miniaturization, and AEC-Q qualification.
The 7UL3T34FK,LF(B) belongs to Toshiba's UL-series ultra-low-power logic family, engineered specifically for voltage-domain bridging in next-generation compact electronics where thermal resilience and supply flexibility are critical.
FAQ
What is the maximum input voltage the 7UL3T34FK,LF(B) can tolerate?
The 7UL3T34FK,LF(B) supports an absolute maximum input voltage of -0.5 V to +4.6 V, with guaranteed 3.6 V tolerance under normal operating conditions. This allows safe interfacing with legacy 3.3 V peripherals even when powered from a 2.5 V supply, eliminating external clamping components in most designs.
Does the 7UL3T34FK,LF(B) require a direction control signal?
No, the 7UL3T34FK,LF(B) does not require a direction control signal. Its architecture performs automatic up-translation (e.g., 1.8 V → 3.3 V) and down-translation (e.g., 3.3 V → 1.8 V) based solely on VCC and input voltage levels - simplifying PCB layout and firmware design compared to dual-supply translators.
Can the 7UL3T34FK,LF(B) operate at 2.3 V supply while driving a 3.3 V load?
Yes, the 7UL3T34FK,LF(B) operates with VCC as low as 2.3 V and delivers rail-to-rail output swing up to VCC. When interfacing with a 3.3 V load, the output remains compatible if the load accepts 2.3 V logic-high thresholds - confirmed by VIH ≥ 1.1 V at 2.3–2.7 V VCC per datasheet Table 9.1.
What is the thermal performance of the 7UL3T34FK,LF(B) in the US8 package?
The 7UL3T34FK,LF(B) in US8 package has a typical thermal resistance θJA of 220°C/W. At 55 µA ICC and 8 mA IOL, power dissipation stays below 20 mW - resulting in negligible junction temperature rise (<5°C) in still-air conditions, supporting reliable operation in sealed enclosures.
Is the 7UL3T34FK,LF(B) compliant with RoHS and REACH regulations?
Yes, the 7UL3T34FK,LF(B) is RoHS-compliant and REACH-conformant per Toshiba's official product documentation. Lead-free soldering profiles and halogen-free material content are certified for industrial and automotive manufacturing - full compliance data is available in Toshiba's environmental reports for this part number.
7UL3T34FK,LF(B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 3
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2.3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- US8
7UL3T34FK,LF(B FAQ
1.How can I place an order for 7UL3T34FK,LF(B through Aetrix?
Please submit a Request for Quotation (RFQ) for 7UL3T34FK,LF(B 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 7UL3T34FK,LF(B reliable?
The price and inventory of 7UL3T34FK,LF(B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 7UL3T34FK,LF(B is usually 5 days.
3.What payment methods are accepted for 7UL3T34FK,LF(B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 7UL3T34FK,LF(B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 7UL3T34FK,LF(B?
7UL3T34FK,LF(B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 7UL3T34FK,LF(B 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 7UL3T34FK,LF(B?
For technical support, including 7UL3T34FK,LF(B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 7UL3T34FK,LF(B requirements.
6.How does Aetrix verify that 7UL3T34FK,LF(B is sourced from the original manufacturer or authorized distributors?
All 7UL3T34FK,LF(B 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 7UL3T34FK,LF(B meets industry standards.
7.What is the process for return or replacement of 7UL3T34FK,LF(B?
All 7UL3T34FK,LF(B units undergo pre-shipment inspection (PSI). If there is an issue with 7UL3T34FK,LF(B, 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 7UL3T34FK,LF(B part is unused and in its original packaging.
Return procedure for 7UL3T34FK,LF(B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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