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Toshiba Semiconductor and Storage TC7SPN3125TU,LF
- Part No.:
- TC7SPN3125TU,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
TC7SPN3125TU,LF.pdf
- Description:
- IC TRANSLTR UNIDIRECTIONAL UF6
- Quantity:
- Payment:
- Shipping:
Inventory:4,558
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Product details
Overview
TC7SPN3125TU,LF from Toshiba Electronic Devices & Storage Corporation is a 1-bit dual-supply CMOS bus buffer designed for voltage-level translation between mismatched I/O domains. It supports bidirectional level shifting across VCCA = 1.1–2.7 V (e.g., 1.2 V/1.5 V/1.8 V/2.5 V logic) and VCCB = 1.65–3.6 V (e.g., 1.8 V/2.5 V/3.3 V buses), delivers propagation delay as low as 13.7 ns (VCCA = 2.5 V, VCCB = 3.3 V), features ±3 mA output drive at VCCB = 3.0 V, and operates across –40 °C to +85 °C in battery-powered portable systems.
For engineers reviewing the TC7SPN3125TU,LF datasheet, TC7SPN3125TU,LF pinout, TC7SPN3125TU,LF application, or TC7SPN3125TU,LF equivalent, key selection criteria include dual-rail supply flexibility, 3.6 V-tolerant I/Os, ultra-low quiescent current during OE = "H", high-impedance 3-state control, and UF6 package compatibility with space-constrained PCB layouts.
Technical Context
The TC7SPN3125TU,LF implements a silicon-gate CMOS architecture with independent A-side (low-voltage domain) and B-side (higher-voltage domain) power supplies. Its input structure provides overvoltage tolerance up to 3.6 V on both A1 and OE pins regardless of VCCA state, enabling safe operation during power sequencing mismatches.
Signal flow is unidirectional (A1 → B1) with active-high enable (OE); when OE = L, B1 follows A1; when OE = H, B1 enters high-impedance state. The device supports floating A-bus operation during disable mode and includes integrated ESD protection on all pins per JESD22-A114.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.1 V to 2.7 V - Enables interface with 1.2 V, 1.5 V, 1.8 V, and 2.5 V logic families without level-shifting circuitry. |
| VCCB Range | 1.65 V to 3.6 V - Supports connection to 1.8 V, 2.5 V, and 3.3 V buses while maintaining 3.6 V I/O tolerance. |
| tPLH/tPHL (max) | 13.7 ns at VCCA = 2.5 V / VCCB = 3.3 V - Ensures timing compliance in high-speed mixed-voltage data paths such as memory interfaces. |
| IOLB/IOHB (min) | ±3 mA at VCCB = 3.0 V - Drives standard CMOS loads without external buffering in portable system interconnects. |
| IOZB (max) | ±2.0 µA - Minimizes leakage current in 3-state mode, critical for low-power sleep states in handheld devices. |
| Operating Temp | –40 °C to +85 °C - Qualified for industrial and consumer portable equipment environments. |
| Package | UF6 (1.6 × 1.6 × 0.55 mm, 0.5 mm pitch) - Ultra-compact footprint suitable for space-limited mobile PCBs. |
Pinout & Package
TC7SPN3125TU,LF is housed in the UF6 ultra-thin leadless package (1.6 mm × 1.6 mm × 0.55 mm, 0.5 mm pitch), weighing 7.0 mg (typ.), with wettable flank terminals for automated optical inspection (AOI) and reliable solder joint formation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | Low-voltage domain input | Accepts logic signals referenced to VCCA; tolerant to up to 3.6 V regardless of VCCA state. |
| 2 (GND) | Ground reference | Common return path for both supply domains; must be low-impedance for noise immunity. |
| 3 (VCCA) | Low-voltage supply rail | Powers internal A-side logic; range 1.1–2.7 V; must be stable before enabling OE. |
| 4 (OE) | Output enable control | Active-low; drives B1 into high-impedance when high; tolerant to 3.6 V even if VCCA is off. |
| 5 (VCCB) | High-voltage supply rail | Powers B-side output driver; range 1.65–3.6 V; must not be powered before VCCA per Note 1. |
| 6 (B1) | High-voltage domain output | Drives logic referenced to VCCB; 3.6 V tolerant; sinks/sources up to ±3 mA at VCCB = 3.0 V. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply level translation | Supports 1.2 V ↔ 1.8 V, 1.2 V ↔ 2.5 V, 1.2 V ↔ 3.3 V, 1.5 V ↔ 2.5 V, 1.5 V ↔ 3.3 V, 1.8 V ↔ 2.5 V, 1.8 V ↔ 3.3 V, and 2.5 V ↔ 3.3 V combinations without external components. |
| Power-down protection | Input/output pins remain 3.6 V tolerant and non-damaging even when either VCCA or VCCB is unpowered or ramping. |
| Ultra-low static power | Quiescent ICC drops significantly when OE = "H", reducing system standby current in battery-operated PDAs and smartphones. |
| Floating A-bus support | A1 may be left unconnected (floating) during OE = "H" without risk of latch-up or excessive current draw. |
| High-speed 3-state control | Output disable time tPHZ ≤ 7.2 ns (VCCA = 2.5 V/VCCB = 3.3 V), enabling rapid bus arbitration in multi-master systems. |
Applications
| Mobile Baseband Interface | Low-Power Sensor Hub |
|---|---|
Use Scenario: Interfacing a 1.2 V application processor GPIO to a 3.3 V PMIC register bus in a smartphone. IC Role / Device Role / Timing Role: Unidirectional level translator enabling register access without voltage conflict or signal degradation. Use Value: Eliminates need for discrete resistor-divider or active translator ICs, saving board area and BOM cost while meeting 13.7 ns timing budget. |
Use Scenario: Connecting a 1.8 V microcontroller I²C port to multiple 3.3 V environmental sensors in a wearable health monitor. IC Role / Device Role / Timing Role: Voltage-domain isolator with 3-state control allowing dynamic bus sharing among sensors. Use Value: Enables shared I²C bus operation with guaranteed 3.6 V I/O tolerance and <2 µA leakage in disabled state for extended battery life. |
| Industrial PLC I/O Module | USB-C Power Delivery Controller Interface |
Use Scenario: Bridging a 2.5 V FPGA configuration interface to legacy 3.3 V digital I/O expansion cards. IC Role / Device Role / Timing Role: Dual-rail buffer ensuring clean signal integrity during hot-swap and partial power-up sequences. Use Value: Prevents bus contention during power sequencing mismatches via 3.6 V-tolerant inputs and controlled 3-state enable timing. |
Use Scenario: Level-shifting communication lines between a 1.5 V USB-C controller and a 3.3 V system management unit (SMU). IC Role / Device Role / Timing Role: Low-latency, low-leakage translator supporting USB PD specification timing margins. Use Value: Meets USB PD 3.0 sub-20 ns propagation delay requirement while consuming <2 µA in idle state to minimize SMU power overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0101DCKR | Single-channel, auto-direction sensing, push-pull output; no OE pin; VCCA = 1.2–3.6 V, VCCB = 1.65–5.5 V. | Eliminates explicit OE control but lacks deterministic 3-state behavior; unsuitable where bus isolation timing is critical. | Select TXS0101DCKR only when direction detection suffices and precise 3-state timing is unnecessary. |
| SN74AVC1T45DBVR | Single-bit, dual-supply, direction-controlled (DIR pin), push-pull output; VCCA/VCCB = 1.2–3.6 V; tpd = 3.2 ns (typ.) at 2.5 V/3.3 V. | Requires separate DIR signal; faster propagation but higher static current; no floating-A-bus support. | Choose SN74AVC1T45DBVR for speed-critical designs where DIR control is available and floating-A-bus is not required. |
Compared with TXS0101DCKR and SN74AVC1T45DBVR, the TC7SPN3125TU,LF offers deterministic 3-state control via dedicated OE, guaranteed floating-A-bus capability, and lower quiescent current in disable mode-making it optimal for power-sensitive, timing-deterministic mixed-voltage interfaces where explicit bus isolation is required.
Availability
TC7SPN3125TU,LF is available at Aetrix Electronics and suitable for mobile baseband interfaces, low-power sensor hubs, industrial PLC I/O modules, USB-C power delivery controller interfaces, and battery-driven portable electronics requiring stable component supply across automotive-grade temperature ranges and long-term production continuity.
Supply support for TC7SPN3125TU,LF 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 high-reliability semiconductor solutions for consumer, industrial, and automotive markets, with expertise in low-power logic, power management, and memory technologies.
The TC7SPN3125TU,LF belongs to Toshiba's TC7SPN series of ultra-small dual-supply bus buffers, engineered specifically for voltage translation in space-constrained, battery-powered portable electronics where power efficiency and supply sequencing robustness are critical.
FAQ
What is the maximum allowable voltage on the A1 and OE pins of the TC7SPN3125TU,LF when VCCA is unpowered?
The TC7SPN3125TU,LF specifies 3.6 V tolerance on all inputs-including A1 and OE-regardless of VCCA state. This allows safe signal application during power sequencing mismatches or partial power-down, preventing damage or unintended current paths. This feature is explicitly confirmed in the Absolute Maximum Ratings table and reinforced in the Functional Description section of the official datasheet.
Can the TC7SPN3125TU,LF operate with VCCA = 1.2 V and VCCB = 1.8 V, and what is its typical propagation delay under those conditions?
Yes, the TC7SPN3125TU,LF supports VCCA = 1.2 ± 0.1 V and VCCB = 1.8 ± 0.15 V per Section 11.2.8. Under those conditions, the maximum propagation delay (tPLH/tPHL) is 43 ns, with minimum values specified at 1.0 ns. This enables use in ultra-low-voltage subsystems such as energy-harvesting sensor nodes while maintaining functional timing margins.
Does the TC7SPN3125TU,LF require external pull-up or pull-down resistors on the A1 or B1 pins?
No external biasing is required: the TC7SPN3125TU,LF includes internal ESD protection diodes and does not mandate external termination. However, unused inputs (e.g., OE) must be tied to VCCA or GND per Section 10's operating range note to ensure predictable logic states and avoid floating-node noise coupling. A1 may float only when OE = "H", as explicitly permitted in Feature (6).
What is the thermal performance of the TC7SPN3125TU,LF in the UF6 package, and how does it affect continuous operation?
The TC7SPN3125TU,LF in UF6 has no published θJA value, but its maximum power dissipation is rated at 200 mW (Section 9). With typical ICCA/ICCB < 10 µA in quiescent state and < 100 µA during switching, self-heating is negligible under normal operation. The –40 °C to +85 °C operating range and 150 °C storage limit confirm suitability for sealed portable enclosures without forced airflow.
How does the TC7SPN3125TU,LF handle power sequencing between VCCA and VCCB, and what is the key restriction?
The TC7SPN3125TU,LF requires VCCA to be powered before VCCB, as stated in Absolute Maximum Ratings Note 1: "Don't supply a voltage to VCCB pin when VCCA is in the OFF state." Violating this risks latch-up or undefined output behavior. The 3.6 V I/O tolerance mitigates reverse-current issues during ramp-up, but correct sequencing remains mandatory for reliable operation.
TC7SPN3125TU,LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TC7SPN
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 1
- Voltage - VCCA:
- 1.1 V ~ 2.7 V
- Voltage - VCCB:
- 1.65 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Tri-State, Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SMD, Flat Leads
TC7SPN3125TU,LF FAQ
1.How can I place an order for TC7SPN3125TU,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TC7SPN3125TU,LF 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 TC7SPN3125TU,LF reliable?
The price and inventory of TC7SPN3125TU,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC7SPN3125TU,LF is usually 5 days.
3.What payment methods are accepted for TC7SPN3125TU,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC7SPN3125TU,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC7SPN3125TU,LF?
TC7SPN3125TU,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC7SPN3125TU,LF 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 TC7SPN3125TU,LF?
For technical support, including TC7SPN3125TU,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC7SPN3125TU,LF requirements.
6.How does Aetrix verify that TC7SPN3125TU,LF is sourced from the original manufacturer or authorized distributors?
All TC7SPN3125TU,LF 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 TC7SPN3125TU,LF meets industry standards.
7.What is the process for return or replacement of TC7SPN3125TU,LF?
All TC7SPN3125TU,LF units undergo pre-shipment inspection (PSI). If there is an issue with TC7SPN3125TU,LF, 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 TC7SPN3125TU,LF part is unused and in its original packaging.
Return procedure for TC7SPN3125TU,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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