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Toshiba Semiconductor and Storage TC7WPN3125FK,LF(CT
- Part No.:
- TC7WPN3125FK,LF(CT
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
TC7WPN3125FK,LF(CT.pdf
- Description:
- IC BUS SWITCH 2 X 1:1 US8
- Quantity:
- Payment:
- Shipping:
Inventory:4,148
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Product details
Overview
TC7WPN3125FK,LF(CT from Toshiba Electronic Devices & Storage Corporation is a dual-supply 2-bit CMOS bus buffer enabling voltage-level translation between low-voltage A-side buses (1.2 V–2.5 V) and higher-voltage B-side buses (1.8 V–3.6 V), with 3-state output control via OE, 13.7 ns max propagation delay at 2.5 V/3.3 V, and operation over –40°C to +125°C for automotive and industrial interface applications.
For engineers reviewing the TC7WPN3125FK,LF(CT datasheet, TC7WPN3125FK,LF(CT pinout, TC7WPN3125FK,LF(CT application, or TC7WPN3125FK,LF(CT equivalent, this page delivers verified electrical specs, US8 package layout, dual-rail DC/AC performance across 12 operating voltage combinations, truth table behavior, and real-world interface use cases in mixed-supply SoC subsystems.
Technical Context
This device implements a dual-rail CMOS buffer architecture with independent A-side (VCCA) and B-side (VCCB) supplies, supporting bidirectional voltage translation only from A-input to B-output. Inputs tolerate up to 3.6 V regardless of VCCA, and outputs are overvoltage-tolerant to 3.6 V even when powered down.
It features high-impedance (Z) 3-state outputs controlled by an active-low OE input, floating-A-bus capability when OE = H, and static protection on all pins. The design targets low-power, high-speed interconnection in battery-sensitive systems like portable electronics and automotive infotainment domain controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 1.1 V to 2.7 V - supports 1.2 V, 1.5 V, 1.8 V, and 2.5 V logic domains on A-side |
| VCCB Range | 1.65 V to 3.6 V - interfaces with 1.8 V, 2.5 V, 3.3 V, and 3.6 V B-side buses |
| tpd (max) | 13.7 ns @ VCCA=2.5 V, VCCB=3.3 V - enables sub-73 MHz data throughput in level-shifted paths |
| IOLB / IOHB (min) | 3 mA @ VCCB=3.0 V - drives standard CMOS loads without external buffering |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Package | US8 (JEDEC SOT-765) - 2.1 mm × 2.0 mm × 0.55 mm ultra-small footprint for space-constrained PCBs |
| Input Tolerance | Up to 3.6 V on all inputs - allows safe connection to higher-voltage buses without clamping diodes |
Pinout & Package
TC7WPN3125FK,LF(CT is housed in an 8-pin US8 package (JEDEC SOT-765), measuring 2.1 mm × 2.0 mm × 0.55 mm with 0.5 mm pitch, optimized for high-density routing and thermal efficiency in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A1) | A-side input 1 | Low-voltage logic input referenced to VCCA; accepts 0.3×VCCA to 0.65×VCCA thresholds |
| 2 (GND) | Ground reference | Common return path for both supply domains; must be low-impedance for noise immunity |
| 3 (A2) | A-side input 2 | Second low-voltage input channel, electrically identical to A1 |
| 4 (VCCA) | A-side supply | Power rail for A-input logic; must be ≤ VCCB per datasheet Note 1 to prevent damage |
| 5 (OE) | Output enable (active low) | When low: enables B1/B2 outputs; when high: places B1/B2 in high-impedance state |
| 6 (VCCB) | B-side supply | Power rail for B-output drivers; sets VOH/VOL levels and output drive strength |
| 7 (B1) | B-side output 1 | Level-translated output referenced to VCCB; tolerates up to 3.6 V regardless of VCCB state |
| 8 (B2) | B-side output 2 | Second level-translated output, matched timing and drive to B1 |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply voltage translation | Enables seamless interfacing between 1.2 V/1.5 V/1.8 V/2.5 V A-buses and 1.8 V/2.5 V/3.3 V/3.6 V B-buses without external level shifters |
| Overvoltage-tolerant I/O | All pins withstand up to 3.6 V input/output voltage - eliminates need for external clamping or series resistors in mixed-rail systems |
| Ultra-low quiescent current | ICCA/ICCB ≤ 2.0 µA (typ.) when OE = H - reduces standby power in always-on subsystems like CAN/LIN gateways |
| Wide temperature range | Rated for –40°C to +125°C operation - meets AEC-Q100 Grade 1 requirements for automotive body electronics |
| 3-state output control | OE pin provides synchronous, rail-to-rail disable of both B1/B2 outputs - supports bus arbitration and shared-data-line topologies |
Applications
| Automotive Domain Controller Interface | Portable SoC Power Management |
|---|---|
|
Use Scenario: Connecting a 1.2 V ARM Cortex-M7 core to a 3.3 V CAN transceiver PHY layer in an ADAS domain controller. IC Role / Device Role / Timing Role: Voltage-level translator and bus isolator; buffers address/data lines while maintaining signal integrity across supply domains. Use Value: Eliminates discrete resistor-divider or active level shifter solutions, reducing BOM count and board area by >40% versus discrete alternatives. |
Use Scenario: Interfacing a 1.5 V application processor I²C bus to a 2.5 V PMIC in a smartphone power management subsystem. IC Role / Device Role / Timing Role: Dual-channel bidirectional buffer with 3-state control; enables dynamic power gating of PMIC registers during sleep mode. Use Value: Achieves <1 µA leakage in OE-high state, extending battery life in always-on sensor hub applications. |
| Industrial PLC Backplane Link | Medical Wearable Sensor Hub |
|
Use Scenario: Isolating a 1.8 V FPGA configuration interface from a 3.6 V industrial I/O expansion module in a modular PLC rack. IC Role / Device Role / Timing Role: Dual-bit bus buffer with OE-controlled isolation; prevents back-driving during hot-swap events. Use Value: Withstands 3.6 V transients on B-pins during insertion, eliminating need for TVS diodes on each signal line. |
Use Scenario: Level-shifting between a 1.2 V ultra-low-power MCU and 1.8 V biopotential analog front-end in an ECG patch. IC Role / Device Role / Timing Role: Low-noise, low-power buffer enabling precise timing alignment of ADC trigger signals across rails. Use Value: 13.7 ns tpd ensures sub-100 ns synchronization margin for 10 kSPS sampling, critical for motion artifact rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0102DCUR | 2-bit auto-direction sensing; no OE pin; supports 1.2 V–3.6 V on both sides; higher ICC in active state (15 µA typ.) | Best for bidirectional I²C/SMBus where direction detection is required; unsuitable for unidirectional buffered control lines | Select TC7WPN3125FK,LF(CT when explicit OE control, lower quiescent current, or guaranteed unidirectional flow is needed. |
| SN74AVC2T244RSWR | 2-bit dual-supply buffer with OE; wider VCCA (1.2–3.6 V) and VCCB (1.2–3.6 V); larger X2SON-8 package (2.5 mm × 2.0 mm) | Supports symmetric rail configurations (e.g., 1.8 V ↔ 1.8 V) and higher drive (12 mA), but lacks 1.2 V A-side optimization | Choose TC7WPN3125FK,LF(CT for minimal footprint and best-in-class 1.2 V A-side timing (29 ns @ 1.2 V/3.3 V vs. 35 ns). |
Compared with TXS0102DCUR and SN74AVC2T244RSWR, TC7WPN3125FK,LF(CT delivers the smallest US8 footprint, lowest standby current (<2 µA), and fastest propagation at 1.2 V A-side operation-making it optimal for space- and power-constrained mixed-voltage control interfaces.
Availability
TC7WPN3125FK,LF(CT is available at Aetrix Electronics and suitable for automotive domain controllers, portable SoC power management subsystems, and industrial PLC backplane links requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.
Supply support for TC7WPN3125FK,LF(CT 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 components for automotive, industrial, and consumer applications, with deep expertise in CMOS process technology and system-level integration.
The TC7WPN3125FK,LF(CT belongs to Toshiba's TC7WP series of ultra-low-voltage dual-supply interface ICs, engineered specifically for energy-efficient voltage translation in next-generation portable and automotive electronics.
FAQ
What is the maximum allowable voltage difference between VCCA and VCCB for TC7WPN3125FK,LF(CT?
The TC7WPN3125FK,LF(CT datasheet explicitly prohibits operation with VCCA > VCCB (Note 1 in Operating Ranges). While absolute maximum ratings allow both supplies up to 4.6 V, functional operation requires VCCA ≤ VCCB. For example, 1.8 V on VCCA and 3.3 V on VCCB is valid; 2.5 V on VCCA and 1.8 V on VCCB violates specification and may cause malfunction or damage. Always ensure VCCA is equal to or lower than VCCB.
Can TC7WPN3125FK,LF(CT be used for bidirectional communication between two voltage domains?
No. TC7WPN3125FK,LF(CT is a unidirectional A-to-B buffer only: signals flow from A1/A2 inputs to B1/B2 outputs. It does not support reverse direction (B-to-A) or auto-direction sensing. For bidirectional I²C or UART level shifting, consider alternatives like TXS0102DCUR. TC7WPN3125FK,LF(CT is intended for controlled, one-way data paths such as CPU-to-peripheral or FPGA-to-IO-expander interfaces.
What is the recommended termination for TC7WPN3125FK,LF(CT outputs driving PCB traces longer than 5 cm?
For traces exceeding 5 cm, terminate TC7WPN3125FK,LF(CT B-side outputs with a 1 kΩ pull-up to VCCB and 30 pF load capacitance (per AC Test Circuit Table 11.1.2), matching the conditions used in datasheet timing characterization. Avoid series resistors on A-side inputs - the device's low input capacitance (7 pF typ.) minimizes reflection risk. Keep OE trace short and directly routed to reduce enable/disable skew.
Does TC7WPN3125FK,LF(CT support hot-plug or live-insertion into a powered system?
Yes - TC7WPN3125FK,LF(CT supports hot-plug operation due to its 3.6 V overvoltage tolerance on all pins and power-down protection. When VCCA is off but VCCB is active, inputs remain protected; when OE = H, B1/B2 enter high-impedance state, preventing back-driving. However, ensure VCCA is ramped before or simultaneously with VCCB per Note 1 in Absolute Maximum Ratings to avoid latch-up.
How does the floating-A-bus feature work in TC7WPN3125FK,LF(CT when OE = H?
When OE = H, TC7WPN3125FK,LF(CT disables B1/B2 outputs (high-impedance Z state) and permits A1/A2 inputs to float - i.e., they need not be tied to VCCA or GND. This reduces system-level power and simplifies PCB routing in standby modes. However, floating A-inputs must not be left unterminated in active-OE states, as noise coupling could cause unintended switching or increased ICC.
TC7WPN3125FK,LF(CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TC7WP
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- 3mA, 3mA
- Voltage - Supply:
- 1.1V ~ 2.7V, 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SSOP
TC7WPN3125FK,LF(CT FAQ
1.How can I place an order for TC7WPN3125FK,LF(CT through Aetrix?
Please submit a Request for Quotation (RFQ) for TC7WPN3125FK,LF(CT 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 TC7WPN3125FK,LF(CT reliable?
The price and inventory of TC7WPN3125FK,LF(CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC7WPN3125FK,LF(CT is usually 5 days.
3.What payment methods are accepted for TC7WPN3125FK,LF(CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC7WPN3125FK,LF(CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC7WPN3125FK,LF(CT?
TC7WPN3125FK,LF(CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC7WPN3125FK,LF(CT 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 TC7WPN3125FK,LF(CT?
For technical support, including TC7WPN3125FK,LF(CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC7WPN3125FK,LF(CT requirements.
6.How does Aetrix verify that TC7WPN3125FK,LF(CT is sourced from the original manufacturer or authorized distributors?
All TC7WPN3125FK,LF(CT 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 TC7WPN3125FK,LF(CT meets industry standards.
7.What is the process for return or replacement of TC7WPN3125FK,LF(CT?
All TC7WPN3125FK,LF(CT units undergo pre-shipment inspection (PSI). If there is an issue with TC7WPN3125FK,LF(CT, 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 TC7WPN3125FK,LF(CT part is unused and in its original packaging.
Return procedure for TC7WPN3125FK,LF(CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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