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Toshiba Semiconductor and Storage TC7WH125FK
- Part No.:
- TC7WH125FK
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
TC7WH125FK.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V US8
- Quantity:
- Payment:
- Shipping:
Inventory:2,514
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Product details
Overview
TC7WH125FK from Toshiba Electronic Devices & Storage Corporation is a dual-channel CMOS bus buffer with 3-state outputs, designed for bidirectional data routing in high-speed digital systems. It operates across 2.0–5.5 V supply, delivers 3.8 ns typical propagation delay at 5.0 V/15 pF, supports AEC-Q100 Grade 1 qualification (−40 to +125 °C), and features 5.5 V tolerant inputs-enabling use in mixed-voltage automotive and industrial control interfaces.
For engineers reviewing the TC7WH125FK datasheet, TC7WH125FK pinout, TC7WH125FK application, or TC7WH125FK equivalent, key selection criteria include its dual 3-state buffer architecture, guaranteed −40 to +125 °C operation, low ICC of 2.0 µA max, high noise immunity (VNIH/VNIL ≥ 28% VCC), and US8 (SOT-765) 8-pin package compatibility with space-constrained PCB layouts.
Technical Context
The TC7WH125FK integrates two independent non-inverting buffers, each with active-low 3-state enable control (G1, G2), allowing selective isolation of data paths in shared-bus architectures. Its input structure accepts voltages up to 5.5 V regardless of VCC, enabling level translation between 3.3 V logic domains and 5 V peripherals without external components.
It employs advanced CMOS process technology to achieve simultaneous low power (ICC ≤ 40 µA over full temperature range) and high speed (tPLH/tPHL ≤ 11.0 ns at 3.3 V/15 pF, −40 to +125 °C), while maintaining rail-to-rail output swing and tight output skew (tosLH/tosHL ≤ 16.5 ns) critical for timing-critical bus arbitration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Dual non-inverting 3-state bus buffer - enables/disables two independent data paths via separate G1/G2 controls |
| Supply Voltage Range | 2.0 to 5.5 V - supports interoperability across 2.5 V, 3.3 V, and 5 V logic families |
| Propagation Delay | 3.8 ns typ. at VCC = 5.0 V, CL = 15 pF - ensures sub-4 ns timing margin for 100+ MHz bus cycles |
| Operating Temperature | −40 to +125 °C - qualified per AEC-Q100 Rev. H for under-hood automotive applications |
| Input Tolerance | 5.5 V tolerant inputs - allows direct connection to 5 V signals even when VCC = 2.0–3.3 V |
| Quiescent Current | 2.0 µA max at TA = 25 °C - minimizes standby power in always-on vehicle modules |
| Output Drive | ±8 mA at VCC = 4.5 V - sufficient to drive 15 pF loads with <0.55 V VOL at full temperature range |
Pinout & Package
TC7WH125FK is housed in an 8-pin US8 package (JEDEC SOT-765), measuring 2.1 × 2.3 × 0.9 mm with 0.5 mm pitch, optimized for high-density automotive PCBs and thermally constrained environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G1) | Channel 1 Output Enable (active-low) | Asserting low enables Y1 output; high places Y1 in high-impedance state |
| 2 (A1) | Channel 1 Input | Non-inverting data input for first buffer channel |
| 3 (Y1) | Channel 1 Output | 3-state buffered output corresponding to A1, controlled by G1 |
| 4 (GND) | Ground Reference | Common return path for all internal circuitry and I/O |
| 5 (Y2) | Channel 2 Output | 3-state buffered output corresponding to A2, controlled by G2 |
| 6 (A2) | Channel 2 Input | Non-inverting data input for second buffer channel |
| 7 (G2) | Channel 2 Output Enable (active-low) | Asserting low enables Y2 output; high places Y2 in high-impedance state |
| 8 (VCC) | Positive Supply | Primary power rail (2.0–5.5 V); powers both channels and internal logic |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 compliance | Validated for automotive applications requiring −40 to +125 °C operation and robust reliability |
| 5.5 V tolerant inputs | Eliminates need for external level shifters when interfacing 5 V sensors or legacy peripherals to 3.3 V microcontrollers |
| Low dynamic noise (VOLP ≤ 0.8 V) | Reduces crosstalk and signal integrity risk in high-speed parallel buses with multiple simultaneously switching outputs |
| High noise immunity (VNIH/VNIL ≥ 28% VCC) | Ensures reliable logic-level recognition in electrically noisy engine control or powertrain environments |
| Ultra-low ICC (≤ 40 µA max at +125 °C) | Supports extended battery runtime in always-on telematics and ADAS modules |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Isolating CAN transceiver TX/RX lines from microcontroller GPIO during firmware updates or fault recovery. IC Role / Device Role / Timing Role: Dual 3-state buffer provides independent enable control for bidirectional signal routing without bus contention. Use Value: Prevents spurious CAN frame transmission during MCU reset using G1/G2 sequencing, leveraging guaranteed −40 to +125 °C operation. |
Use Scenario: Expanding digital input count on a 24 V industrial controller by buffering 3.3 V FPGA I/O to 24 V field-side optocouplers. IC Role / Device Role / Timing Role: Level-translating bus buffer interfaces low-voltage logic to higher-voltage isolation stages. Use Value: 5.5 V tolerant inputs accept 24 V-derived logic levels via resistive dividers; 2.0–5.5 V VCC range matches FPGA core voltage. |
| Automotive Infotainment Head Unit | Medical Diagnostic Equipment Data Bus |
Use Scenario: Sharing a single SPI flash memory between application processor and safety-monitoring MCU in ASIL-B compliant head units. IC Role / Device Role / Timing Role: Dual-channel buffer isolates memory access paths with independent enable control for time-sliced arbitration. Use Value: Sub-4 ns propagation delay preserves SPI timing margins at 25 MHz; AEC-Q100 qualification ensures long-term reliability in thermal cycling environments. |
Use Scenario: Buffering high-resolution ADC output streams from analog front-end to FPGA in portable ultrasound devices. IC Role / Device Role / Timing Role: Low-skew dual buffer maintains phase alignment between parallel data lanes during high-speed sampling. Use Value: Output skew ≤ 16.5 ns at +125 °C ensures synchronized capture of multi-channel echo data without inter-lane timing drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC2G125DBVR | Same US8 package, but rated only to +85 °C (not AEC-Q100); tPD = 3.7 ns at 3.3 V, slightly lower drive (±24 mA) | Lacks automotive qualification; suitable for commercial industrial or consumer designs with relaxed temp range | Select SN74LVC2G125DBVR only if AEC-Q100 and >85 °C operation are not required. |
| 74LVC2G125GW,125 | DFN1010-8 package (1.0 × 1.0 mm), same −40 to +125 °C rating, but no AEC-Q100 documentation; tPD = 4.2 ns at 3.3 V | Smaller footprint but unqualified for automotive; lacks explicit 5.5 V input tolerance spec | Choose 74LVC2G125GW,125 for ultra-compact layouts where AEC-Q100 is not mandated. |
Compared with SN74LVC2G125DBVR and 74LVC2G125GW,125, the TC7WH125FK uniquely combines AEC-Q100 Grade 1 certification, 5.5 V input tolerance, and guaranteed −40 to +125 °C electrical performance - making it the only option qualified for safety-critical automotive bus isolation without derating or additional validation.
Availability
TC7WH125FK is available at Aetrix Electronics and suitable for automotive body control, industrial PLC expansion, infotainment system design, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TC7WH125FK 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 is a global semiconductor manufacturer specializing in power devices, logic ICs, and storage solutions, with deep expertise in automotive-grade reliability and industrial interface components.
The TC7WH125FK belongs to Toshiba's TC7WH series of high-speed, low-power dual bus buffers engineered specifically for automotive and industrial applications demanding wide voltage operation, AEC-Q100 compliance, and robust noise immunity.
FAQ
What is the maximum operating temperature range certified for the TC7WH125FK?
The TC7WH125FK is fully specified and AEC-Q100 Rev. H qualified for continuous operation from −40 to +125 °C. This rating is explicitly confirmed in the datasheet's Operating Ranges section (Section 8) and applies to all DC and AC electrical characteristics including propagation delay, output drive, and leakage current - making TC7WH125FK suitable for under-hood automotive locations and thermally aggressive industrial enclosures.
Does the TC7WH125FK support level shifting between different supply voltages?
Yes, the TC7WH125FK supports true level shifting: its inputs tolerate up to 5.5 V regardless of VCC setting (2.0–5.5 V), enabling direct connection of 5 V signals to a 3.3 V-powered TC7WH125FK without external resistors or translators. The output swing remains rail-to-rail (VOH ≥ VCC − 0.1 V, VOL ≤ 0.1 V), preserving logic thresholds for downstream 3.3 V or 5 V receivers.
Is the TC7WH125FK pin-compatible with other dual 3-state buffers in US8 packages?
The TC7WH125FK uses the standard US8 (SOT-765) 8-pin layout with G1-A1-Y1-GND-Y2-A2-G2-VCC ordering. While physically compatible with other US8 dual buffers like SN74LVC2G125DBVR, pin function mapping differs: SN74LVC2G125DBVR uses GND-A1-Y1-G1-A2-Y2-G2-VCC. Thus, TC7WH125FK is not pin-compatible - PCB layout must follow its specific pin assignment to avoid functional failure.
What is the guaranteed propagation delay for the TC7WH125FK at 3.3 V supply?
At VCC = 3.3 ± 0.3 V and CL = 15 pF, the TC7WH125FK guarantees tPLH/tPHL ≤ 8.0 ns (max) over −40 to +125 °C, with a typical value of 5.6 ns. This specification is documented in Section 9.4 (AC Characteristics, Ta = 25 °C) and Section 9.6 (Ta = −40 to +125 °C), ensuring predictable timing behavior in 3.3 V automotive and industrial systems.
How does the TC7WH125FK handle unused inputs?
Per Section 8 of the datasheet, all unused inputs on the TC7WH125FK must be tied to either VCC or GND - floating inputs are prohibited. Leaving G1 or G2 unconnected risks indeterminate 3-state control, potentially causing bus contention; leaving A1 or A2 floating increases susceptibility to noise-induced switching and elevated ICC. Proper termination ensures deterministic operation and meets AEC-Q100 reliability requirements.
TC7WH125FK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TC7WH
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SSOP
TC7WH125FK FAQ
1.How can I place an order for TC7WH125FK through Aetrix?
Please submit a Request for Quotation (RFQ) for TC7WH125FK 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 TC7WH125FK reliable?
The price and inventory of TC7WH125FK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC7WH125FK is usually 5 days.
3.What payment methods are accepted for TC7WH125FK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC7WH125FK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC7WH125FK?
TC7WH125FK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC7WH125FK 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 TC7WH125FK?
For technical support, including TC7WH125FK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC7WH125FK requirements.
6.How does Aetrix verify that TC7WH125FK is sourced from the original manufacturer or authorized distributors?
All TC7WH125FK 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 TC7WH125FK meets industry standards.
7.What is the process for return or replacement of TC7WH125FK?
All TC7WH125FK units undergo pre-shipment inspection (PSI). If there is an issue with TC7WH125FK, 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 TC7WH125FK part is unused and in its original packaging.
Return procedure for TC7WH125FK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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