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Toshiba Semiconductor and Storage TC7WH34FU,LJ(CT
- Part No.:
- TC7WH34FU,LJ(CT
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 8-TSSOP, 8-MSOP (0.110", 2.80mm Width)
- Datasheet:
-
TC7WH34FU,LJ(CT.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SM8
- Quantity:
- Payment:
- Shipping:
Inventory:1,227
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Product details
Overview
TC7WH34FU,LJ(CT from Toshiba Electronic Devices & Storage Corporation is a triple non-inverting buffer IC in SM8 (SOT-505) package, operating from 2.0 V to 5.5 V supply, delivering 3.8 ns typical propagation delay at 5.0 V/15 pF, with 2.0 µA max quiescent current and -40 °C to 125 °C industrial temperature range - used for signal conditioning and fanout expansion in automotive body control modules.
For engineers reviewing the TC7WH34FU,LJ(CT datasheet, TC7WH34FU,LJ(CT pinout, TC7WH34FU,LJ(CT application, or TC7WH34FU,LJ(CT equivalent, key selection criteria include input tolerance up to 5.5 V, balanced tPLH/tPHL timing, high noise immunity (28 % VCC), and compatibility with legacy TC7W34 layouts.
Technical Context
The TC7WH34FU,LJ(CT implements three independent CMOS non-inverting buffers on a single silicon monolithic die, each with rail-to-rail input voltage capability (–0.5 V to 7.0 V) and 5.5 V tolerant inputs - enabling level-shifting between mixed-voltage subsystems without external resistors. Its design supports hot-swap-safe operation via controlled output drive strength and low ICC.
Propagation delays are tightly matched (tPLH ≈ tPHL), minimizing skew across buffered channels, while input capacitance remains stable at 4 pF (typ.) - critical for maintaining signal integrity in high-speed digital interfaces such as I²C bus buffering and microcontroller GPIO expansion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.0 V to 5.5 V - supports direct interface with 3.3 V and 5 V logic families without level shifters. |
| Propagation Delay | 3.8 ns (typ.) at VCC = 5.0 V, CL = 15 pF - enables reliable operation in sub-100 MHz digital control paths. |
| Quiescent Current | 2.0 µA (max) at Ta = 25 °C - ensures minimal standby power in battery-backed or energy-sensitive systems. |
| Input Tolerance | 5.5 V tolerant inputs - allows safe connection to higher-voltage buses without clamping diodes or external protection. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial motor control environments. |
| Noise Immunity | VNIH = VNIL = 28 % VCC (min) - provides robust rejection of EMI-induced glitches on noisy PCBs. |
| Output Drive | ±8 mA at VCC = 4.5 V - sufficient to drive 10+ CMOS loads or terminate short traces without external buffers. |
Pinout & Package
TC7WH34FU,LJ(CT uses the SM8 (JEDEC SOT-505) 8-pin ultra-thin leadless package (2.0 × 2.5 mm, 0.5 mm pitch), optimized for space-constrained automotive and portable electronics. Pin assignment is identical to TC7W34, supporting drop-in replacement in existing designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input A1 | Non-inverted input for first buffer channel; accepts –0.5 V to 7.0 V, compatible with 5 V-tolerant signaling. |
| 2 | Ground (GND) | Reference return path for all internal logic and output stages; requires low-inductance PCB connection. |
| 3 | Output Y1 | Inverted-phase output of A1; drives CMOS loads with matched tPLH/tPHL for minimal skew. |
| 4 | Output Y2 | Output of second buffer; electrically isolated from Y1 but shares same VCC/GND rails. |
| 5 | Input A2 | Input for second buffer; identical electrical specs to A1, enabling parallel signal conditioning. |
| 6 | VCC | Positive supply rail (2.0–5.5 V); decoupling capacitor (0.1 µF) required within 3 mm of this pin. |
| 7 | Input A3 | Input for third buffer; supports same wide voltage and timing specs as A1/A2. |
| 8 | Output Y3 | Output of third buffer; fully specified for 15 pF load and 3.8 ns delay at 5 V. |
Key Features
| Feature | Design Value |
|---|---|
| Triple Non-Inverting Buffer | Three independent, matched-delay buffers on one die - reduces component count and board area vs. discrete solutions. |
| Balanced Propagation Delays | tPLH ≈ tPHL minimizes pulse distortion and duty-cycle degradation in clock or data lines. |
| 5.5 V Tolerant Inputs | Enables direct interfacing with 5 V peripherals while powered from 3.3 V - eliminates level-shifter ICs. |
| Wide Operating Voltage Range | 2.0–5.5 V operation supports multi-rail systems and brown-out resilience during supply transients. |
| High Noise Immunity | 28 % VCC noise margin ensures reliable switching even with >200 mV of coupled noise on input traces. |
Applications
| Automotive Body Control Unit | I²C Bus Signal Conditioning |
|---|---|
Use Scenario: Isolating and strengthening GPIO signals from MCU to door lock actuators and mirror position sensors in harsh automotive environments. IC Role / Device Role / Timing Role: Triple non-inverting buffer providing noise-immune signal fanout and voltage-level compatibility between 3.3 V MCU and 5 V sensor interfaces. Use Value: Eliminates need for discrete buffers or level shifters while meeting AEC-Q100 Grade 1 temperature requirements (–40 °C to +125 °C). |
Use Scenario: Strengthening SDA/SCL lines in multi-master I²C systems with long trace lengths or >10 slave devices. IC Role / Device Role / Timing Role: Low-capacitance (4 pF), low-skew buffer preserving rise/fall time integrity and preventing bus contention-induced glitches. Use Value: Enables reliable 400 kHz I²C Fast Mode operation over 20 cm PCB traces without signal degradation. |
| Industrial PLC Digital I/O Expansion | Portable Medical Device GPIO Interface |
Use Scenario: Expanding microcontroller GPIO count to drive multiple optocouplers and relay drivers in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: High-drive (±8 mA), low-quiescent-current buffer enabling direct interface with industrial isolation components. Use Value: Reduces BOM cost and layout complexity versus discrete transistor-based buffer arrays while maintaining <2 µA sleep current. |
Use Scenario: Interfacing low-power ARM Cortex-M0+ MCU GPIOs with tactile feedback LEDs and status indicators in handheld diagnostic tools. IC Role / Device Role / Timing Role: Ultra-low ICC (2.0 µA max) triple buffer ensuring >72-hour battery life in always-on monitoring mode. Use Value: Meets IEC 62304 Class B software safety requirements by eliminating leakage-path risks associated with unbuffered GPIOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple non-inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TC7W34FU,LJ(CT | Same pinout and function, but rated only to +85 °C (Topr = –40 to +85 °C); lower max ICC (1.0 µA). | Suitable for commercial-grade consumer or office equipment where extended temperature is not required. | Select when cost sensitivity outweighs automotive/industrial temperature needs and lower ICC is beneficial. |
| SN74LVC3G17DCUR | 3-channel Schmitt-trigger buffer (not standard non-inverter); 1.65–5.5 V VCC; 3.7 ns tpd at 3.3 V. | Preferred for noisy analog-digital boundary interfaces requiring hysteresis, not pure signal fanout. | Choose only if input signal edges are slow or noisy - TC7WH34FU,LJ(CT lacks Schmitt trigger action. |
Compared with TC7W34FU,LJ(CT and SN74LVC3G17DCUR, the TC7WH34FU,LJ(CT uniquely combines 125 °C operation, 5.5 V input tolerance, and matched tPLH/tPHL - making it the only option qualified for under-hood automotive signal buffering without derating or redesign.
Availability
TC7WH34FU,LJ(CT is available at Aetrix Electronics and suitable for automotive body control units, industrial PLC I/O expansion, and portable medical device interfaces requiring stable component supply across extended temperature and long lifecycle programs.
Supply support for TC7WH34FU,LJ(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 and manufactures high-reliability semiconductor components for automotive, industrial, and consumer applications, with emphasis on AEC-Q100 qualification and long-term supply stability.
The TC7WH34FU,LJ(CT belongs to Toshiba's TC7WH series of high-speed, low-power CMOS logic ICs - engineered specifically for noise-immune signal routing in automotive ECUs and industrial control systems where thermal robustness and input voltage flexibility are critical.
FAQ
What is the maximum operating temperature for TC7WH34FU,LJ(CT?
The TC7WH34FU,LJ(CT is rated for continuous operation from –40 °C to +125 °C, as confirmed in its Absolute Maximum Ratings and Operating Ranges tables. This specification applies specifically to devices with ordering part number ending in J(CT, distinguishing it from variants limited to +85 °C. The TC7WH34FU,LJ(CT meets industrial and automotive under-hood thermal requirements without derating.
Does TC7WH34FU,LJ(CT support 3.3 V and 5 V logic simultaneously?
Yes, the TC7WH34FU,LJ(CT operates from 2.0 V to 5.5 V and features 5.5 V tolerant inputs - allowing it to accept 5 V signals while powered from a 3.3 V supply. This enables seamless level translation between mixed-voltage subsystems without external components. The TC7WH34FU,LJ(CT maintains full timing and drive specifications across this range.
Is TC7WH34FU,LJ(CT pin-compatible with TC7W34FU,LJ(CT?
Yes, the TC7WH34FU,LJ(CT has identical pin assignment and function to TC7W34FU,LJ(CT, as explicitly stated in the "Features" section of the datasheet. However, TC7WH34FU,LJ(CT extends the operating temperature range to +125 °C and specifies higher input voltage tolerance, while TC7W34FU,LJ(CT is limited to +85 °C.
What is the typical input capacitance of TC7WH34FU,LJ(CT?
The TC7WH34FU,LJ(CT exhibits 4 pF typical input capacitance (CIN), measured at VCC = 3.3 V and 5.0 V with 3 ns input edge rates. This low value minimizes loading on upstream drivers and preserves signal edge integrity in high-speed digital paths. The TC7WH34FU,LJ(CT maintains consistent CIN across its full operating voltage and temperature range.
Can TC7WH34FU,LJ(CT drive a 50 pF load reliably?
Yes, the TC7WH34FU,LJ(CT is fully characterized for 50 pF loads: propagation delay is specified up to 7.5 ns (typ.) at 5.0 V, and output drive capability remains ±8 mA. Its balanced tPLH/tPHL ensures minimal duty-cycle distortion even under heavy capacitive loading. The TC7WH34FU,LJ(CT delivers stable performance across –40 °C to +125 °C with 50 pF.
TC7WH34FU,LJ(CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TC7WH
- Package/Case:
- 8-TSSOP, 8-MSOP (0.110", 2.80mm 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:
- Push-Pull
- 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
TC7WH34FU,LJ(CT FAQ
1.How can I place an order for TC7WH34FU,LJ(CT through Aetrix?
Please submit a Request for Quotation (RFQ) for TC7WH34FU,LJ(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 TC7WH34FU,LJ(CT reliable?
The price and inventory of TC7WH34FU,LJ(CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC7WH34FU,LJ(CT is usually 5 days.
3.What payment methods are accepted for TC7WH34FU,LJ(CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC7WH34FU,LJ(CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC7WH34FU,LJ(CT?
TC7WH34FU,LJ(CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC7WH34FU,LJ(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 TC7WH34FU,LJ(CT?
For technical support, including TC7WH34FU,LJ(CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC7WH34FU,LJ(CT requirements.
6.How does Aetrix verify that TC7WH34FU,LJ(CT is sourced from the original manufacturer or authorized distributors?
All TC7WH34FU,LJ(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 TC7WH34FU,LJ(CT meets industry standards.
7.What is the process for return or replacement of TC7WH34FU,LJ(CT?
All TC7WH34FU,LJ(CT units undergo pre-shipment inspection (PSI). If there is an issue with TC7WH34FU,LJ(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 TC7WH34FU,LJ(CT part is unused and in its original packaging.
Return procedure for TC7WH34FU,LJ(CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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