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Toshiba Semiconductor and Storage TLP2405(F)
- Part No.:
- TLP2405(F)
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Logic Output Optoisolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLP2405(F).pdf
- Description:
- OPTOISO 3.75KV PSH PULL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,548
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Product details
Overview
TLP2405(F) from Toshiba is a high-speed photocoupler integrating a GaAlAs infrared LED and a photo IC with totem-pole logic buffer output, designed for digital signal isolation in industrial control and power electronics. It delivers ±15 kV/µs common-mode transient immunity, 250 ns max propagation delay, and operates from 4.5–20 V supply across –40°C to +100°C - enabling robust isolation in intelligent power module (IPM) gate drive interfaces.
For engineers reviewing the TLP2405(F) datasheet, TLP2405(F) pinout, TLP2405(F) application, or TLP2405(F) equivalent, key selection criteria include guaranteed CMRI performance, SO8 package compatibility, logic-level output sourcing/sinking capability, and UL/VDE safety certification compliance for functional insulation in motor drives and PLC I/O modules.
Technical Context
The TLP2405(F) uses an integrated Faraday shield between input LED and photodetector to achieve ≥±15 kV/µs common-mode transient immunity - critical for noise-prone inverter and servo amplifier environments. Its internal photo IC features a rail-to-rail totem-pole output stage capable of both sourcing and sinking up to ±25 mA, eliminating external pull-up resistors in digital interface designs.
It operates with a low threshold input current (≤1.6 mA), supports wide VCC range (4.5–20 V), and maintains stable switching performance across –40°C to +100°C. The device requires a mandatory 0.1 µF bypass capacitor between pins 8 (VCC) and 5 (GND) placed within 1 cm to ensure high-gain detector stability and prevent false triggering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage | 3750 Vrms min - meets reinforced insulation requirements per UL1577 and EN60747-5-5 (with V4 option) |
| Propagation Delay | 250 ns max (L/H & H/L) - enables reliable >2 MHz digital signal transmission in real-time control loops |
| CM Transient Immunity | ±15 kV/µs min - suppresses fast dv/dt noise from IGBT/MOSFET switching in motor drives and inverters |
| Supply Voltage Range | 4.5–20 V - interoperable with 5 V, 12 V, and 15 V logic and power rails without level-shifting |
| Threshold Input Current | 1.6 mA max - compatible with standard microcontroller GPIO outputs and low-power drivers |
| Operating Temperature | –40°C to +100°C - qualified for under-hood automotive, industrial PLC, and factory automation environments |
| Output Type | Totem-pole buffer - provides active high/low drive (no external pull-up needed) for direct MCU or gate driver interfacing |
Pinout & Package
Housed in an 8-pin SOIC (SO8) package designated 11-5K1S, the TLP2405(F) uses a dual-side creepage-optimized layout with 4.0 mm minimum creepage and clearance for reinforced isolation. Pin 1 is NC; pins 2 and 3 form the LED anode/cathode; pins 5 and 8 are GND and VCC respectively; pin 7 is VO (buffer output); pins 4 and 6 are NC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No Connect | Electrically isolated; must remain unconnected to preserve internal isolation barrier integrity |
| 2 | LED Anode | Input side - connects to MCU GPIO or driver through current-limiting resistor (IF ≤ 10 mA) |
| 3 | LED Cathode | Input side - referenced to input ground; completes LED forward bias path |
| 4 | No Connect | Electrically isolated; must remain unconnected to preserve internal isolation barrier integrity |
| 5 | GND | Detector ground - reference for output logic levels; must be tied to local system ground on output side |
| 6 | No Connect | Electrically isolated; must remain unconnected to preserve internal isolation barrier integrity |
| 7 | VO (Output) | Buffered logic output - actively drives high/low; sinks or sources up to ±25 mA at VCC = 5–20 V |
| 8 | VCC | Detector supply - powers photo IC; requires 0.1 µF ceramic bypass cap to pin 5 (GND) within 1 cm |
Key Features
| Feature | Design Value |
|---|---|
| Faraday shield isolation | Guarantees ≥±15 kV/µs CMRI - prevents false triggering during high dv/dt IGBT switching |
| Totem-pole output stage | Eliminates need for external pull-up resistors - reduces BOM count and PCB space in digital isolator designs |
| UL1577 / VDE EN60747-5-5 certified | Validated 3750 Vrms isolation - satisfies safety requirements for industrial equipment and IPM signal interfaces |
| Wide VCC operating range | 4.5–20 V support - enables direct use with 5 V microcontrollers, 12 V logic, and 15 V gate driver supplies |
| Low IF threshold | ≤1.6 mA max - ensures compatibility with low-drive-strength MCUs and saves power in battery-backed systems |
Applications
| Industrial Motor Drives | Programmable Logic Controllers |
|---|---|
|
Use Scenario: Isolating PWM signals between MCU and IGBT gate drivers in variable-frequency drives (VFDs). IC Role / Device Role / Timing Role: Signal-level isolation barrier with <250 ns propagation delay and ±15 kV/µs CMRI to prevent noise coupling into control logic. Use Value: Enables clean, jitter-free gate drive timing under high dv/dt conditions - improving inverter efficiency and reducing EMI. |
Use Scenario: Digital input/output isolation in modular PLC backplanes handling 24 V DC field signals. IC Role / Device Role / Timing Role: High-speed logic buffer isolator providing galvanic separation between field-side and CPU-side circuits. Use Value: Supports >1 MHz scan rates while maintaining safety isolation - critical for deterministic real-time I/O response. |
| Intelligent Power Modules | Communications Equipment |
|
Use Scenario: Fault signal feedback and enable/disable isolation in IPMs used in servo amplifiers and robotics. IC Role / Device Role / Timing Role: Bidirectional-capable buffer isolator (sourcing/sinking) for status and control lines with rail-to-rail output swing. Use Value: Eliminates level shifters and discrete buffers - simplifying IPM interface design and improving fault response time. |
Use Scenario: Isolating RS-485 transceiver control lines and data paths in telecom base station power management units. IC Role / Device Role / Timing Role: High-reliability digital isolator meeting UL/VDE standards for functional insulation in multi-voltage subsystems. Use Value: Prevents ground loop currents and protects sensitive communication ICs from surge-induced latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed photocoupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLP2408(F) | Inverter logic output (non-inverting buffer in TLP2405 vs. inverting in TLP2408); identical package, isolation, and timing specs | Used where inverted control logic is required (e.g., active-low enable signals); same PCB footprint and thermal profile | Select TLP2408(F) only when system-level logic inversion is needed - no change to isolation or drive capability |
| ACPL-K30T | Higher speed (15 MBd), lower IF threshold (0.5 mA typ), but smaller SO-5 package and 3750 Vrms isolation only under specific test conditions | Better suited for high-density, high-data-rate serial links; lacks Faraday shield - lower CMRI (10 kV/µs) | Choose ACPL-K30T for compact, high-speed serial isolation; retain TLP2405(F) where guaranteed ±15 kV/µs CMRI is mandatory |
Compared with TLP2408(F), the TLP2405(F) provides non-inverted logic output essential for direct MCU interface without external inversion; versus ACPL-K30T, it trades raw speed for superior noise immunity and certified reinforced isolation - making it preferred for safety-critical power electronics.
Availability
TLP2405(F) is available at Aetrix Electronics and suitable for industrial motor drives, programmable logic controllers, and intelligent power module signal isolation requiring stable component supply, long-term lifecycle support, and traceable safety-certified sourcing.
Supply support for TLP2405(F) 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 industrial, automotive, and consumer applications, with deep expertise in optoelectronics and power management.
The TLP2405(F) belongs to Toshiba's high-speed photocoupler product line, engineered specifically for noise-immune digital signal isolation in power electronics - emphasizing CMRI performance, safety certification, and robust operation across extended temperature ranges.
FAQ
What is the maximum recommended input forward current for TLP2405(F)?
The absolute maximum input forward current (IF) for TLP2405(F) is 25 mA at Ta = 25°C, derating linearly to 16.7 mA at Ta = 85°C. For reliable long-term operation, Toshiba recommends limiting IF to ≤10 mA under normal conditions - sufficient to guarantee turn-on with its 1.6 mA max threshold current while preserving LED lifetime and thermal margin.
Does TLP2405(F) require an external bypass capacitor, and if so, where?
Yes, TLP2405(F) requires a 0.1 µF ceramic bypass capacitor connected directly between pin 8 (VCC) and pin 5 (GND), placed within 1 cm of those pins. This capacitor stabilizes the internal photo IC's high-gain amplifier and prevents oscillation or false switching - omission risks unreliable output behavior, especially under high-speed or noisy conditions.
Is TLP2405(F) certified for reinforced insulation per IEC/EN 60747-5-5?
TLP2405(F) meets EN60747-5-5 requirements when ordered with the V4 option (e.g., TLP2405(V4-TP,F)). The base TLP2405(F) is UL1577 and cUL-approved (File E67349) and VDE-certified for basic insulation; V4 adds full EN60747-5-5 qualification including enhanced partial discharge and insulation coordination testing.
Can TLP2405(F) drive a MOSFET gate directly?
No, TLP2405(F) is not intended for direct MOSFET gate driving. Its totem-pole output delivers ≤±25 mA peak current and is optimized for logic-level signal isolation - not high-current gate charging. It should interface with dedicated gate drivers (e.g., TC4420, UCC27531) or logic inputs of IPMs, not power FET gates directly.
What is the meaning of "N.C." on pins 1, 4, and 6 of TLP2405(F)?
Pins 1, 4, and 6 of TLP2405(F) are No Connect (N.C.) terminals - electrically isolated from both input and output circuits. They must remain unconnected on the PCB to maintain the rated 3750 Vrms isolation barrier and avoid compromising creepage/clearance distances. Soldering or routing to these pins voids safety certification.
TLP2405(F) Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Channels:
- 1
- Inputs - Side 1/Side 2:
- 1/0
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 15kV/µs
- Input Type:
- DC
- Output Type:
- Push-Pull, Totem Pole
- Current - Output / Channel:
- 25 mA
- Data Rate:
- 5Mbps
- Propagation Delay tpLH / tpHL (Max):
- 250ns, 250ns
- Rise / Fall Time (Typ):
- 30ns, 30ns
- Voltage - Forward (Vf) (Typ):
- 1.57V
- Current - DC Forward (If) (Max):
- 25mA
- Voltage - Supply:
- 4.5V ~ 20V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 100°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
TLP2405(F) FAQ
1.How can I place an order for TLP2405(F) through Aetrix?
Please submit a Request for Quotation (RFQ) for TLP2405(F) 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 TLP2405(F) reliable?
The price and inventory of TLP2405(F) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLP2405(F) is usually 5 days.
3.What payment methods are accepted for TLP2405(F)?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLP2405(F) transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLP2405(F)?
TLP2405(F) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLP2405(F) 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 TLP2405(F)?
For technical support, including TLP2405(F) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLP2405(F) requirements.
6.How does Aetrix verify that TLP2405(F) is sourced from the original manufacturer or authorized distributors?
All TLP2405(F) 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 TLP2405(F) meets industry standards.
7.What is the process for return or replacement of TLP2405(F)?
All TLP2405(F) units undergo pre-shipment inspection (PSI). If there is an issue with TLP2405(F), 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 TLP2405(F) part is unused and in its original packaging.
Return procedure for TLP2405(F):
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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