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Toshiba Semiconductor and Storage TLP2391(TPL,E
- Part No.:
- TLP2391(TPL,E
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Logic Output Optoisolators
- Package:
- 6-SOIC (0.179", 4.55mm Width), 5 Leads
- Datasheet:
-
TLP2391(TPL,E.pdf
- Description:
- X36 PB PHOTOCOUPLER DUAL POLARIT
- Quantity:
- Payment:
- Shipping:
Inventory:6,934
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Product details
Overview
TLP2391(TPL,E from Toshiba Electronic Devices & Storage Corporation is a high-speed, logic-output photocoupler with dual reverse-parallel infrared LEDs and a totem-pole photo IC output stage. It delivers 10 Mbps data transfer rate, ±20 kV/µs common-mode transient immunity, and operates across -40°C to +125°C - enabling robust digital isolation in industrial PLC I/O modules and inverter gate drive interfaces.
For engineers reviewing the TLP2391(TPL,E datasheet, TLP2391(TPL,E pinout, TLP2391(TPL,E application, or TLP2391(TPL,E equivalent, this device serves as a low-power (1 mA max supply current), bidirectional-input isolator optimized for high-noise factory-floor signal conditioning where guaranteed 3750 Vrms isolation and sub-100 ns propagation delay are critical.
Technical Context
The TLP2391(TPL,E integrates two antiparallel GaAs infrared LEDs coupled to a monolithic silicon photodetector with internal Faraday shielding. Its totem-pole output supports both sourcing and sinking without external pull-ups, while the dual-LED configuration enables compatibility with sinking and sourcing input circuits without polarity-dependent wiring.
It operates from 2.7 V to 5.5 V supply, features guaranteed low threshold input current (2.5 mA max at 5 V), and maintains stable switching performance across its full -40°C to +125°C operating range - validated by pulse width distortion ≤30 ns and propagation delay skew ≤40 ns between units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 10 Mbps typical - supports high-speed serial communication (e.g., RS-485, SPI isolation) without timing bottlenecks |
| Propagation delay | 100 ns maximum - ensures deterministic timing in real-time control loops and fast-switching inverters |
| Common-mode transient immunity | ±20 kV/µs minimum - suppresses noise coupling in motor drives and high-di/dt industrial environments |
| Isolation voltage | 3750 Vrms minimum - meets reinforced insulation requirements for IEC 61800-5-1 and UL 1577 safety compliance |
| Supply current | 1 mA maximum - reduces power budget in battery-backed or energy-constrained isolated I/O designs |
| Input threshold current | 2.5 mA maximum at VCC = 5 V - compatible with standard microcontroller GPIOs and logic-level drivers without external amplification |
| Operating temperature | -40°C to +125°C - qualified for under-hood automotive auxiliary systems and industrial motor control cabinets |
Pinout & Package
Package: SO6 (TOSHIBA designation 11-4L1S), surface-mount, 6-pin small-outline package with 1.27 mm pitch and 0.08 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 / 3 | Anode/Cathode (reverse-parallel LED pair) | Accepts bidirectional DC or AC input signals; eliminates need for external polarity selection circuitry |
| 4 | GND | Detector ground reference; must be connected to 0.1 µF bypass capacitor with pin 6 (VCC) per layout guidelines |
| 5 | VO (Output) | Totem-pole logic output - actively drives high or low; no external pull-up required for CMOS-compatible interfacing |
| 6 | VCC | Positive supply for detector (2.7–5.5 V); requires local decoupling to stabilize high-gain amplifier operation |
Key Features
| Feature | Design Value |
|---|---|
| Inverter logic output | Totem-pole VO pin provides rail-to-rail CMOS-compatible output swing without external components |
| Bidirectional input capability | Dual antiparallel LEDs enable direct connection to both sourcing and sinking PLC outputs without redesign |
| High CMTI | Guaranteed ±20 kV/µs common-mode transient immunity ensures reliable operation near IGBT/MOSFET switching nodes |
| Low power consumption | 1 mA max supply current and 2.5 mA max input threshold reduce heat generation in dense I/O modules |
| Safety-certified isolation | UL 1577 (E67349), cUL, and VDE EN IEC 60747-5-5 (with V4 option) - supports certified industrial system design |
Applications
| Programmable Logic Controller (PLC) Input Modules | Industrial Inverter Gate Drive Isolation |
|---|---|
Use Scenario: Isolating 24 V DC field inputs from backplane logic in modular PLC chassis exposed to EMI from nearby motor contactors. IC Role / Device Role / Timing Role: Digital input isolator providing level translation and noise rejection between field-side sensors and controller-side FPGA/CPU. Use Value: Bidirectional LED input accepts both sink and source wiring configurations; ±20 kV/µs CMTI prevents false triggering during contactor switching transients. |
Use Scenario: Transmitting PWM signals from an MCU to isolated gate drivers in 3-phase VFDs operating at 16 kHz switching frequency. IC Role / Device Role / Timing Role: High-speed digital isolator ensuring accurate edge timing between control logic and power stage, minimizing shoot-through risk. Use Value: 100 ns max propagation delay and 30 ns max pulse width distortion preserve PWM duty cycle fidelity across temperature. |
| High-Speed Instrumentation Data Links | Factory Automation Safety Interlocks |
Use Scenario: Isolating SPI clock/data lines between a precision ADC front-end and host processor in a noisy test bench environment. IC Role / Device Role / Timing Role: Signal-level isolator preserving high-frequency integrity of synchronous serial interfaces up to 10 Mbps. Use Value: 10 Mbps typical data rate and low capacitance (<0.4 pF) minimize jitter and bit error rate in multi-drop sensor networks. |
Use Scenario: Implementing Category 3 emergency stop monitoring in ISO 13849-1 compliant machinery with redundant channel validation. IC Role / Device Role / Timing Role: Certified isolator enabling safe separation of e-stop feedback signals from safety PLC inputs. Use Value: 3750 Vrms isolation rating and VDE EN IEC 60747-5-5 qualification (with V4 option) support functional safety architecture requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed logic-output photocoupler applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACPL-K37T | Higher supply current (2.5 mA max), slower propagation delay (150 ns max), same SO6 package | Targeted at lower-speed industrial I/O where CMTI >15 kV/µs suffices | Select when cost sensitivity outweighs need for sub-100 ns timing or ultra-low power |
| SI8710BD-A-IS | Digital CMOS isolator (capacitive coupling), 15 Mbps, 30 ns propagation delay, wider supply (2.5–5.5 V) | Not optically isolated; lacks inherent galvanic barrier for safety-critical fault containment | Prefer only in non-safety applications requiring higher speed and lower power; not drop-in replacement due to different isolation mechanism |
Compared with ACPL-K37T and SI8710BD-A-IS, the TLP2391(TPL,E offers best-in-class balance of speed (10 Mbps), ultra-low supply current (1 mA), and certified optical isolation - making it optimal for space-constrained, thermally sensitive, and safety-compliant industrial control designs.
Availability
TLP2391(TPL,E is available at Aetrix Electronics and suitable for programmable logic controllers, industrial inverters, and high-speed instrumentation requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.
Supply support for TLP2391(TPL,E 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 discrete semiconductors, power devices, and optoelectronics for industrial, automotive, and consumer applications.
The TLP2391 belongs to Toshiba's high-speed logic-output photocoupler product line, engineered specifically for noise-immune digital signal isolation in harsh electromagnetic environments such as factory automation and motor control systems.
FAQ
What is the isolation voltage rating of the TLP2391(TPL,E?
The TLP2391(TPL,E has a minimum isolation voltage rating of 3750 Vrms (AC, 60 seconds, RH ≤ 60%). This value is verified per UL 1577 and EN IEC 60747-5-5 standards (with V4 option), supporting reinforced insulation in industrial equipment meeting IEC 61800-5-1 requirements. The TLP2391(TPL,E achieves this via internal molding compound and precise creepage/clearance distances of ≥5.0 mm.
Does the TLP2391(TPL,E support bidirectional input signals?
Yes - the TLP2391(TPL,E integrates two infrared LEDs connected in reverse-parallel between pins 1 and 3. This allows it to respond identically to both sourcing and sinking input configurations without external diodes or polarity selection circuitry. The TLP2391(TPL,E thus simplifies PLC I/O module design by eliminating wiring dependency on field device output type.
What is the recommended bypass capacitor for the TLP2391(TPL,E?
A 0.1 µF ceramic capacitor must be placed between pin 6 (VCC) and pin 4 (GND) of the TLP2391(TPL,E, located within 1 cm of the pins. This decoupling capacitor stabilizes the internal high-gain amplifier and prevents oscillation or improper switching - especially critical at high data rates. The TLP2391(TPL,E will not meet its specified 10 Mbps performance without this capacitor.
What safety certifications does the TLP2391(TPL,E hold?
The TLP2391(TPL,E is UL-recognized (UL 1577, File No. E67349), cUL-recognized (CSA 5A File No. E67349), and VDE-approved per EN IEC 60747-5-5 when ordered with the V4 option (e.g., TLP2391(V4-TPL,E). The base TLP2391(TPL,E meets UL/cUL requirements out-of-box; VDE compliance requires explicit V4 ordering. The TLP2391(TPL,E also complies with RoHS Directive 2011/65/EU (indicated by "E" suffix).
How does the TLP2391(TPL,E achieve high common-mode transient immunity?
The TLP2391(TPL,E incorporates an internal Faraday shield between its LED and photodetector die, which blocks capacitive coupling of fast transients across the isolation barrier. This design guarantees ±20 kV/µs common-mode transient immunity - measured per IEC 60747-5-5 - enabling reliable operation in proximity to IGBTs, contactors, and variable-frequency drives. The TLP2391(TPL,E maintains this specification across its full -40°C to +125°C operating range.
TLP2391(TPL,E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- 6-SOIC (0.179", 4.55mm Width), 5 Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Channels:
- 1
- Inputs - Side 1/Side 2:
- 1/0
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 20kV/µs
- Input Type:
- AC, DC
- Output Type:
- Push-Pull, Totem Pole
- Current - Output / Channel:
- 10 mA
- Data Rate:
- 10MBd
- Propagation Delay tpLH / tpHL (Max):
- 100ns, 100ns
- Rise / Fall Time (Typ):
- 3ns, 3ns
- Voltage - Forward (Vf) (Typ):
- 1.55V
- Current - DC Forward (If) (Max):
- 10mA
- Voltage - Supply:
- 2.7V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SO, 5 Lead
TLP2391(TPL,E FAQ
1.How can I place an order for TLP2391(TPL,E through Aetrix?
Please submit a Request for Quotation (RFQ) for TLP2391(TPL,E 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 TLP2391(TPL,E reliable?
The price and inventory of TLP2391(TPL,E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLP2391(TPL,E is usually 5 days.
3.What payment methods are accepted for TLP2391(TPL,E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLP2391(TPL,E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLP2391(TPL,E?
TLP2391(TPL,E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLP2391(TPL,E 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 TLP2391(TPL,E?
For technical support, including TLP2391(TPL,E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLP2391(TPL,E requirements.
6.How does Aetrix verify that TLP2391(TPL,E is sourced from the original manufacturer or authorized distributors?
All TLP2391(TPL,E 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 TLP2391(TPL,E meets industry standards.
7.What is the process for return or replacement of TLP2391(TPL,E?
All TLP2391(TPL,E units undergo pre-shipment inspection (PSI). If there is an issue with TLP2391(TPL,E, 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 TLP2391(TPL,E part is unused and in its original packaging.
Return procedure for TLP2391(TPL,E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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