LTV8141S-TA1 Lite-On Integrated Circuit (Small Outline Packages) In Stock
Lite-On LTV8141S-TA1 is a surface mount AC input Darlington output optocoupler in a compact DIP-4 package, offering 5000V isolation voltage and 600% current transfer ratio for reliable galvanic isolation of AC signals. With a 35V collector-emitter breakdown voltage and 50 mA forward current rating, it suits AC mains detection, zero-crossing circuits, and industrial input isolation applications. UL and VDE approved; available from authorized distributors worldwide with fast shipping.
- Manufacturer
- Lite-On
- Package
- Small Outline Packages
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- LTV8141S-TA1 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -30.0°C to 100.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 5000V isolation voltage delivers robust galvanic separation between AC input and logic output circuits in industrial controls and home appliance boards
- 600% current transfer ratio (CTR) with Darlington output provides high sensitivity and strong output drive for direct microcontroller or relay interface
- Native AC input capability eliminates the need for external bridge rectification in zero-crossing detection and AC signal coupling designs
- UL and VDE approved construction meets safety requirements for use in industrial automation, smart metering, and safety-critical home appliance applications
Applications
The LTV8141S-TA1 is designed for AC mains zero-crossing detection, galvanic isolation of industrial AC sensor inputs, and appliance control boards requiring up to 5000V isolation between the AC line and low-voltage logic circuits. Its Darlington output with 600% CTR delivers sufficient current gain to drive microcontroller inputs and relay stages directly from low-level AC trigger signals without additional amplification. Engineers deploy it in smart meters, home appliance control boards, industrial PLC input modules, and power monitoring equipment where high-voltage isolation and AC signal detection are critical.
Specifications
| Reach Compliance Code | Unknown |
| Additional Feature | UL APPROVED, VDE APPROVED |
| Coll-Emtr Bkdn Voltage-Min | 35V |
| Configuration | SINGLE |
| Current Transfer Ratio-Nom | 600% |
| Dark Current-Max | 1nA |
| Forward Current-Max | 0.05A |
| Isolation Voltage-Max | 5000V |
| Number of Elements | 1 |
| Optoelectronic Device Type | AC INPUT-DARLINGTON OUTPUT OPTOCOUPLER |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LTV8141S-TA1:
suggested
suggested
Frequently Asked Questions
What isolation voltage and current transfer ratio does the LTV8141S-TA1 optocoupler provide?
The LTV8141S-TA1 provides a maximum isolation voltage of 5000V between its AC input and Darlington output, along with a nominal current transfer ratio of 600%. The Darlington output stage achieves this high CTR at forward currents up to 50 mA, enabling robust output switching from low-level AC input signals without requiring additional amplification in the control circuit.
For which AC input isolation and detection applications is the LTV8141S-TA1 best suited?
The LTV8141S-TA1 is best suited for AC mains zero-crossing detection, industrial AC signal isolation, and home appliance input boards where up to 5000V galvanic isolation protects low-voltage logic from the AC supply. Its Darlington output with 600% CTR drives microcontroller GPIO or relay coil inputs directly, making it ideal for power monitoring, smart metering, and industrial PLC digital input isolation modules.
How does the LTV8141S-TA1 AC input design simplify zero-crossing detection compared to DC-input optocouplers?
The LTV8141S-TA1 AC input LED conducts on both positive and negative half-cycles of the AC waveform, eliminating the need for an external bridge rectifier and reducing board component count in zero-crossing detection circuits. This makes it practical for detecting both 50 Hz and 60 Hz line frequency crossings, while the 35V collector-emitter breakdown voltage on the Darlington output provides adequate protection for standard logic supply rails.
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