Overview
The HCPL2531SDM is a high-speed, dual-channel optocoupler produced by onsemi. It consists of an AlGaAs LED optically coupled to a high-speed photodetector transistor for each channel. This design includes a separate connection for the bias of the photodiode, significantly enhancing the speed over conventional phototransistor optocouplers by reducing the base-collector capacitance of the input transistor. The device features superior common mode rejection and is designed for high reliability and performance in various applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature | -40 to +100 | °C |
| Storage Temperature | -40 to +125 | °C |
| Supply Voltage (VCC) | 4.5 to 20.0 | V |
| Input Forward Current (IF) | 25 mA (avg), 50 mA (peak) | mA |
| Output Current (IO) | 8 mA (avg), 16 mA (peak) | mA |
| Current Transfer Ratio (CTR) | 19 to 50 % | % |
| Propagation Delay Time (tPHL) | 1.0 to 2.0 μs | μs |
| Common Mode Transient Immunity | 10,000 to 50,000 V/μs | V/μs |
| Withstand Isolation Test Voltage | 5,000 VACRMS for 1 minute | VACRMS |
Key Features
- High Speed – Up to 1 MBit/s data rate
- Dual-Channel Configuration
- CTR Guaranteed from 0°C to 70°C
- No Base Connection for Improved Noise Immunity (in some models)
- Superior Common Mode Rejection (CMR) of up to 50,000 V/μs
- Safety and Regulatory Approvals: UL1577, DIN EN/IEC60747-5-5
- Pb-Free Devices
Applications
- Line Receivers
- Pulse Transformer Replacement
- Output Interface to CMOS-LSTTL-TTL
- Wide-Bandwidth Analog Coupling
Q & A
- What is the operating temperature range of the HCPL2531SDM?
The operating temperature range is -40°C to +100°C.
- What is the maximum input forward current for the HCPL2531SDM?
The maximum input forward current is 25 mA (average) and 50 mA (peak).
- What is the current transfer ratio (CTR) of the HCPL2531SDM?
The CTR is guaranteed between 19% and 50% from 0°C to 70°C.
- What is the common mode transient immunity of the HCPL2531SDM?
The common mode transient immunity is up to 50,000 V/μs.
- What are the safety and regulatory approvals for the HCPL2531SDM?
The device is approved by UL1577 and complies with DIN EN/IEC60747-5-5.
- What is the maximum withstand isolation test voltage for the HCPL2531SDM?
The device can withstand 5,000 VACRMS for 1 minute.
- What are some typical applications of the HCPL2531SDM?
Typical applications include line receivers, pulse transformer replacement, output interface to CMOS-LSTTL-TTL, and wide-bandwidth analog coupling.
- Is the HCPL2531SDM a Pb-Free device?
- What is the data rate capability of the HCPL2531SDM?
The device supports data rates up to 1 MBit/s.
- How many channels does the HCPL2531SDM have?
The HCPL2531SDM is a dual-channel optocoupler.
