OLH449 Overview
The OLx449 is designed for low input current applications that require optical isolation with a high CTR and low saturation VCE. Each optocoupler Figure 1. Block Diagram consists of an LED and NPN silicon phototransistor that is electrically isolated, but optically coupled inside a hermetic (LCC, FP, TO-5) or non-hermetic (Glob Top) package.
OLH449 Key Features
- High voltage electrical isolation
- High CTR assured over -55° to +125 °C
- Low input current: 1 mA
- parable to OLx249 family, but featuring
- CMOS to LSTTL or TTL patibility
- Various packages available to fit application
- Small footprint, hermetic packages (LCC, FP, TO-5)
- Cost-effective package (Glob Top SMT)
- Radiation-tolerant version of 4N49U
- High-reliability screening available