Description
The MCT52XX series consists of a high-efficiency AlGaAs, infrared emitting diode, coupled with an NPN phototransistor in a six pin dual-in-line package.
The MCT52XX is well suited for CMOS to LSTT/TTL interfaces, offering 250% CTRCE(SAT) with 1 mA of LED input current. When an LED input current of 1.6 mA is supplied data rates to 20K bits/s are possible.
The MCT52XX can easily interface LSTTL to LSTTL/TTL, and with use of an external base to emitter resistor data rates of 100K bits/s can be achieved.

Features
• High CTRCE(SAT) comparable to Darlingtons
• CTR guaranteed 0°C to 70°C
• High common mode transient rejection 5kV/µs
• Data rates up to 150 kbits/s (NRZ)
• Underwriters Laboratory (UL) recognized (file #E90700)
• VDE recognized (file #94766)
   – Add option 300 (e.g., MCT5211.300)

Applications
• CMOS to CMOS/LSTTL logic isolation
• LSTTL to CMOS/LSTTL logic isolation
• RS-232 line receiver
• Telephone ring detector
• AC line voltage sensing
• Switching power supply