DESCRIPTION
These diode-transistor optocouplers use an insulating layer between a LED and an integrated photodetector to provide electrical insulation between input and output. Separate connections for the photodiode bias and output-transistor collector increase the speed up to a hundred times that of a conventional phototransistor coupler by reducing the base-collector capacitance. These single channel optocouplers are available in 8-pin DIP, SO-8, and Widebody package configurations. Current transfer ratio (CTR) for these devices is 7% minimum at IF = 16 mA. A standard 16-mA TTL sink current through the input LED will provide enough output current for 1 TTL load and a 5.6 k pull-up resisto
Broadcom
