Because the 1458 contains two independent channels in an 8-pin footprint, Channel 1 can be used for the Transmit (TX) line, while Channel 2 handles the Receive (RX) line. This achieves full-duplex isolated serial communication using a single IC chip, saving massive board space. 6. Layout and PCB Design Guidelines
Top View (Notch facing left or up) ---- Notch ---- | 1 o o 6 | | 2 o o 5 | | 3 o o 4 | ------------ 1458 optocoupler datasheet
Collector terminal of the Channel 1 phototransistor. Because the 1458 contains two independent channels in
The 1458 optocoupler is widely used in a variety of applications where high voltage insulation and efficient signal transfer are required. Some of the common applications include: Layout and PCB Design Guidelines Top View (Notch
The 4N35 works, but only if I_F is properly chosen. The non-existent "1458 optocoupler" would require the same analysis.
These parameters represent the predictable performance metrics of the 1458 optocoupler under specific operational windows. Input Characteristics Typical 1.25 V, Maximum 1.65 V ( Reverse Current ( IRcap I sub cap R ): Typical 0.1 µA, Maximum 10 µA ( Junction Capacitance ( CJcap C sub cap J ): Typical 25 pF ( Output Characteristics Collector-Emitter Dark Current ( ICEOcap I sub cap C cap E cap O end-sub ): Typical 1.0 nA, Maximum 100 nA ( Collector-Emitter Breakdown Voltage ( BVCEOcap B cap V sub cap C cap E cap O end-sub ): Minimum 50 V ( Emitter-Collector Breakdown Voltage ( BVECOcap B cap V sub cap E cap C cap O end-sub ): Minimum 7.0 V ( Transfer Characteristics
Designed for high-speed switching, providing efficient signal transfer in digital applications.
