The 1458 optocoupler is a dual-channel device that consists of two LEDs and two phototransistors, packaged in a 8-pin DIP (Dual In-line Package) or SOP (Small Outline Package). Its primary function is to transfer signals between two electrically isolated circuits while providing protection against high voltage spikes, noise, and other forms of electrical interference.
Industrial surroundings generate severe electromagnetic interference (EMI) and fast-switching voltage transients ( 1458 optocoupler datasheet
Propagation delay measures how fast the optocoupler responds to a change in the input signal. For high-speed logic or communication lines, these metrics (measured in nanoseconds) are crucial to ensure your system timing is not compromised. Pinout and Circuit Configuration The 1458 optocoupler is a dual-channel device that
Unlike basic four-pin optocouplers like the PC817, which output to a raw phototransistor, the HCPL-1458 features a with a TTL-compatible open-collector output. Core Architectural Features: For high-speed logic or communication lines, these metrics
Standard Dual-Channel (DIP-8) Pinout +---_---+ Anode 1 | 1 8 | Collector 2 Cathode 1 | 2 7 | Emitter 2 Anode 2 | 3 6 | Collector 1 Cathode 2 | 4 5 | Emitter 1 +-------+ Pin Descriptions