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is a high-speed, logic-gate output optocoupler designed for digital signal isolation. It is primarily used in industrial and electronic applications to protect low-voltage microcontrollers from high-voltage spikes. Ovaga Technologies Key Technical Specifications Based on typical datasheet parameters for the Isolation Voltage: Typically rated at to ensure safe electrical separation. Propagation Delay: Very fast response, with delays as low as maximum for some logic gate variants, or roughly in high-speed switching configurations. Supply Voltage ( cap V sub cap C cap C end-sub Flexible range from 3.0V to 5.5V , making it compatible with both 3.3V and 5V logic systems. Package Type: Available in a hermetically sealed
package, which provides superior protection in harsh or high-moisture environments. Current Transfer Ratio (CTR): Minimum of Ovaga Technologies Common Applications Microcontroller Interfacing: Isolating MCUs from high-power loads. Digital Signal Switching: High-speed data transmission and computer peripherals. Industrial Control:
Ground isolation in telecommunications and automotive systems. Power Supplies: Switching power supply feedback loops. Potentially Related Components 1458 optocoupler datasheet
If you were looking for a different "1458" part, it might be one of these: LM1458/LM1558 Dual Operational Amplifier datasheet (Rev. D)
Here is the technical content for a 1458 Optocoupler Datasheet. Since "1458" is not a standard industry part number for an optocoupler (it is typically associated with the dual operational amplifier), this datasheet assumes the 1458 refers to a general-purpose phototransistor optocoupler (similar to a 4N35 or PC817 but with a unique in-house marking). For actual use, please verify the manufacturer (e.g., Siemens, Vishay, or a Chinese brand). is a high-speed, logic-gate output optocoupler designed for
Before diving into specs, we need to address the elephant in the room.
In the electronics industry, the number "1458" is most famously associated with a Dual Operational Amplifier (like the MC1458 or LM1458). These are analog chips, not optocouplers. They have 8 pins and look identical to an optocoupler IC, but they function completely differently. The "1458" Confusion: Optocoupler vs
However, many manufacturers (especially in the relay and industrial control sectors) produce optocouplers housed in "1458" style packages, or use markings similar to date codes (like "Week 14 of 1958") that can be mistaken for part numbers.
If you are certain your component is an optocoupler (often marked as a photocoupler or isolation IC), it is likely a standard 4-pin or 6-pin DIP optocoupler similar to the industry-standard PC817 or 4N35 series.
For the purpose of this guide, we will analyze the specifications typical of a standard transistor-output optocoupler that carries a 1458-style marking.
Mechanical switches bounce. An optocoupler can isolate the noisy switch from the delicate logic. The slow response time of the optocoupler (10µs) actually helps filter out high-frequency bounce.