1458 Optocoupler Datasheet Jun 2026

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| Parameter | Symbol | Value (Typical) | Unit | |-----------|--------|----------------|------| | Rise Time | t_r | 2 | µs | | Fall Time | t_f | 2 | µs | | Turn-on Time | t_on | 3 | µs | | Turn-off Time | t_off | 3 | µs |

The 1458 optocoupler datasheet provides a detailed list of specifications that define the device's performance and characteristics. Some of the key specifications include:

This refers to the power required for the output detector circuit (the photodiode and the amplifier). The HCPL-1458 is known for its wide supply range, making it highly versatile for systems running on both standard 5V logic and higher voltage rails. 3. Output Logic Levels ( VOLcap V sub cap O cap L end-sub VOHcap V sub cap O cap H end-sub VOLcap V sub cap O cap L end-sub 1458 optocoupler datasheet

The HCPL-1458 is characterized by its high common-mode rejection and speed, making it suitable for demanding industrial environments. Typical Value Description Maximum signal transmission speed Propagation Delay 4 µs (typical) Signal delay time from input to output Isolation Voltage 3750 Vrms to 5300 Vrms Maximum rated isolation Operating Voltage (Vcc) 4.5 V to 5.5 V Standard logic-level supply voltage Operating Temperature -40°C to +85°C Range for industrial applications Current Transfer Ratio 60% (minimum) Ratio of output current to input current Pinout Configuration

A common use case for the 1458 optocoupler is isolating a 3.3V or 5V MCU from a noisy industrial subsystem (like a 12V or 24V relay control matrix).

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If you are working with industrial controls, logic ground isolation, or high-noise environments, the is a standout component. Originally developed by Hewlett-Packard (and subsequently produced by Avago Technologies and Broadcom), this high-gain optocoupler offers exceptional performance.

+24V Sensor Signal | [R_in] | +---+ (Pin 1) |-->| Input LED +---+ (Pin 2) | GND (24V System Ground) --------------------------------------- [Isolation Barrier] V_CC (+5V MCU Power) | [R_pullup] | +-----> To MCU GPIO Pin | +---+ (Pin 6) | / | Phototransistor |< | +---+ (Pin 5) | GND (MCU System Ground) Input Resistor ( Rincap R sub i n end-sub ): To target a safe driving current of from a 24V source:

range of , allowing compatibility with both legacy 5V and modern 3.3V logic systems. Can’t copy the link right now

Because the HCPL-1458 series is from a specific manufacturer, finding a "drop-in" replacement can be challenging. However, you can find equivalent components by looking for optocouplers from other reputable brands (like , Toshiba , or ON Semiconductor ) that share the same key specifications.

A higher CTR ensures that a low-power control signal can effectively drive the output transistor into saturation. Switching Speeds 0.2 Propagation Delay Time to Low Output ( tPHLt sub cap P cap H cap L end-sub ): 0.2