| Parameter | Symbol | Conditions | Min | Typ | Max | Unit | | :--- | :---: | :--- | :---: | :---: | :---: | :---: | | | | | | | | | | Forward Voltage | $V_F$ | $I_F = 20 \text mA$ | - | 1.2 | 1.4 | V | | Reverse Current | $I_R$ | $V_R = 4 \text V$ | - | - | 10 | $\mu A$ | | Output | | | | | | | | Collector Dark Current | $I_CEO$ | $V_CE = 20 \text V$ | - | - | 100 | nA | | Transfer Characteristics | | | | | | | | Current Transfer Ratio | CTR | $I_F = 5 \text mA, V_CE=5\textV$ | 50* | - | - | % | | Saturation Voltage | $V_CE(sat)$ | $I_F = 20 \text mA, I_C=1\textmA$ | - | 0.1 | 0.2 | V | | Switching Times | | | | | | | | Rise Time | $t_r$ | $V_CC=5\textV, I_C=2\textmA$ | - | 4 | 18 | $\mu s$ | | Fall Time | $t_f$ | $R_L=100 \Omega$ | - | 3 | 18 | $\mu s$ |
The details a high-performance, hermetically sealed Broadcom/Avago Technologies optical isolator optimized for low-voltage, high-speed applications. Designed to bridge the gap between high-power electrical circuits and sensitive logic-level microcontrollers, this integrated circuit ensures signal integrity while providing massive common-mode noise suppression. This comprehensive technical guide breaks down everything found in its datasheet, from pinout configurations to engineering implementation. Key Technical Specifications
To safely drive the internal LED from a 5V microcontroller GPIO pin with a target IFcap I sub cap F 1458 optocoupler datasheet
The specifications below pertain to the PC1458 Optocoupler . If the user possesses a component labeled strictly "1458" without the "PC" prefix, it is likely an Op-Amp, and an optocoupler datasheet will not apply.
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 | Parameter | Symbol | Conditions | Min
: High-speed digital signal switching and line receivers.
: Commonly available in a compact SOP-8 or SOIC package style. Pin Configuration (Standard SOP-8) While pinouts can vary by manufacturer, the typically follows this configuration: Input Pins : Dedicated to the LED power supply and ground. Key Technical Specifications To safely drive the internal
Keep in mind that the specific details may vary depending on the manufacturer and the particular variant of the 1458 optocoupler. Always consult the datasheet from the manufacturer you're using for the most accurate information.
" feature, meaning it requires minimal current from a microcontroller's GPIO to trigger. Common Mode Rejection (CMR):