| Feature | Description / Typical Value | Key Benefit | | :--- | :--- | :--- | | | Data rates up to 15 Mbit/s; typical t PHL /t PLH propagation delays are often as low as 8 ns . | Enables fast and reliable digital communication, suitable for high-speed data transmission. | | High Isolation Voltage | Ranges from 3,750 V rms up to 5,300 V rms , providing robust galvanic isolation. | Protects low-voltage control circuitry from high-voltage hazards and transients. | | TTL Compatibility | Logic output is fully compatible with Transistor-Transistor Logic (TTL) levels. | Allows for direct interfacing with standard digital logic families without extra level-shifting components. | | High Current Transfer Ratio (CTR) | For the HCPL-1458-500E , the CTR is > 500% at an input current (I F ) of 5 mA. | A high CTR means the output can be driven strongly with a very small input current, improving efficiency. | | High Common-Mode Transient Immunity (CMTI) | Minimum of 15 kV/µs for basic models; advanced models achieve up to 75 kV/µs . | Provides excellent immunity to electrical noise, ensuring stable performance in harsh industrial environments. | | Wide Operating Temperature | Typically from -40°C to +100°C , with some variants extending to -55°C to +100°C. | Guarantees reliable operation in demanding applications ranging from automotive to industrial. | | Dual-Channel Option | Some variants, like the HCNW1458, integrate two independent optocoupler channels in a single package. | Saves valuable board space and reduces component count for more compact designs. |
Modern, automotive-qualified Broadcom alternative offering high CMTI performance and modern energy efficiency profiles.
Allows for operation with very low input currents. Wide VCCcap V sub cap C cap C end-sub
If you were looking for a different "1458" part, it might be one of these: LM1458/LM1558 Dual Operational Amplifier datasheet (Rev. D)
Top View (Notch facing left or up) ---- Notch ---- | 1 o o 6 | | 2 o o 5 | | 3 o o 4 | ------------ 1458 optocoupler datasheet
or 8-pin widebody package, ensuring long-term reliability in harsh environments. Isolation:
): -0.5 V to 15 V or 30 V (Check specific manufacturer suffix) -0.5 V to VCCcap V sub cap C cap C end-sub 4. Electrical Characteristics
Minimize the trace length between the bypass capacitor and the VCCcap V sub cap C cap C end-sub GNDcap G cap N cap D pins of the optocoupler to ensure maximum noise immunity.
Connect a current-limiting resistor to the (Pin 1) to set the correct input current from your microcontroller. Connect the Cathode (Pin 2) to your input ground. Connect VCCcap V sub cap C cap C end-sub | Feature | Description / Typical Value |
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
The 1458 optocoupler, also known as the PC817 or 817 optocoupler, is a popular optoelectronic device used for electrical isolation and signal transfer between two circuits. This report provides an in-depth analysis of the 1458 optocoupler datasheet, highlighting its key features, specifications, and applications.
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The first page tells you the physical format. Look for: | | High Current Transfer Ratio (CTR) |
TTL-compatible open-collector output, allowing for direct interfacing with various logic families. Package Type: Typically available in a hermetically sealed
Commonly found in DIP-8, DIP-16, or SOP-8 packages, sometimes with hermetic sealing for military or aerospace use.
The is an incredibly robust, high-performance logic-gate optocoupler designed for environments that demand both excellent data integrity and strict electrical isolation. By thoroughly reviewing the HCPL-1458 datasheet , you can confidently integrate this component into your next high-voltage design, communication system, or industrial control project.
A photosensitive integrated photodetector (often a phototransistor or logic gate) that detects the light and converts it back into an electrical signal.