A1458 Optocoupler Datasheet

Many A1458 variants carry UL 1577, VDE 0884 (reinforced insulation), and CSA approvals. Always check the specific datasheet for regulatory marks if your design requires safety certification.

Compare the A1458 with another optocoupler you are considering.

Eradicates ground loop noise in sensitive audio, data transmission, and medical monitoring systems. Design Example: Interfacing a 5V MCU to a 24V Load

Ensure the input driver (MCU or transistor) can provide enough current for the LED to reliably switch the output. 6. Conclusion

Assuming a 5V microcontroller output and a desired forward current ( IFcap I sub cap F ) of 15 mA: a1458 optocoupler datasheet

On each half-cycle, LED illuminates, output toggles. A capacitor at the output (e.g., 10 μF) with a pull-up resistor creates a logic low when AC is present.

This section clarifies the specific part numbers and their package variants, such as (PDIP-8) or HCPL-1458-500E (SOIC-8W). The "000E" suffix often denotes the PDIP package with lead-free (RoHS) compliance, while "500E" indicates the SOIC-8W surface-mount package.

By converting the electrical signal to light and back again, the A1458 ensures that there is no physical connection between the input and output. This prevents "ground loops" and protects low-voltage microcontrollers (like an Arduino or STM32) from high-voltage transients. Key Specifications (Datasheet Summary)

Always consult the official manufacturer's datasheet from Broadcom (formerly Avago Technologies) for the most up-to-date and detailed specifications, including absolute maximum ratings, thermal characteristics, and detailed application notes. Understanding the intricacies of this datasheet will allow you to fully leverage the A1458's capabilities to create safer, more resilient, and high-performance electronic systems. Many A1458 variants carry UL 1577, VDE 0884

The A1458 offers significant isolation, typically holding up to

Because of its high speed and robust isolation capabilities, the HCPL-A1458 is widely used in:

This comprehensive guide serves as an expanded, highly detailed datasheet overview for the A1458 optocoupler, covering its pin configuration, technical specifications, internal architecture, and practical application circuits. Understanding the A1458 Optocoupler

Formula: RIN=VLOGIC−VFIFFormula: cap R sub cap I cap N end-sub equals the fraction with numerator cap V sub cap L cap O cap G cap I cap C end-sub minus cap V sub cap F and denominator cap I sub cap F end-fraction 7. Conclusion Eradicates ground loop noise in sensitive audio, data

Before diving into electrical characteristics, let us establish the pinout. The A1458 is typically housed in a 4-pin DIP (Dual Inline Package). The usually presents the following pin assignments (viewed from top):

The official datasheet provides the "Absolute Maximum Ratings" and "Recommended Operating Conditions." The following are the key specifications collated for the A1458 (HCPL-A1458/HCPL-1458 series):

Protecting communication lines (e.g., CAN, RS-485) in factory automation.

In the world of electronics, isolation is paramount. Whether you are designing a switch-mode power supply (SMPS), a microcontroller interface for industrial machinery, or a safety system for a medical device, the optocoupler (also known as an opto-isolator) is a critical component. Among the myriad of options available, the has gained recognition for its balance of speed, current transfer ratio (CTR), and isolation voltage.