). Pin 5 goes to the industrial system ground. The output from Pin 6 can safely drive the gate of a power MOSFET or a Darlington transistor to toggle the actuator. Isolated RS-485/Modbus Data Communication
: Unlike standard phototransistors, the A1458 uses an integrated photodetector and output transistor with separate connections for the photodiode bias and collector. This design reduces base-collector capacitance, allowing for speeds up to 100 times faster than conventional couplers.
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit | |-----------|--------|-------------|-----|-----|-----|------| | Forward Voltage | V_F | I_F = 20 mA | 1.2 | 1.4 | 1.6 | V | | Reverse Leakage | I_R | V_R = 6 V | - | - | 10 | μA | | Capacitance | C_in | V=0V, f=1MHz | - | 30 | - | pF |
This article provides a comprehensive overview of the HCPL-A1458, drawing from key datasheet information, exploring its technical features, pinout, and typical applications, designed for design engineers and electronics technicians. 1. What is the HCPL-A1458 Optocoupler? a1458 optocoupler datasheet
Have you used the A1458 in a project? Share your experience or ask a question in the comments below. For more component deep dives, subscribe to our newsletter.
Protects sensitive MCUs from voltage spikes and noise while communicating with external hardware. Packaging Information
) is a high-speed, single-channel optocoupler designed for isolation in high-performance switching applications. It is typically manufactured by Broadcom (formerly Avago Technologies). Absolute Maximum Ratings Motor drive inverters
, which allows the device to maintain signal integrity even in environments with severe electromagnetic interference. Supply Voltage ( cap V sub cap C cap C end-sub : Operates between 4.5 V and 5.5 V , compatible with standard TTL and CMOS logic levels. Output Type Open Collector
An analytical breakdown of the technical specifications, pinout architecture, and circuit implementations found within the official guides engineers in optimizing its usage. Technical Specifications and Core Features
) flows through the input LED, it emits infrared light. This light travels across an optically transparent but electrically isolating barrier to hit the photodetector. The detector amplifies this signal and switches the output state at Pin 6 (and Pin 7 if dual-channel), mirroring the input logic without any physical electrical contact. 3. Absolute Maximum Ratings renewable energy systems (solar/wind inverters)
Motor drive inverters, renewable energy systems (solar/wind inverters), and factory automation. Digital Isolation:
From its versatile PDIP-8 and SOIC-8W packaging to its critical role in IGBT driver circuits and switch-mode power supplies, the A1458 family provides the reliability and speed needed for modern industrial and commercial electronics. When searching for an "A1458 optocoupler datasheet," remember to specify the full part number to find the correct component and differentiate it from other parts with the same numeric code.