A1458 Optocoupler Datasheet Patched Today

Offers robust voltage isolation between the input and output stages (typically rated up to 2,500V RMS or higher depending on the specific package variant).

Used in programmable logic controllers (PLCs), sensor interfaces, and robotic systems where high-speed, noise-free logic isolation is crucial.

Above 25°C, derate total power by approximately 2.5 mW/°C. At 100°C, P_tot drops to ~150 mW. a1458 optocoupler datasheet

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| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit | |--------------------------|--------|-------------------------|-----|-----|-----|-------| | LED forward voltage | VF | IF = 20 mA | 1.1 | 1.2 | 1.4 | V | | LED reverse current | IR | VR = 6 V | - | - | 10 | µA | | Collector dark current | ICEO | VCE = 20 V, IF = 0 | - | - | 100 | nA | | Current transfer ratio | CTR | IF = 5 mA, VCE = 5V | 50 | 300 | 600 | % | | Collector-emitter sat. | VCE(sat)| IF = 10 mA, IC = 2 mA | - | 0.2 | 0.4 | V | | Isolation resistance | RISO | VIO = 500 Vdc | 10¹¹| - | - | Ω | | Capacitance (input-output)| CIO | f = 1 MHz | - | 1.0 | - | pF | Offers robust voltage isolation between the input and

, making it exceptionally resilient against rapid voltage changes. 5. Typical Application Circuits

A standard application circuit for digital signal transmission includes: At 100°C, P_tot drops to ~150 mW

: It features an Open Collector output that is TTL-compatible , making it easy to interface directly with microcontrollers and logic gates. Common Applications : Motor Drives : Controlling speed and torque in AC motors.

: Approximately 35–45 ns (typical), with a maximum of 8 ns for some high-speed variants .

Available in 8-pin DIP (Dual In-line Package) and SOP-8 (Small Outline Package), often with wide-body options for increased creepage and clearance. 3. Pinout Configuration and Functional Description