1458 Optocoupler Datasheet Hot! Jun 2026

(Voltage Output High): The minimum voltage measured at the output when the component is in a logic "HIGH" state. 4. Isolation Voltage ( VISOcap V sub cap I cap S cap O end-sub

The photons strike the base area of the internal phototransistor. This generates electron-hole pairs in the semiconductor material, producing a base current.

To use the HCPL-1458 as a basic logic isolator, you will generally:

R1=VCC−VFIF=5V−1.2V0.010A=380 Ωcap R sub 1 equals the fraction with numerator cap V sub cap C cap C end-sub minus cap V sub cap F and denominator cap I sub cap F end-fraction equals the fraction with numerator 5 V minus 1.2 V and denominator 0.010 A end-fraction equals 380 space cap omega Using a standard, readily available resistor value, a is ideal. Circuit 2: Modifying Switching Speed using Pin 6 (Base) 1458 optocoupler datasheet

supply range and features a very low threshold input current. This makes it an ideal choice for interfacing logic families (like TTL and CMOS), isolating analog signals, and protecting microprocessors from high-voltage spikes. Key Features

Maintain adequate air separation between components on either side of the isolation plane to prevent high-voltage arcing.

: Optimized for high-speed and low-voltage operations. Voltage Supply ( VCCcap V sub cap C cap C end-sub (Voltage Output High): The minimum voltage measured at

These parameters represent the predictable performance metrics of the 1458 optocoupler under specific operational windows. Input Characteristics Typical 1.25 V, Maximum 1.65 V ( Reverse Current ( IRcap I sub cap R ): Typical 0.1 µA, Maximum 10 µA ( Junction Capacitance ( CJcap C sub cap J ): Typical 25 pF ( Output Characteristics Collector-Emitter Dark Current ( ICEOcap I sub cap C cap E cap O end-sub ): Typical 1.0 nA, Maximum 100 nA ( Collector-Emitter Breakdown Voltage ( BVCEOcap B cap V sub cap C cap E cap O end-sub ): Minimum 50 V ( Emitter-Collector Breakdown Voltage ( BVECOcap B cap V sub cap E cap C cap O end-sub ): Minimum 7.0 V ( Transfer Characteristics

Designed for high-speed operation with typical propagation delays as low as 8 ns to 35 ns . Voltage Range: Operates within a flexible VCCcap V sub cap C cap C end-sub

The schematic guidelines below demonstrate how to use the 1458 optocoupler to safely drive a 24V industrial relay using a 5V microcontroller pin. This makes it an ideal choice for interfacing

). The integrated shielding in the Broadcom photodetector ensures standard-setting . It effectively blocks common-mode noise from corrupting data lines. Typical Applications & Implementation Circuits

If you need to narrow down your design specifications, tell me: The (e.g., ILD1458, MOC series) if known.