1458 Optocoupler Datasheet _best_ – Full HD

Here is the technical content for a . Since "1458" is not a standard industry part number for an optocoupler (it is typically associated with the dual operational amplifier), this datasheet assumes the 1458 refers to a general-purpose phototransistor optocoupler (similar to a 4N35 or PC817 but with a unique in-house marking). For actual use, please verify the manufacturer (e.g., Siemens, Vishay, or a Chinese brand).

: Used for signal switching and motor control.

, allowing flexibility for both legacy 5V systems and modern 3.3V logic. Low Input Drive: Designed with a "Low cap I sub cap F 1458 optocoupler datasheet

Capable of operating effectively within a low supply voltage and low input forward current ( IFcap I sub cap F ) range, maximizing power efficiency. Wide Supply Voltage ( VCCcap V sub cap C cap C end-sub

Because the output is an open collector, an external pull-up resistor ( RLcap R sub cap L ) is required. Lower resistor values (e.g., 470 Ωcap omega Here is the technical content for a

For a traditional phototransistor output, CTR is a key indicator of efficiency. However, for the HCPL-1458 high-speed series, which often has a logic gate output, this is sometimes less relevant than its speed characteristics.

| Part Number | Package | Qty per Reel | Lead‑Free (Y/N) | |-------------|---------|--------------|-----------------| | 1458‑A | DIP‑4 | 500 | Y | | 1458‑B | DIP‑4 | 1000 | Y | : Used for signal switching and motor control

A CTR < 100% means the optocoupler cannot drive an output current larger than the input current. For a microcontroller with I_F = 5mA, the maximum available I_C is at least 5mA (100% CTR).

Assume a mistaken desire to use a "1458 optocoupler" – instead, we select the .