1458 Optocoupler Datasheet Site

| Parameter | Symbol | Conditions | Min | Typ | Max | Unit | | :--- | :---: | :--- | :---: | :---: | :---: | :---: | | | | | | | | | | Forward Voltage | $V_F$ | $I_F = 20 \text mA$ | - | 1.2 | 1.4 | V | | Reverse Current | $I_R$ | $V_R = 4 \text V$ | - | - | 10 | $\mu A$ | | Output | | | | | | | | Collector Dark Current | $I_CEO$ | $V_CE = 20 \text V$ | - | - | 100 | nA | | Transfer Characteristics | | | | | | | | Current Transfer Ratio | CTR | $I_F = 5 \text mA, V_CE=5\textV$ | 50* | - | - | % | | Saturation Voltage | $V_CE(sat)$ | $I_F = 20 \text mA, I_C=1\textmA$ | - | 0.1 | 0.2 | V | | Switching Times | | | | | | | | Rise Time | $t_r$ | $V_CC=5\textV, I_C=2\textmA$ | - | 4 | 18 | $\mu s$ | | Fall Time | $t_f$ | $R_L=100 \Omega$ | - | 3 | 18 | $\mu s$ |

Standard models offer around 1500V to 5300Vrms isolation. 1458 optocoupler datasheet

There is no industry-standard optocoupler with the primary designation "1458." The "1458" is famously a dual operational amplifier (e.g., LM1458, UA1458). This paper addresses that ambiguity, clarifies the likely confusion, and provides a rigorous methodological framework for analyzing an optocoupler datasheet, using a real, similar device (e.g., 4N35) as a practical example. | Parameter | Symbol | Conditions | Min

range of , allowing compatibility with both legacy 5V and modern 3.3V logic systems. range of , allowing compatibility with both legacy

The (often referred to simply as the 1458 optocoupler ) is a high-speed, hermetically sealed logic gate optocoupler primarily manufactured by Broadcom (formerly Avago) . It is specifically engineered for high-reliability applications, including industrial, aerospace, and medical systems where signal integrity and electrical isolation are critical. Key Specifications and Performance

The HCPL-1458 series is frequently used in industrial and high-reliability sectors: