1458 Optocoupler Datasheet Upd -

Provides high transient immunity (up to 50 kV/μs), which protects signals from high-frequency noise. Hermetic Sealing: Packaged in a hermetically sealed SOP-8

: Due to its hermetically sealed package, it is often selected for environments where moisture or contaminants would degrade standard plastic packages. Distinguishing the 1458 Family 1458 optocoupler datasheet

: Commonly available in a hermetically sealed 16-DIP or SOP-8 package for high-reliability environments. Review: Pros & Cons HCPL-1458 Avago - Xecor Provides high transient immunity (up to 50 kV/μs),

Ensuring patient safety through high-voltage galvanic isolation. Important Distinction: HCPL-1458 vs. MC1458 Single Channel, High Speed Optocouplers Technical Data Review: Pros & Cons HCPL-1458 Avago - Xecor

| 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 | $\mu s$ |

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

An Arduino (5V logic) needs to switch a 120VAC lamp via a TRIAC. Solution: Use the optocoupler (e.g., MOC3021 – a special TRIAC driver) to bridge the gap. The 1458 is not here; you'd use a dedicated "random phase" optotriac. For DC loads, the 4N35 works perfectly.