1458 Optocoupler Datasheet [cracked]

High CMR indicates that the device can successfully reject transient noise spikes between the input and output grounds without triggering false outputs. 5. Typical Application Circuits Circuit 1: Microcontroller Interfacing (Logic Isolation)

Typically 8 ns to 35 ns (depending on specific testing conditions and sub-variants like the HCPL-1458#060), allowing for high-frequency signal transmission.

Because of its hermetic sealing and high-speed operation, the 1458 is frequently used in: 1458 optocoupler datasheet

| Parameter | Symbol | Rating | Unit | |-----------|--------|--------|------| | Forward Current (LED) | I_F | 60 | mA | | Reverse Voltage (LED) | V_R | 6 | V | | Collector-Emitter Voltage | V_CEO | 30 | V | | Emitter-Collector Voltage | V_ECO | 7 | V | | Power Dissipation (Output) | P_out | 150 | mW | | Total Package Dissipation | P_tot | 250 | mW | | | V_ISO | 5000 | V_RMS |

* Input side V_IN ----|>|----+---- R_IN ---- GND LED | | ( ) Pull‑up resistor R_PULL (10 kΩ) to V_CC | +----> V_OUT (collector) | ( ) Emitter to GND High CMR indicates that the device can successfully

Pin 1: Anode Pin 2: Cathode Pin 3: No connection (NC) Pin 4: Emitter Pin 5: Collector Pin 6: Base (optional; leave open for standard operation)

In this post, we will decode the , look at its specifications, pinouts, and typical applications. Because of its hermetic sealing and high-speed operation,

The component designation "1458" presents a significant ambiguity in electronics engineering, as it is historically associated with the LM1458 dual operational amplifier rather than any optocoupler. This paper first resolves this nomenclature conflict, then establishes a generalized methodology for interpreting optocoupler datasheets. Using the widely recognized 4N35 optocoupler as a representative case study, we analyze key parameters including Current Transfer Ratio (CTR), isolation voltage, rise time, and forward voltage. The paper concludes with a decision matrix for selecting optocouplers in common applications such as microcontroller isolation and solid-state relay driving.

The internal photodetector includes an internal Faraday shield. This shield provides high common-mode rejection (CMR), decoupling the input side from harsh transient noise on the output side.

Imagine you found a scrap optocoupler labeled "1458" (maybe a counterfeit or house number). How do you test it?