A1458 Optocoupler Datasheet 🆕 Popular

, making it exceptionally resilient against rapid voltage changes. 5. Typical Application Circuits

The CTR is not linear. It peaks at a certain forward current range (usually between 5mA and 15mA). Designing circuits with too little or too much input current can cause a dramatic drop in performance.

The output collector current ( ICcap I sub cap C ) depends on the CTR. Assuming a conservative CTR of 100%:

If the part physically has "A1458" printed on it: a1458 optocoupler datasheet

Assume you want a forward current ( IFcap I sub cap F ) of 10mA to ensure a solid CTR.From the datasheet,

Operating the device beyond these limits can cause permanent damage. All ratings are specified at an ambient temperature ( TAcap T sub cap A ) of 25°C unless otherwise noted. Input Diode (Emitter) 50 mA Peak Forward Current ( IFPcap I sub cap F cap P end-sub ): 1 A (Pulse width ≤is less than or equal to s, duty cycle = 1%) Reverse Voltage ( VRcap V sub cap R ): 5 V Power Dissipation ( PDcap P sub cap D ): 70 mW Output Phototransistor (Detector) Collector-Emitter Voltage ( VCEOcap V sub cap C cap E cap O end-sub ): 35 V (or up to 80V depending on manufacturing standard) Emitter-Collector Voltage ( VECOcap V sub cap E cap C cap O end-sub ): 6 V Collector Current ( ICcap I sub cap C ): 50 mA Power Dissipation ( PCcap P sub cap C ): 150 mW Total Component Ratings Isolation Voltage ( VISOcap V sub cap I cap S cap O end-sub ): 3,750 Vrms to 5,000 Vrms (AC, 1 minute, R.H. ≤is less than or equal to Operating Temperature ( TOPRcap T sub cap O cap P cap R end-sub ): -55°C to +100°C Storage Temperature ( TSTGcap T sub cap S cap T cap G end-sub ): -55°C to +125°C Lead Soldering Temperature: 260°C for 10 seconds 4. Electrical Characteristics

Graphs show how parameters like CTR, propagation delay, and supply current vary with temperature, input current, and other conditions. These are invaluable for designing robust circuits. , making it exceptionally resilient against rapid voltage

| Parameter | Symbol | Test Condition | Min | Typ | Max | Unit | |--------------------|--------|----------------------|-----|-----|-----|------| | Rise time | t_r | IF = 10 mA | - | 4 | 8 | µs | | Fall time | t_f | IF = 10 mA | - | 3 | 6 | µs | | Turn-on time | t_on | IF = 10 mA | - | 6 | 10 | µs | | Turn-off time | t_off | IF = 10 mA | - | 5 | 8 | µs |

: Ground loop elimination and signal isolation for TTL/CMOS high-speed logic .

A1458 Optocoupler Datasheet: High-Speed Logic Gate Isolation Guide It peaks at a certain forward current range

, making it compatible with both low-voltage and standard digital systems. Isolation:

) of depending on test configurations and sub-variants, enabling crisp high-frequency data transmission. Isolation Voltage Capacity ( VISOcap V sub cap I cap S cap O end-sub ): Rated up to 3,750 VRMScap V sub cap R cap M cap S end-sub VRMScap V sub cap R cap M cap S end-sub

If you are designing a circuit or replacing a component:

The high-speed and high-isolation capabilities of the A1458 optocoupler make it a perfect fit for a wide range of circuits. Its datasheet will often include example application schematics. Here are several common uses: