high-speed, single-channel optocoupler (also known as the HCPL-A1458 ) manufactured by Avago/Agilent
, essential for protecting sensitive microcontrollers from high-voltage power stages. Key Specifications Up to 50 MBd Propagation Delay 20 ns (typical) Isolation Voltage Supply Voltage ( cap V sub cap C cap C end-sub 3.0V to 5.5V Operating Temp Typical Applications a1458 optocoupler datasheet
The A1458 optocoupler datasheet often includes reference circuits. Here are two common ones. CTR degradation over temperature and time (LED aging
Identify the part – I see no common industry optocoupler named “A1458.” Could it be a misreading of: I_F = 0
Red Flag: If the A1458 datasheet lacks a derating curve (power vs. ambient temperature), do not use it in high-reliability designs.
| Parameter | Symbol | Conditions | Min | Typ | Max | Unit | |-----------|--------|-------------|-----|-----|-----|------| | Collector-Electron Breakdown | BV_CEO | I_C = 100 μA, I_F = 0 | 80 | - | - | V | | Emitter-Collector Breakdown | BV_ECO | I_E = 100 μA | 6 | - | - | V | | Dark Current (Leakage) | I_CEO | V_CE = 20V, I_F = 0, Ta=25°C | - | 10 | 100 | nA | | Dark Current at 100°C | I_CEO | V_CE = 20V, I_F = 0, Ta=100°C | - | 1 | 10 | μA |
): Operates between 3.0 V and 5.5 V, making it compatible with both 3.3V and 5V logic .