A1458 Optocoupler Datasheet Repack

This datasheet is for informational purposes. Verify specifications with original component supplier before design-in.

+---*---+ Anode 1 | 1 8 | Emitter 2 Cathode 1 | 2 7 | Collector 2 Cathode 2 | 3 6 | Collector 1 Anode 2 | 4 5 | Emitter 1 +-------+ Pin Description Table Pin Number Description Anode input for Channel 1 LED 2 Cathode input for Channel 1 LED 3 Cathode input for Channel 2 LED 4 Anode input for Channel 2 LED 5 Emitter output for Channel 1 Phototransistor 6 Collector 1 Collector output for Channel 1 Phototransistor 7 Collector 2 Collector output for Channel 2 Phototransistor 8 Emitter output for Channel 2 Phototransistor 3. Absolute Maximum Ratings

In micro-controller units (MCUs) or programmable logic controllers (PLCs), high external voltages from motors or relays can leak back into delicate logic systems. The A1458 acts as a barrier, allowing the MCU to transmit commands safely via infrared light. II. Switching Power Supplies (SMPS) a1458 optocoupler datasheet

Anode (Input LED 2 / NC depending on single/dual channel variant) Pin 5: GND (Ground reference for the output detector stage) Pin 6: VOUT1cap V sub cap O cap U cap T 1 end-sub (Output Signal 1) Pin 7: VOUT2cap V sub cap O cap U cap T 2 end-sub VBcap V sub cap B (Output Signal 2 or Base connection for transistor tuning) Pin 8: VCCcap V sub cap C cap C end-sub (Positive Power Supply for the detector stage) Functional Mechanism When a forward current ( IFcap I sub cap F

The A1458 is a . It consists of an infrared light-emitting diode (LED) on the input side, optically coupled to an NPN silicon phototransistor on the output side. The coupling is achieved via a transparent insulating layer, typically providing isolation up to 5,000V RMS. This datasheet is for informational purposes

When purchasing, look for the specific ordering code (e.g., HCPL-1458-000E) to confirm package style and RoHS compliance. Key procurement details include:

According to the Xecor product overview and UTSOUCE datasheet, the key technical features of the A1458 include: Typical propagation delay ( tPHLt sub cap P cap H cap L end-sub tPLHt sub cap P cap L cap H end-sub ) is extremely low, often at maximum, enabling rapid switching and data transmission. Absolute Maximum Ratings In micro-controller units (MCUs) or

As one engineering analysis notes, "HCPL-1458 is stronger, with higher CTR and shorter response time, suitable for switching power supply feedback, digital signal isolation, and other scenarios with certain speed requirements. HCNW1458 is a ‘low-key powerhouse’! High withstand voltage, fast response, and good temperature stability, especially suitable for industrial control in high-temperature environments".

| Model | CTR (%) | V_CEO (V) | t_on/t_off (μs) | Isolation (Vrms) | Best For | |-------|---------|-----------|-----------------|------------------|-----------| | | 50-600 | 80 | 5/4 | 5,000 | General purpose, wide CTR | | PC817 | 50-600 | 35 | 4/3 | 5,000 | SMPS feedback (lower V_CEO) | | 4N35 | 100 (min) | 30 | 10/10 | 5,000 | Hobbyist, older designs | | 6N137 | - (logic) | 7 | 0.075 | 5,000 | High-speed data (10 Mbps) |

: The primary purpose of the A1458 is to provide a barrier between two circuits. On your PCB, ensure there is a clear physical gap (a slot or a "no-copper" area) under the optocoupler to maintain the high isolation voltage rating. This is often called a "moat."