1458 Optocoupler Datasheet ~upd~ | 2024 |

| Parameter | Symbol | Conditions | Min | Typ | Max | Unit | |-----------|--------|------------|-----|-----|-----|------| | Current Transfer Ratio (CTR) | CTR | ( I_F = 5 mA, V_CE = 5 V ) | 50 | 300 | 600 | % | | Collector-emitter saturation | ( V_CE(sat) ) | ( I_F = 10 mA, I_C = 2 mA ) | - | 0.2 | 0.4 | V | | Isolation resistance | ( R_ISO ) | ( V_IO = 500 V ) | ( 10^11 ) | - | - | Ω | | Isolation capacitance | ( C_ISO ) | ( V_IO = 0, f = 1 MHz ) | - | 1 | - | pF |

Your exact and target switching frequency The maximum isolation voltage ( VRMScap V sub cap R cap M cap S end-sub ) your regulatory standards require

Enhances efficiency by reducing power losses at the output driver stage during low-logic states. Pinout Configuration and Packaging 1458 optocoupler datasheet

– The base terminal of the internal phototransistor. It can be left disconnected for standard operation, or connected to a high-value resistor to ground to adjust sensitivity and speed. 3. Absolute Maximum Ratings

These parameters represent the predictable performance metrics of the 1458 optocoupler under specific operational windows. Input Characteristics Typical 1.25 V, Maximum 1.65 V ( Reverse Current ( IRcap I sub cap R ): Typical 0.1 µA, Maximum 10 µA ( Junction Capacitance ( CJcap C sub cap J ): Typical 25 pF ( Output Characteristics Collector-Emitter Dark Current ( ICEOcap I sub cap C cap E cap O end-sub ): Typical 1.0 nA, Maximum 100 nA ( Collector-Emitter Breakdown Voltage ( BVCEOcap B cap V sub cap C cap E cap O end-sub ): Minimum 50 V ( Emitter-Collector Breakdown Voltage ( BVECOcap B cap V sub cap E cap C cap O end-sub ): Minimum 7.0 V ( Transfer Characteristics | Parameter | Symbol | Conditions | Min

| Pin | Name | Function | | :--- | :--- | :--- | | | V⁺ (Anode) | Anode of the internal infrared LED (Input). | | 2 | V⁻ (Cathode) | Cathode of the internal infrared LED (Input). | | 3 | NC | Not Connected. | | 4 | GND | Ground connection for the output side. | | 5 | V₀ (Output) | Open-collector output of the photodetector. | | 6 | VCC (Cathode) | Power supply for the output side. | | 7 | NC | Not Connected. | | 8 | VE (Enable) | Output enable pin. |

The HCPL-1458 is a high-speed, high-gain optocoupler manufactured by Broadcom (formerly Avago/Agilent). It is designed for applications requiring high reliability in harsh environments, often featuring a hermetically sealed SOP-8 package. Key Features & Specifications | | 2 | V⁻ (Cathode) | Cathode

Parts distributors often list "1458" in the same category as analog ICs. A novice engineer might need an isolator, see "1458" on a schematic (meant for an op-amp), and assume it's an optocoupler. Consequently, if you are looking for an optocoupler, you should search for "4N35 datasheet" or "PC817 datasheet" – these are the true workhorses of isolation.

Assuming your "1458 optocoupler" is a standard DIP-6, here is the pinout (identical to 4N35, PC817, and most general-purpose types):