The HCPL-A1458 (also referred to as the A1458) is a high-speed, high-gain logic gate optocoupler manufactured by Broadcom (formerly Avago). It is designed for applications requiring precise signal isolation and high noise immunity, such as driving power transistors (IGBTs/MOSFETs) or managing high-speed digital communications. Key Specifications Typical Specification Data Rate Up to 50 MBd (high-speed logic performance) Propagation Delay 20 ns (typical); max delay typically around 8 ns to 35 ns Supply Voltage ( VCCcap V sub cap C cap C end-sub ) 3.0 V to 5.5 V (supports both 3.3V and 5V logic) Isolation Voltage 3750 Vrms to 5000 Vrms (depending on package/option) Output Type Open Collector (TTL compatible) Common Mode Rejection Min 15,000 V/µs (up to 50 kV/µs in some variants) Operating Temperature -40°C to +85°C (industrial grade) Common Applications
): Typically 3.0V to 5.5V or 4.5V to 5.5V, offering flexibility for different logic levels. a1458 optocoupler datasheet
): Typically 2,500 to 5,000 Vrms. This is the "survival" rating for the gap between input and output. The HCPL-A1458 (also referred to as the A1458
: Features a high common-mode transient immunity (CMR) of at least 15,000 V/μs Reverse Voltage (Input): Usually around 5V
Power Supplies: Switching power supplies and isolated line receivers. Technical Breakdown Guidelines for Reading an Optocoupler Datasheet - Vishay