Typically not internally connected to optimize noise immunity. Pin 8 ( VCCcap V sub cap C cap C end-sub ): Power supply input supporting 3.0V to 5.5V rails. Key Features Explained Low-Voltage & Wide Supply Range
If one mistakenly searches for "1458 optocoupler," the correct workflow is:
⚠️ : If you have a specific 1458 optocoupler from a known brand (e.g., Siemens SFH1458 or QT-Brightek QTLP1458), please refer to that manufacturer’s official datasheet, as parameters may differ significantly from the generic version above.
Engineers turn to the HCPL-1458 technical specifications when standard phototransistor couplers lack the speed or low-voltage efficiency required for modern microcontrollers. Specification Value Key Benefit 3.0 V to 5.5 V Direct compatibility with 3.3V and 5V logic. Propagation Delay 35 ns (typical at 10 kHz) Enables high-bit-rate data transmission. Isolation Rating VRMScap V sub cap R cap M cap S end-sub (1 Minute) Heavy-duty protection against spikes. Package Type SOP-8 (Small Outline) Ideal for high-density, space-constrained PCBs. Output Type Open Collector / Logic Gate Flexible level shifting with external pull-ups. Pinout Configuration and Package Details 1458 optocoupler datasheet
Unlike single-channel optocouplers (like the ubiquitous 4N25 or PC817), the 1458 architecture is optimized for space-constrained designs requiring multiple isolated channels, high common-mode rejection (CMR), and predictable switching speeds. It is frequently utilized in industrial automation, data communications, and power supply feedback loops. 2. Internal Block Diagram and Pinout Configuration
The family of optocouplers associated with the keyword "1458 optocoupler datasheet" represents a high-performance range of digital isolators. They are characterized by their high-speed data rates, superior noise immunity (high CMTI), strong isolation voltage ratings, and TTL-compatible outputs, making them an excellent choice for engineers who require robust signal isolation. If you have a more specific part in mind, such as the , HCPL-A1458 , or HCNW1458 , I can help you refine the search to find even more precise technical details.
The 1458 optocoupler is standardly housed in a . It is also available in surface-mount configurations (SMD) for automated PCB assembly. Pinout Diagram (Top View) Isolation Rating VRMScap V sub cap R cap
The 1458 optocoupler datasheet provides a wealth of information that can be used to design and develop applications that utilize this device. Here are some tips on how to use the datasheet:
: Commonly available in a hermetically sealed 16-DIP or SOP-8 package for high-reliability environments. Review: Pros & Cons HCPL-1458 Avago - Xecor
Are you looking to replace an , or designing a circuit for a specific communication protocol like SPI or RS-485? Let me know, and I can help calculate the exact resistor values for your design. Single Channel, High Speed Optocouplers Technical Data Absolute Maximum Ratings
: Used in feedback loops to safely transmit regulation signals across isolation barriers.
Top View (8-Pin DIP / SMD) +-------\_/-------+ A1 | 1 8 | VCC (Supply Voltage) K1 | 2 7 | VO1 (Output 1) K2 | 3 6 | VO2 (Output 2) A2 | 4 5 | GND (Ground) +-----------------+ Use code with caution. Pin Description Table Pin Number Description Anode of Channel 1 Input LED 2 Cathode of Channel 1 Input LED 3 Cathode of Channel 2 Input LED 4 Anode of Channel 2 Input LED 5 Ground reference for the output stage 6 Output signal for Channel 2 7 Output signal for Channel 1 8 Primary Power Supply for the detector stage 3. Absolute Maximum Ratings