1458 Optocoupler Datasheet __exclusive__

Collector terminal of the Channel 1 phototransistor.

Provides high transient immunity (up to 50 kV/μs), which protects signals from high-frequency noise. Hermetic Sealing: Packaged in a hermetically sealed SOP-8

R1=VCC−VFIF=5V−1.25V0.01A=375 Ωcap R sub 1 equals the fraction with numerator cap V sub cap C cap C end-sub minus cap V sub cap F and denominator cap I sub cap F end-fraction equals the fraction with numerator 5 V minus 1.25 V and denominator 0.01 A end-fraction equals 375 space cap omega Standard value substitution: Use a or 330 Ωcap omega resistor. 2. Protection Diode ( D1cap D sub 1

This comprehensive guide serves as an expanded, engineering-grade datasheet and application breakdown for the 1458 series optocoupler. Functional Overview 1458 optocoupler datasheet

Acts as a safe interface between logic circuits and high-voltage TRIAC or Solid-State Relay (SSR) driver networks.

Isolating power supplies and driving power MOSFETs or IGBTs in motor control feedback loops.

Maintain a clear physical barrier beneath the chip on your PCB layer. Do not run copper traces or ground planes across the isolation zone between pins 1–4 and pins 5–8. Collector terminal of the Channel 1 phototransistor

Part numbers change, and manufacturers sometimes discontinue components. For the "1458" optocoupler, you have a few avenues to explore for alternatives:

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

(often colloquially called the A1458) manufactured by Avago (now Broadcom). STMicroelectronics Isolating power supplies and driving power MOSFETs or

The primary manufacturer is Broadcom Inc. , which acquired Avago Technologies. Avago itself had previously acquired the optocoupler business from Agilent Technologies and Hewlett-Packard (HP). Therefore, you will often see these parts branded as Broadcom, Avago, Agilent, or HP in the market.

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

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: