1458 — Optocoupler Datasheet

Operating the component beyond these limits can cause permanent damage or severely degrade long-term reliability. All ratings are measured at an ambient temperature ( TAcap T sub cap A ) of 25°C unless otherwise specified. Input Diode (LED) Ratings 60 mA Peak Forward Current ( IFMcap I sub cap F cap M end-sub ): 3.0 A (Pulse width , duty cycle Reverse Voltage ( VRcap V sub cap R ): 6.0 V Power Dissipation ( PDcap P sub cap D ): 100 mW Output Transistor Ratings Collector-Emitter Voltage ( VCEOcap V sub cap C cap E cap O end-sub ): 30 V Collector-Base Voltage ( VCBOcap V sub cap C cap B cap O end-sub ): 70 V Emitter-Collector Voltage ( VECOcap V sub cap E cap C cap O end-sub ): 7.0 V Continuous Collector Current ( ICcap I sub cap C ): 100 mA Power Dissipation ( PDcap P sub cap D ): 150 mW Total Device Ratings Isolation Voltage ( VISOcap V sub cap I cap S cap O end-sub ): 5300 VRMScap V sub cap R cap M cap S end-sub (AC for 1 minute) Operating Temperature Range ( Toprcap T sub o p r end-sub ): -55°C to +100°C Storage Temperature Range ( Tstgcap T sub s t g end-sub ): -55°C to +150°C Total Power Dissipation ( Ptotcap P sub t o t end-sub ): 250 mW 4. Electrical Characteristics

The HCPL-1458 is typically housed in an or DIP-8 package. While specific internal diagrams vary by variant, a standard high-speed 8-pin optocoupler often follows this general layout:

Range: Can typically operate across a broad spectrum of supply voltages, enhancing design flexibility.

: Common high-speed optocouplers, although input current and speed specifications may vary, requiring a re-check of your resistor values. 1458 optocoupler datasheet

The "1458 optocoupler datasheet" does not exist because the LM1458 is an operational amplifier, not an optoisolator. This paper has used that misconception as a pedagogical tool to emphasize the importance of precise part number verification and structured datasheet analysis. By dissecting a real optocoupler (4N35) datasheet, we have demonstrated how to interpret CTR, switching speeds, isolation ratings, and thermal limits. Engineers must always cross-reference component designations with manufacturer databases before proceeding with design. For optocoupler needs, one should select from established families like 4N, PC, HCPL, or CNY, never relying on vague or incorrect part numbers.

Eliminates ground loops in distributed factories where controllers and machinery operate on different electrical ground points. 7. Sample Circuit: Interfacing a 5V MCU to a 24V Relay

Unlike traditional couplers, the HCPL-1458 is optimized for modern 3.3V and 5V digital systems, offering high common-mode rejection (CMR) and low propagation delay. Key Features of the HCPL-1458 Operating the component beyond these limits can cause

Assume a mistaken desire to use a "1458 optocoupler" – instead, we select the .

If you are working with industrial controls, logic ground isolation, or high-noise environments, the is a standout component. Originally developed by Hewlett-Packard (and subsequently produced by Avago Technologies and Broadcom), this high-gain optocoupler offers exceptional performance.

Before you can use the device, you need to understand how to connect it. The datasheet will provide a pinout diagram and a functional block diagram showing the internal workings. The "1458 optocoupler datasheet" does not exist because

The HCPL-1458 is characterized by its high common-mode rejection and speed, making it suitable for demanding industrial environments. Typical Value Description Maximum signal transmission speed Propagation Delay 4 µs (typical) Signal delay time from input to output Isolation Voltage 3750 Vrms to 5300 Vrms Maximum rated isolation Operating Voltage (Vcc) 4.5 V to 5.5 V Standard logic-level supply voltage Operating Temperature -40°C to +85°C Range for industrial applications Current Transfer Ratio 60% (minimum) Ratio of output current to input current Pinout Configuration

If one mistakenly searches for "1458 optocoupler," the correct workflow is:

Optocouplers are the watchdogs of mixed-voltage electronics. Treat them with respect, read their datasheets religiously, and your circuits will remain safe, stable, and silent. Happy isolating.