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PS9821-1-AX - Renesas Electronics

Description: The PS9821-1 and PS9821-2 are active-low type high-speed photocouplers that use a GaAlAs light-emitting diode on the input side and a photodetector IC that includes a photodiode and a signal processor on the same chip on the output side. The PS9821-1, -2 are designed specifically for high common mode transient immunity (CMR) and low pulse width distortion, PS9821-2 is suitable for high density applications.

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PS9821-1-AX - Renesas Electronics - PCB symbol
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PS9821-1-AX - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - PS9821-2-A
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PS9821-1-AX - Renesas Electronics - 3D model - Small Outline Packages - PS9821-2-A
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PS9821-1-AX Details

  • Manufacturer Part Number:

    PS9821-1-AX

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Package Description:

    SSOP-8

  • Country Of Origin:

    Japan

  • HTS Code:

    8541.40.80.00

  • Factory Lead Time:

    18 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    5

  • Additional Feature:

    UL RECOGNIZED

  • Configuration:

    SINGLE

  • Data Rate-Nom:

    15 MBps

  • Forward Current-Max:

    0.02 A

  • Isolation Voltage-Max:

    2500 V

  • JESD-609 Code:

    e4

  • Mounting Feature:

    SURFACE MOUNT

  • Number of Elements:

    1

  • Number of Functions:

    1

  • On-State Current-Max:

    0.025 A

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Optoelectronic Device Type:

    LOGIC IC OUTPUT OPTOCOUPLER

  • Packing Method:

    TAPE

  • Response Time-Nom:

    2e-8 ns

  • Supply Voltage-Min:

    2.7 V

  • Surface Mount:

    YES

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

PS9821-1-AX Frequently Asked Questions (FAQs)

  • Renesas provides a recommended PCB layout guide in their application note (APNK001) which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize noise.
  • Renesas recommends using an external overvoltage protection (OVP) circuit, such as a voltage supervisor IC, to detect and respond to overvoltage conditions. The PS9821-1-AX has an internal OVP circuit, but it's recommended to use an external circuit for added protection.
  • The PS9821-1-AX has an operating temperature range of -40°C to 125°C, but it's recommended to operate within the range of -20°C to 85°C for optimal performance and reliability.
  • Renesas provides a troubleshooting guide in their application note (APNK002) which includes steps to identify and resolve common issues, such as power-on reset, clock frequency, and communication errors.
  • Renesas recommends a specific power-up sequence to ensure proper initialization and operation of the PS9821-1-AX. The sequence involves powering up the VCC and VDD pins in a specific order, followed by the clock signal.

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PS9821-1-AX Overview

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