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650R-21LFT - Renesas Electronics

Description:  The ICS650-21 is a low cost, low-jitter, high-performance clock synthesizer for system peripheral applications. Using analog/digital Phase Locked Loop (PLL) techniques, the device accepts a parallel resonant 25 MHz crystal input to produce up to eight output clocks. The device provides clocks for PCI, SCSI, Fast Ethernet, Ethernet, USB, and AC97. The user can select one of three USB frequencies and also one of two AC97 audio frequencies. The OE pin puts all outputs into a high-impedance state for board lev

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650R-21LFT - Renesas Electronics - PCB symbol
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650R-21LFT - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - PCG 20
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650R-21LFT - Renesas Electronics - 3D model - Small Outline Packages - PCG 20
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650R-21LFT Details

  • Manufacturer Part Number:

    650R-21LFT

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    QSOP

  • Package Description:

    SSOP-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    PCG20

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    0

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e3

  • Length:

    8.65 mm

  • Moisture Sensitivity Level:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    70 °C

  • Output Clock Frequency-Max:

    100 MHz

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SSOP

  • Package Equivalence Code:

    SSOP20,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Primary Clock/Crystal Frequency-Nom:

    25 MHz

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    30 mA

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    3 V

  • Supply Voltage-Nom:

    3.3 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.635 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    3.9 mm

  • uPs/uCs/Peripheral ICs Type:

    CLOCK GENERATOR, PROCESSOR SPECIFIC

650R-21LFT Frequently Asked Questions (FAQs)

  • Renesas provides a recommended PCB layout guide in their application note (APN) document, which includes thermal vias, copper pours, and component placement guidelines to ensure optimal thermal performance.
  • Renesas recommends using an external overcurrent protection circuit, such as a fuse or a dedicated overcurrent protection IC, to prevent damage to the device. The datasheet provides guidelines for selecting the appropriate overcurrent protection component.
  • The maximum allowed voltage drop across the internal voltage regulator is typically around 1.5V to 2V, depending on the specific application and operating conditions. Renesas recommends consulting their application engineers for specific guidance.
  • While the 650R-21LFT is rated for operation up to 125°C, Renesas recommends derating the device's performance and power dissipation at higher temperatures. Consult the datasheet and application notes for specific guidance on high-temperature operation.
  • Renesas provides EMC guidelines and recommendations in their application notes, including PCB layout considerations, shielding, and filtering techniques to minimize electromagnetic interference.

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650R-21LFT Overview

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