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844021BG-01LFT - Renesas Electronics

Description: The 844021-01 is an Ethernet Clock Generator and a member of the family of high performance devices from IDT. The 844021-01 uses an 18pF parallel resonant crystal over the range of 24.5MHz – 34MHz. For Ethernet applications, a 25MHz crystal is used. The 844021-01 has excellent <1ps phase jitter performance, over the 1.875MHz – 20MHz integration range. The 844021-01 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.

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844021BG-01LFT - Renesas Electronics - PCB symbol
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PCB Footprints
844021BG-01LFT - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - TSSOP08
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844021BG-01LFT - Renesas Electronics - 3D model - Small Outline Packages - TSSOP08
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844021BG-01LFT Details

  • Manufacturer Part Number:

    844021BG-01LFT

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    TSSOP

  • Pin Count:

    8

  • Manufacturer Package Code:

    PGG8

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.01

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    0

  • Additional Feature:

    ALSO OPERATES AT 3.3V SUPPLY

  • JESD-30 Code:

    R-PDSO-G8

  • JESD-609 Code:

    e3

  • Length:

    4.4 mm

  • Moisture Sensitivity Level:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Output Clock Frequency-Max:

    170 MHz

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    TSSOP

  • Package Equivalence Code:

    TSSOP8,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, THIN PROFILE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Primary Clock/Crystal Frequency-Nom:

    34 MHz

  • Seated Height-Max:

    1.2 mm

  • Supply Current-Max:

    75 mA

  • Supply Voltage-Max:

    2.625 V

  • Supply Voltage-Min:

    2.375 V

  • Supply Voltage-Nom:

    2.5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Terminal Finish:

    TIN

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.65 mm

  • Terminal Position:

    DUAL

  • Width:

    3 mm

  • uPs/uCs/Peripheral ICs Type:

    CLOCK GENERATOR, OTHER

844021BG-01LFT Frequently Asked Questions (FAQs)

  • Renesas provides a recommended PCB layout guide for the 844021BG-01LFT, which includes guidelines for thermal vias, copper pours, and component placement to ensure optimal thermal performance. Contact Renesas support for the layout guide.
  • The 844021BG-01LFT does not have built-in overcurrent protection. Engineers can implement external overcurrent protection using a dedicated IC or a discrete component solution, such as a fuse or a current sense resistor, to detect and respond to overcurrent conditions.
  • Renesas recommends following the JEDEC J-STD-020D.1 standard for soldering the 844021BG-01LFT. The recommended soldering profile includes a peak temperature of 260°C, with a dwell time of 30-60 seconds above 220°C.
  • The 844021BG-01LFT is designed to meet the vibration requirements of the automotive industry. However, it's essential to follow Renesas' guidelines for vibration testing and to ensure that the device is properly mounted and secured to the PCB to prevent damage or malfunction.
  • Renesas provides a troubleshooting guide for the internal oscillator in the 844021BG-01LFT. Engineers can check the oscillator's frequency and amplitude using an oscilloscope, and verify that the oscillator is properly configured and enabled in the device's registers.

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844021BG-01LFT Overview

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