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MAX3140CEI+ - Analog Devices

Description: Maxim MAX3140CEI+ Universal Asynchronous Receiver & Transmitter RS422, RS485 230kBd, 4.75 → 5.25 V, 28-Pin, QSOP

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MAX3140CEI+ - Analog Devices - PCB symbol
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PCB Footprints
MAX3140CEI+ - Analog Devices PCB footprint - Small Outline Packages - Small Outline Packages - MAX 21-0055_F
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MAX3140CEI+ - Analog Devices - 3D model - Small Outline Packages - MAX 21-0055_F
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MAX3140CEI+ Details

  • Manufacturer Part Number:

    MAX3140CEI+

  • Brand Name:

    Analog Devices Inc

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    28-QSOP-150_MIL

  • Package Description:

    0.150 INCH, 0.025 INCH PITCH, QSOP-28

  • Pin Count:

    28

  • Manufacturer Package Code:

    28-QSOP-150_MIL

  • Country Of Origin:

    Japan, Mainland China, Malaysia, Philippines, Singapore, South Korea, Taiwan, Thailand, USA

  • HTS Code:

    8542.31.00.30

  • Date Of Intro:

    1999-06-01

  • Manufacturer:

    Analog Devices Inc

  • YTEOL:

    9

  • Boundary Scan:

    NO

  • Communication Protocol:

    ASYNC, BIT

  • Data Transfer Rate-Max:

    0.029296875 MBps

  • External Data Bus Width:

    1

  • JESD-30 Code:

    R-PDSO-G28

  • JESD-609 Code:

    e3

  • Length:

    9.9 mm

  • Low Power Mode:

    YES

  • Moisture Sensitivity Level:

    1

  • Number of Serial I/Os:

    1

  • Number of Terminals:

    28

  • Operating Temperature-Max:

    70 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    HSSOP

  • Package Equivalence Code:

    SSOP28,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, HEAT SINK/SLUG, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    1.75 mm

  • Supply Current-Max:

    2 mA

  • Supply Voltage-Max:

    5.5 V

  • Supply Voltage-Min:

    4.5 V

  • Supply Voltage-Nom:

    5 V

  • Surface Mount:

    YES

  • Technology:

    CMOS

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    Matte Tin (Sn)

  • 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:

    SERIAL IO/COMMUNICATION CONTROLLER, SERIAL

MAX3140CEI+ Frequently Asked Questions (FAQs)

  • A good layout and routing practice for the MAX3140CEI+ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the clock signal traces. Additionally, it's recommended to place the device close to the crystal oscillator and use a shielded cable for the RS-232 interface to reduce EMI.
  • To ensure reliable operation of the MAX3140CEI+ in high-temperature environments, it's essential to follow proper thermal management practices, such as providing adequate heat sinking, using a thermally conductive PCB material, and keeping the device within its recommended operating temperature range. Additionally, consider using a thermal protection circuit to prevent overheating.
  • Using a non-standard crystal oscillator frequency with the MAX3140CEI+ may affect the device's performance, including its baud rate accuracy and clock stability. It's recommended to use a crystal oscillator frequency within the specified range (typically 14.7456 MHz or 16 MHz) to ensure reliable operation and compliance with RS-232 standards.
  • To troubleshoot issues with the MAX3140CEI+ not transmitting or receiving data correctly, start by checking the device's power supply, clock signal, and RS-232 interface connections. Verify that the device is properly configured and that the baud rate and data format are correctly set. Use a logic analyzer or oscilloscope to monitor the device's signals and identify any errors or anomalies.
  • While the MAX3140CEI+ can operate with a 3.3V power supply, it's not recommended as it may affect the device's performance and reliability. The device's internal voltage regulator is designed to operate with a 5V power supply, and using a lower voltage may result in reduced output voltage and increased power consumption.

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MAX3140CEI+ Overview

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About Analog Devices

Analog Devices Inc. is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits and software solutions for the industrial, automotive, healthcare, communications industries. Analog Devices serves a diverse range of markets including industrial, automotive, healthcare, energy, aerospace, defense, and consumer electronics industries. Analog Devices’ product portfolio includes a wide range of ICs, modules, and subsystems.

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MAX3140CEI+ Alternates

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Part Image MAX3140EEI+ Analog Devices Inc

Serial I/O Controller, 1 Channel(s), 0.029296875MBps, CMOS, PDSO28