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ST485CN - STMicroelectronics

Description: Low power RS-485/RS-422 transceiver

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ST485CN - STMicroelectronics - PCB symbol
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ST485CN - STMicroelectronics PCB footprint - Dual-In-Line Packages - Dual-In-Line Packages - DIP8_2
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ST485CN - STMicroelectronics - 3D model - Dual-In-Line Packages - DIP8_2
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ST485CN Details

  • Manufacturer Part Number:

    ST485CN

  • Brand Name:

    STMicroelectronics

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    DIP

  • Package Description:

    PLASTIC, DIP-8

  • Pin Count:

    8

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Manufacturer:

    STMicroelectronics

  • YTEOL:

    0

  • Differential Output:

    YES

  • Driver Number of Bits:

    1

  • Input Characteristics:

    DIFFERENTIAL SCHMITT TRIGGER

  • Interface IC Type:

    LINE TRANSCEIVER

  • Interface Standard:

    EIA-422; EIA-485

  • JESD-30 Code:

    R-PDIP-T8

  • JESD-609 Code:

    e3

  • Length:

    9.8 mm

  • Number of Functions:

    1

  • Number of Terminals:

    8

  • Operating Temperature-Max:

    70 °C

  • Out Swing-Min:

    1.5 V

  • Output Low Current-Max:

    0.004 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    DIP

  • Package Equivalence Code:

    DIP8,.3

  • Package Shape:

    RECTANGULAR

  • Package Style:

    IN-LINE

  • Qualification Status:

    Not Qualified

  • Receive Delay-Max:

    230 ns

  • Receiver Number of Bits:

    1

  • Seated Height-Max:

    4.8 mm

  • Supply Current-Max:

    0.9 mA

  • Supply Voltage-Max:

    5.25 V

  • Supply Voltage-Min:

    4.75 V

  • Supply Voltage-Nom:

    5 V

  • Surface Mount:

    NO

  • Temperature Grade:

    COMMERCIAL

  • Terminal Finish:

    MATTE TIN

  • Terminal Form:

    THROUGH-HOLE

  • Terminal Pitch:

    2.54 mm

  • Terminal Position:

    DUAL

  • Transmit Delay-Max:

    70 ns

  • Width:

    7.62 mm

ST485CN Frequently Asked Questions (FAQs)

  • The maximum cable length for reliable communication using ST485CN depends on the baud rate, cable quality, and noise environment. As a general guideline, a cable length of up to 1200 meters is recommended for data rates up to 10 Mbps. However, it's recommended to perform signal integrity analysis and testing to determine the maximum cable length for a specific application.
  • To ensure EMC when using ST485CN, follow proper PCB layout and design guidelines, such as keeping the transmitter and receiver lines close together, using a ground plane, and minimizing loop areas. Additionally, use shielding, filtering, and common-mode chokes as necessary to reduce electromagnetic radiation and susceptibility.
  • The recommended termination scheme for ST485CN is a 120-ohm resistor at each end of the bus, with a common-mode termination of 220-ohm resistors to ground. This helps to reduce reflections, improve signal quality, and increase noise immunity.
  • No, ST485CN is not an isolated transceiver. It does not provide electrical isolation between the transmitter and receiver. If isolation is required, consider using an isolated transceiver such as the ST485ISO or a digital isolator.
  • The maximum operating temperature range for ST485CN is -40°C to 125°C. However, the device's performance and reliability may degrade at extreme temperatures. It's recommended to operate the device within the recommended temperature range for optimal performance.

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ST485CN Overview

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About STMicroelectronics

STMicroelectronics (ST) is a global semiconductor company that designs, manufactures, and markets a broad range of integrated circuits (ICs), discrete devices, and other electronic components. STMicroelectronics offers a diverse portfolio of semiconductor products covering a wide range of applications and industries. Their product categories include microcontrollers, analog and mixed-signal ICs, MEMS (Micro-Electro-Mechanical Systems) sensors, power management ICs, RF (Radio Frequency) transceivers, aut

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