ST3485EBDR
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STMicroelectronics ST3485EBDR

Manufacturer No:
ST3485EBDR
Manufacturer:
STMicroelectronics
Package:
Tape & Reel (TR)
Description:
IC TRANSCEIVER HALF 1/1 8SO
Delivery:
Payment:
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iso45001
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Product Introduction

Overview

The ST3485EBDR, produced by STMicroelectronics, is a 3.3 V powered, low-power transceiver designed for RS-485 and RS-422 communication protocols. This device features a half-duplex configuration with one driver and one receiver, capable of transmitting and receiving data at a guaranteed rate of up to 12 Mbps. It is notable for its high level of protection against electrostatic discharge (ESD), withstanding ±15 kV IEC 61000-4-2 air discharge and ±8 kV IEC 61000-4-2 contact discharge. The ST3485EBDR operates from a single 3.3 V supply without the need for a charge pump and is interoperable with 5 V logic. It is available in a small SO8 package and includes an automotive grade option (ST3485EIY) that meets AEC-Q100 standards.

Key Specifications

Parameter Value
Operating Supply Voltage 3.3 V (3 V to 3.6 V)
Data Rate Up to 12 Mbps
ESD Protection ±15 kV IEC 61000-4-2 air discharge, ±8 kV IEC 61000-4-2 contact discharge
Common Mode Input Voltage Range -7 to 12 V
Shutdown Current 1 µA max
Package Type SO8
Operating Temperature Range -40 to 125 °C (depending on the grade)
Number of Channels 2 (one driver, one receiver)
Interface RS-485 and RS-422
Pinout Industry standard 75176 pinout

Key Features

  • High ESD protection: ±15 kV IEC 61000-4-2 air discharge and ±8 kV IEC 61000-4-2 contact discharge.
  • Operates from a single 3.3 V supply without a charge pump.
  • Interoperable with 5 V logic.
  • Low current shutdown mode: 1 µA max.
  • Guaranteed 12 Mbps data rate.
  • Wide common mode input voltage range: -7 to 12 V.
  • Half-duplex configuration.
  • Industry standard 75176 pinout.
  • Current limiting and thermal shutdown for driver overload protection.
  • Guaranteed high receiver output state for floating inputs with no signal present.
  • Allows up to 64 transceivers on the bus.
  • Automotive grade option (ST3485EIY) meeting AEC-Q100 standards.

Applications

The ST3485EBDR is suitable for various applications, including:

  • Communications equipment.
  • Computers and peripherals.
  • Industrial automation and control systems.
  • Automotive systems, particularly with the automotive grade option (ST3485EIY).

Q & A

  1. What is the operating supply voltage of the ST3485EBDR?

    The ST3485EBDR operates from a single 3.3 V supply (3 V to 3.6 V).

  2. What is the maximum data rate of the ST3485EBDR?

    The ST3485EBDR can transmit and receive data at a guaranteed rate of up to 12 Mbps.

  3. What level of ESD protection does the ST3485EBDR offer?

    The ST3485EBDR offers ±15 kV IEC 61000-4-2 air discharge and ±8 kV IEC 61000-4-2 contact discharge ESD protection.

  4. What is the common mode input voltage range of the ST3485EBDR?

    The common mode input voltage range is -7 to 12 V.

  5. What is the shutdown current of the ST3485EBDR?

    The shutdown current is 1 µA max.

  6. In what package is the ST3485EBDR available?

    The ST3485EBDR is available in an SO8 package.

  7. What are the operating temperature ranges for the ST3485EBDR?

    The operating temperature range is -40 to 125 °C, depending on the specific grade.

  8. How many channels does the ST3485EBDR have?

    The ST3485EBDR has one driver and one receiver, making it a half-duplex configuration.

  9. What interfaces does the ST3485EBDR support?

    The ST3485EBDR supports RS-485 and RS-422 communication protocols.

  10. Is the ST3485EBDR suitable for automotive applications?

    Yes, the ST3485EBDR has an automotive grade option (ST3485EIY) that meets AEC-Q100 standards.

Product Attributes

Type:Transceiver
Protocol:RS422, RS485
Number of Drivers/Receivers:1/1
Duplex:Half
Receiver Hysteresis:70 mV
Data Rate:15Mbps
Voltage - Supply:3V ~ 3.6V
Operating Temperature:-40°C ~ 85°C
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
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Similar Products

Part Number ST3485EBDR ST3485ECDR ST485EBDR ST4485EBDR
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Product Status Active Active Active Active
Type Transceiver Transceiver Transceiver Transceiver
Protocol RS422, RS485 RS422, RS485 RS422, RS485 RS422, RS485
Number of Drivers/Receivers 1/1 1/1 1/1 1/1
Duplex Half Half Half Half
Receiver Hysteresis 70 mV 70 mV 70 mV -
Data Rate 15Mbps 15Mbps 5Mbps 20Mbps
Voltage - Supply 3V ~ 3.6V 3V ~ 3.6V 4.75V ~ 5.25V 3V ~ 3.6V
Operating Temperature -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C -40°C ~ 105°C
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width)
Supplier Device Package 8-SOIC 8-SOIC 8-SOIC 8-SOIC

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