ADM485JR-REEL
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Analog Devices Inc. ADM485JR-REEL

Manufacturer No:
ADM485JR-REEL
Manufacturer:
Analog Devices Inc.
Package:
Bulk
Description:
IC TX/RX SINGLE RS-485 5V 8SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The ADM485JR-REEL from Analog Devices Inc. is a high-speed, low-power differential line transceiver designed for bidirectional data communication on multipoint bus transmission lines. It complies with EIA standards RS-485 and RS-422, making it suitable for various high-speed data transmission applications. The device operates from a single 5 V power supply and features thermal shutdown protection and short-circuit protection to ensure reliable operation.

Key Specifications

Parameter Min Typ Max Unit Test Conditions/Comments
Supply Voltage (VCC) 4.75 5 5.25 V
Driver Propagation Delay (tDPLH) 10 40 60 ns RDIFF = 54 Ω, CL1 = CL2 = 100 pF
Receiver Propagation Delay 15 ns
Output Skew (tSKEW) 5 10 ns RDIFF = 54 Ω, CL1 = CL2 = 100 pF
Rise/Fall Time (tDR, tDF) 3 20 40 ns RDIFF = 54 Ω, CL1 = CL2 = 100 pF
Common-Mode Voltage Range -7 12 V
Driver Short-Circuit Current (IOSD1, IOSD2) 35 250 mA -7 V ≤ VO ≤ +12 V
Receiver Short-Circuit Current (IOSR) 7 95 mA 0 V ≤ VO ≤ VCC
ESD Protection ±15 kV Human body model
Package Type SOIC-8

Key Features

  • Meets EIA RS-485 and RS-422 standards
  • Single 5 V power supply
  • High speed, low power BiCMOS technology
  • Thermal shutdown protection and short-circuit protection
  • High-Z outputs when power is off or driver is disabled
  • Fail-safe receiver output state (logic high if inputs are unconnected)
  • ESD protection on all inputs and outputs
  • High source and sink current capability on driver outputs
  • Supports up to 32 transceivers on a bus, with only one driver enabled at a time

Applications

  • Low power RS-485 systems
  • DTE/DCE interfaces
  • Packet switching and local area networks (LANs)
  • Data concentration and data multiplexers
  • Integrated services digital network (ISDN)
  • Communication networks (optical fiber, wireless, satellite)
  • Automotive electronics (vehicle entertainment, navigation, intelligent driving assistance)
  • Industrial Internet of Things (IoT) applications (smart home, smart agriculture, smart logistics)
  • Consumer electronics (smartphones, tablets, wearable devices)

Q & A

  1. What are the main standards that the ADM485JR-REEL complies with?

    The ADM485JR-REEL complies with EIA RS-485 and RS-422 standards.

  2. What is the operating voltage range of the ADM485JR-REEL?

    The operating voltage range is 4.75 V to 5.25 V.

  3. What is the typical driver propagation delay of the ADM485JR-REEL?

    The typical driver propagation delay is 40 ns.

  4. What is the common-mode voltage range of the ADM485JR-REEL?

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

  5. Does the ADM485JR-REEL have thermal shutdown protection?

    Yes, it has thermal shutdown protection to prevent excessive power dissipation during fault conditions.

  6. How many transceivers can be connected on a bus simultaneously?

    Up to 32 transceivers can be connected on a bus, but only one driver should be enabled at any time.

  7. What type of package does the ADM485JR-REEL use?

    The ADM485JR-REEL uses an SOIC-8 package.

  8. Does the ADM485JR-REEL have ESD protection?

    Yes, it has ESD protection of ±15 kV according to the human body model.

  9. What are some common applications of the ADM485JR-REEL?

    Common applications include low power RS-485 systems, DTE/DCE interfaces, packet switching, local area networks, and various industrial and consumer electronics.

  10. What is the fail-safe state of the receiver output if the inputs are unconnected?

    The receiver output will be in a logic high state if the inputs are unconnected.

Product Attributes

Type:Transceiver
Protocol:RS422, RS485
Number of Drivers/Receivers:1/1
Duplex:- 
Receiver Hysteresis:- 
Data Rate:- 
Voltage - Supply:4.75V ~ 5.25V
Operating Temperature:- 
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 ADM485JR-REEL ADM485JRZ-REEL ADM485JR-REEL7 ADM485AR-REEL
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Product Status Obsolete Active Obsolete Obsolete
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
Receiver Hysteresis - 70 mV - 70 mV
Data Rate - 5Mbps - 5Mbps
Voltage - Supply 4.75V ~ 5.25V 4.75V ~ 5.25V 4.75V ~ 5.25V 4.75V ~ 5.25V
Operating Temperature - 0°C ~ 70°C - -40°C ~ 85°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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