ADM487EARZ
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Analog Devices Inc. ADM487EARZ

Manufacturer No:
ADM487EARZ
Manufacturer:
Analog Devices Inc.
Package:
Bulk
Description:
IC TRANSCEIVER HALF 1/1 8SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The ADM487EARZ, produced by Analog Devices Inc., is a 5 V, low-power, half-duplex RS-485/RS-422 transceiver. This device is designed for balanced data transmission and complies with TIA/EIA standards RS-485 and RS-422. It is particularly suited for operation in electrically harsh environments and applications where cables may be frequently plugged or unplugged. The ADM487EARZ features a differential line driver and a differential line receiver, making it ideal for half-duplex data transmission.

Key Specifications

Specification Value
Supply Voltage 5 V ± 10%
Data Rate Up to 250 kbps
Input Impedance 48 kΩ (allowing up to 128 transceivers on the differential bus)
ESD Protection ±15 kV Human Body Model (HBM)
No Load Supply Current 120 - 250 μA (RE = 0 V, DE = VCC)
Supply Current in Shutdown 0.5 - 10 μA (DE = 0 V, RE = VCC)
Driver Short-Circuit Current 35 - 250 mA (−7 V ≤ VO ≤ +12 V)
Receiver Short-Circuit Current 7 - 95 mA (0 V ≤ VO ≤ VCC)

Key Features

  • TIA/EIA RS-485 and RS-422 compliant
  • ±15 kV ESD protection on RS-485 I/O pins
  • Low power consumption with a no-load supply current of 120 - 250 μA
  • Thermal shutdown circuit to prevent excessive power dissipation
  • Fail-safe receiver output state (logic high if inputs are unconnected)
  • Half-duplex operation with shared differential pins for driver and receiver

Applications

  • Industrial automation and control systems
  • Building automation and control systems
  • Remote sensors and data acquisition systems
  • Point-of-sale terminals and other commercial equipment
  • Any application requiring reliable, high-speed data transmission in electrically harsh environments

Q & A

  1. What is the primary function of the ADM487EARZ?

    The ADM487EARZ is a half-duplex RS-485/RS-422 transceiver designed for balanced data transmission.

  2. What are the TIA/EIA standards that the ADM487EARZ complies with?

    The ADM487EARZ complies with TIA/EIA standards RS-485 and RS-422.

  3. What is the supply voltage range for the ADM487EARZ?

    The supply voltage range is 5 V ± 10%.

  4. What level of ESD protection does the ADM487EARZ offer?

    The ADM487EARZ offers ±15 kV ESD protection according to the Human Body Model (HBM).

  5. How many transceivers can be connected on the differential bus?

    Up to 128 transceivers can be connected on the differential bus due to the 48 kΩ input impedance.

  6. What is the maximum data rate supported by the ADM487EARZ?

    The maximum data rate supported is up to 250 kbps.

  7. Does the ADM487EARZ have thermal protection?

    Yes, the ADM487EARZ features a thermal shutdown circuit to prevent excessive power dissipation.

  8. What happens to the receiver output if the inputs are unconnected?

    The receiver output defaults to a logic high state if the inputs are unconnected (floating).

  9. What is the typical application environment for the ADM487EARZ?

    The ADM487EARZ is suited for operation in electrically harsh environments and applications where cables may be frequently plugged or unplugged.

  10. What is the package type of the ADM487EARZ?

    The ADM487EARZ is available in an 8-lead SOIC package.

Product Attributes

Type:Transceiver
Protocol:RS422, RS485
Number of Drivers/Receivers:1/1
Duplex:Half
Receiver Hysteresis:70 mV
Data Rate:250kbps
Voltage - Supply:4.75V ~ 5.25V
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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In Stock

$4.56
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Similar Products

Part Number ADM487EARZ ADM487EWARZ ADM483EARZ ADM485EARZ
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
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 70 mV
Data Rate 250kbps 250kbps 250kbps 2.5Mbps
Voltage - Supply 4.75V ~ 5.25V 4.75V ~ 5.25V 4.5V ~ 5.5V 4.75V ~ 5.25V
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°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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