QD Devices Inc.
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ADM232LJR
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ADM232LJR

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Voltage Level Translator
  • Characteristics: High-speed, low-power, RS-232 interface
  • Package: SOIC (Small Outline Integrated Circuit)
  • Essence: Translates voltage levels between RS-232 and TTL/CMOS logic levels
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: +3.0V to +5.5V
  • Data Rate: Up to 120 kbps
  • Number of Channels: 2
  • Operating Temperature Range: -40°C to +85°C
  • RoHS Compliant: Yes

Detailed Pin Configuration

The ADM232LJR IC has a total of 16 pins. The pin configuration is as follows:

  1. V+ (Positive Power Supply)
  2. V- (Negative Power Supply)
  3. GND (Ground)
  4. T1IN (Channel 1 Transmit Input)
  5. R1OUT (Channel 1 Receive Output)
  6. T1OUT (Channel 1 Transmit Output)
  7. R1IN (Channel 1 Receive Input)
  8. T2IN (Channel 2 Transmit Input)
  9. R2OUT (Channel 2 Receive Output)
  10. T2OUT (Channel 2 Transmit Output)
  11. R2IN (Channel 2 Receive Input)
  12. C1- (Channel 1 Capacitor Connection)
  13. C1+ (Channel 1 Capacitor Connection)
  14. C2+ (Channel 2 Capacitor Connection)
  15. C2- (Channel 2 Capacitor Connection)
  16. VCC (Supply Voltage)

Functional Features

  • Bi-directional voltage level translation between RS-232 and TTL/CMOS logic levels
  • Suitable for interfacing microcontrollers, UARTs, and other digital devices with RS-232 interfaces
  • Supports data rates up to 120 kbps
  • Low power consumption
  • ESD protection on RS-232 inputs and outputs

Advantages and Disadvantages

Advantages: - High-speed data transmission - Wide supply voltage range - RoHS compliant - ESD protection

Disadvantages: - Limited number of channels (2)

Working Principles

The ADM232LJR is designed to translate voltage levels between RS-232 and TTL/CMOS logic levels. It utilizes internal charge pumps to generate the necessary voltage levels for proper communication. The IC receives TTL/CMOS logic level signals and converts them into RS-232 compatible signals, allowing seamless communication between devices operating at different voltage levels.

Detailed Application Field Plans

The ADM232LJR is commonly used in various applications, including:

  1. Industrial automation systems
  2. Data communication equipment
  3. Embedded systems
  4. Networking devices
  5. Test and measurement instruments

Detailed and Complete Alternative Models

  1. MAX232 - Maxim Integrated
  2. SP232 - Exar Corporation
  3. ST232 - STMicroelectronics
  4. LTC232 - Linear Technology

These alternative models offer similar functionality and can be used as replacements for the ADM232LJR in various applications.

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Enumere 10 preguntas y respuestas comunes relacionadas con la aplicación de ADM232LJR en soluciones técnicas

Sure! Here are 10 common questions and answers related to the application of ADM232LJR in technical solutions:

  1. Q: What is ADM232LJR? A: ADM232LJR is a dual RS-232 driver/receiver IC that converts TTL/CMOS logic levels to RS-232 voltage levels.

  2. Q: What is the operating voltage range of ADM232LJR? A: The operating voltage range of ADM232LJR is typically between 3V and 5.5V.

  3. Q: Can ADM232LJR be used for bidirectional communication? A: No, ADM232LJR is a unidirectional driver/receiver IC and cannot be used for bidirectional communication.

  4. Q: What is the maximum data rate supported by ADM232LJR? A: ADM232LJR supports a maximum data rate of 120 kbps.

  5. Q: How many RS-232 channels does ADM232LJR support? A: ADM232LJR supports two independent RS-232 channels.

  6. Q: Does ADM232LJR require external capacitors for operation? A: Yes, ADM232LJR requires four external capacitors for proper operation. Two capacitors are required per channel.

  7. Q: Can ADM232LJR be used with both CMOS and TTL logic levels? A: Yes, ADM232LJR can be used with both CMOS (0V to VCC) and TTL (0V to 5V) logic levels.

  8. Q: What is the typical supply current consumption of ADM232LJR? A: The typical supply current consumption of ADM232LJR is around 5 mA.

  9. Q: Is ADM232LJR compatible with older RS-232 standards? A: Yes, ADM232LJR is fully compatible with older RS-232 standards.

  10. Q: Can ADM232LJR be used in industrial applications? A: Yes, ADM232LJR is suitable for use in various industrial applications that require RS-232 communication.

Please note that these answers are general and may vary depending on specific application requirements and conditions.