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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