ADM233LANZ

Product Overview

• Category: Integrated Circuit (IC)
• Use: Communication and Networking
• Characteristics: Low-power, RS-232 Line Driver/Receiver
• Package: 16-pin PDIP (Plastic Dual In-line Package)
• Essence: Provides a complete interface between the serial port of a microcontroller or computer and the serial port of an RS-232 peripheral device.
• Packaging/Quantity: Available in tubes or reels, quantity varies based on supplier.

Specifications

• Supply Voltage: 3V to 5.5V
• Data Rate: Up to 120kbps
• Number of Channels: 2 (Transmitter and Receiver)
• Operating Temperature Range: -40°C to +85°C
• RoHS Compliant: Yes

Detailed Pin Configuration

1. VCC - Power supply voltage input
2. GND - Ground reference
3. T1OUT - Transmitter output for Channel 1
4. R1IN - Receiver input for Channel 1
5. R1OUT - Receiver output for Channel 1
6. T1IN - Transmitter input for Channel 1
7. R2OUT - Receiver output for Channel 2
8. T2IN - Transmitter input for Channel 2
9. R2IN - Receiver input for Channel 2
10. T2OUT - Transmitter output for Channel 2
11. C1+ - External capacitor connection for Channel 1
12. C1- - External capacitor connection for Channel 1
13. C2+ - External capacitor connection for Channel 2
14. C2- - External capacitor connection for Channel 2
15. SHDN - Shutdown control input
16. VCC - Power supply voltage input

Functional Features

• Low-power operation, suitable for battery-powered devices
• Supports RS-232 voltage levels (-5V to +5V)
• Integrated charge pump for voltage level conversion
• Automatic power-down mode when not in use
• Built-in thermal shutdown protection

Advantages and Disadvantages

Advantages

• Low power consumption extends battery life
• Wide operating temperature range allows usage in various environments
• Integrated charge pump simplifies external circuitry
• Shutdown control feature helps conserve power
• Thermal shutdown protection prevents damage due to overheating

Disadvantages

• Limited data rate compared to some newer ICs
• Requires external capacitors for proper operation
• Only supports RS-232 communication, not other protocols

Working Principles

ADM233LANZ acts as a bridge between the serial port of a microcontroller or computer and an RS-232 peripheral device. It converts the logic-level signals from the microcontroller into RS-232 voltage levels using an integrated charge pump. The transmitter section amplifies the logic-level signals to RS-232 voltage levels, while the receiver section converts the RS-232 voltage levels back to logic-level signals.

The IC operates on a low supply voltage and consumes minimal power. It includes a shutdown control input that allows the device to enter a low-power state when not in use. Additionally, it incorporates thermal shutdown protection to prevent damage from excessive heat.

Detailed Application Field Plans

ADM233LANZ finds applications in various fields where RS-232 communication is required. Some common application areas include:

1. Industrial Automation: Used for connecting microcontrollers to RS-232 devices like sensors, actuators, and PLCs.
2. Telecommunications: Enables communication between computers and modems, routers, or other networking equipment.
3. Medical Devices: Facilitates connectivity between medical instruments and computer systems for data transfer and control.
4. Consumer Electronics: Allows integration of RS-232 peripherals, such as barcode scanners or printers, with consumer devices like POS systems or home automation systems.

Detailed and Complete Alternative Models

1. MAX232: Similar functionality, available in various package options.
2. SP3232: Higher data rate support, compatible with 3.3V and 5V systems.
3. LTC1480: Low-power RS-485 transceiver, suitable for long-distance communication.

These alternative models offer similar features and can be considered based on specific requirements and compatibility with the target system.

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