MC1489DR2G

Product Overview

• Category: Integrated Circuit
• Use: RS-232 Line Driver/Receiver
• Characteristics: High-speed, low-power, compatible with EIA/TIA-232 and V.28 standards
• Package: SOIC-14
• Essence: Converts TTL/CMOS logic levels to RS-232 voltage levels and vice versa
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 4.5V to 5.5V
• Data Rate: Up to 120 kbps
• Operating Temperature Range: -40°C to +85°C
• Input/Output Logic Levels: TTL/CMOS
• Output Voltage Swing: ±5V
• Input Threshold Voltage: ±200mV
• Propagation Delay Time: 100ns (typical)

Pin Configuration

The MC1489DR2G has a total of 14 pins. The pin configuration is as follows:

1. VCC - Power supply voltage
2. GND - Ground reference
3. R1IN - Receiver input for channel 1
4. R1OUT - Receiver output for channel 1
5. R2IN - Receiver input for channel 2
6. R2OUT - Receiver output for channel 2
7. R3IN - Receiver input for channel 3
8. R3OUT - Receiver output for channel 3
9. R4IN - Receiver input for channel 4
10. R4OUT - Receiver output for channel 4
11. T1IN - Transmitter input for channel 1
12. T1OUT - Transmitter output for channel 1
13. T2IN - Transmitter input for channel 2
14. T2OUT - Transmitter output for channel 2

Functional Features

• Converts TTL/CMOS logic levels to RS-232 voltage levels and vice versa
• Provides EIA/TIA-232 and V.28 standard compatibility
• High-speed operation with low power consumption
• Wide operating temperature range for versatile applications
• Four independent receiver and transmitter channels

Advantages and Disadvantages

Advantages: - High-speed data transmission up to 120 kbps - Low power consumption - Compact SOIC-14 package for space-saving designs - Wide operating temperature range for various environments

Disadvantages: - Limited number of channels (4 channels) - Requires external components for complete RS-232 interface implementation

Working Principles

The MC1489DR2G is an RS-232 line driver/receiver integrated circuit. It operates by converting TTL/CMOS logic levels to RS-232 voltage levels and vice versa. The chip provides four independent receiver and transmitter channels, allowing bidirectional communication between TTL/CMOS logic circuits and RS-232 devices.

The input signals from the TTL/CMOS logic circuits are amplified and converted to RS-232 voltage levels suitable for long-distance transmission. On the other hand, the RS-232 signals received by the chip are converted back to TTL/CMOS logic levels for further processing by the connected logic circuits.

The MC1489DR2G ensures compatibility with EIA/TIA-232 and V.28 standards, making it suitable for a wide range of applications requiring reliable serial communication.

Detailed Application Field Plans

The MC1489DR2G finds applications in various fields where RS-232 communication is required. Some of the common application areas include:

1. Industrial Automation: Used for connecting PLCs (Programmable Logic Controllers) and other industrial equipment to computers or control systems.
2. Telecommunications: Enables communication between modems, routers, and other network devices.
3. Data Acquisition Systems: Facilitates data transfer between sensors, data loggers, and computer systems.
4. Embedded Systems: Integrates RS-232 communication in microcontroller-based projects for device control and monitoring.
5. Test and Measurement Equipment: Allows interfacing with instruments such as oscilloscopes, spectrum analyzers, and signal generators.

Detailed and Complete Alternative Models

1. MAX232 - Integrated circuit with dual RS-232 drivers/receivers
2. MAX3232 - Low-power RS-232 line driver/receiver with ±15kV ESD protection
3. LTC1480 - Low power RS-485 transceiver with integrated fail-safe receiver
4. SN75176 - Differential bus transceiver for RS-485/RS-422 applications
5. ADM3202 - RS-232 transceiver with 3.3V logic compatibility and shutdown mode

These alternative models offer similar functionality to the MC1489DR2G and can be considered based on specific application requirements.

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