MC1489AMG

Product Overview

Category: Integrated Circuit (IC)

Use: The MC1489AMG is a quad line receiver IC that is commonly used in electronic communication systems. It is designed to receive and convert RS-232 signals into TTL/CMOS logic levels.

Characteristics: - Quad line receiver - Converts RS-232 signals to TTL/CMOS logic levels - High input impedance - Wide operating voltage range - Low power consumption

Package: The MC1489AMG is available in a 14-pin dual in-line package (DIP).

Essence: The essence of the MC1489AMG lies in its ability to interface between RS-232 and TTL/CMOS logic levels, allowing for seamless communication between devices operating at different voltage levels.

Packaging/Quantity: The MC1489AMG is typically sold in reels or tubes containing multiple units per package.

Specifications

• Supply Voltage Range: +4.5V to +5.5V
• Input Voltage Range: -30V to +30V
• Operating Temperature Range: -40°C to +85°C
• Maximum Data Rate: 120 kbps
• Input Impedance: 3 kΩ
• Output Current: ±10 mA

Pin Configuration

The MC1489AMG has a total of 14 pins, which are assigned specific functions as follows:

1. VCC - Positive supply voltage
2. A - Receiver input A
3. B - Receiver input B
4. C - Receiver input C
5. D - Receiver input D
6. GND - Ground
7. Y - Logic level output Y for input A
8. Z - Logic level output Z for input A
9. AA - Logic level output Y for input B
10. BB - Logic level output Z for input B
11. CC - Logic level output Y for input C
12. DD - Logic level output Z for input C
13. EE - Logic level output Y for input D
14. FF - Logic level output Z for input D

Functional Features

• High input impedance allows for easy integration into various systems.
• Wide operating voltage range enables compatibility with different power supply configurations.
• Low power consumption makes it suitable for battery-powered devices.
• The quad line receiver design allows for simultaneous reception of multiple RS-232 signals.

Advantages and Disadvantages

Advantages: - Easy interface between RS-232 and TTL/CMOS logic levels. - High input impedance minimizes signal degradation. - Wide operating voltage range provides flexibility in system design. - Low power consumption prolongs battery life.

Disadvantages: - Limited maximum data rate compared to some other line receiver ICs. - Requires external components for complete RS-232 signal conversion.

Working Principles

The MC1489AMG operates by receiving RS-232 signals through its input pins (A, B, C, and D) and converting them into corresponding TTL/CMOS logic levels. The converted logic levels are then available at the respective output pins (Y, Z, AA, BB, CC, DD, EE, and FF). The high input impedance ensures minimal loading on the RS-232 source, while the wide operating voltage range allows for compatibility with various systems.

Detailed Application Field Plans

The MC1489AMG finds applications in a wide range of electronic communication systems, including but not limited to: - Serial data communication interfaces - Industrial automation systems - Telecommunication equipment - Computer peripherals - Embedded systems

Alternative Models

For those seeking alternative options, the following line receiver ICs can be considered as substitutes for the MC1489AMG: - MAX232 - LTC1489 - SN75189

These alternative models offer similar functionality and can be used as drop-in replacements in many applications.

In conclusion, the MC1489AMG is a quad line receiver IC that facilitates the conversion of RS-232 signals to TTL/CMOS logic levels. Its high input impedance, wide operating voltage range, and low power consumption make it suitable for various communication systems. While it has some limitations in terms of data rate and external component requirements, it remains a popular choice in many electronic applications.