ICL3227EIAZA

Product Overview

Category: Integrated Circuit (IC)

Use: The ICL3227EIAZA is a high-speed, low-power, 3.3V RS-232 transceiver IC. It is designed to facilitate bidirectional data transfer between a microcontroller or other logic-level devices and an RS-232 communication interface.

Characteristics: - High-speed operation: Supports data rates up to 1Mbps. - Low power consumption: Designed for energy-efficient applications. - Wide supply voltage range: Operates from 3.0V to 5.5V. - ESD protection: Provides robust protection against electrostatic discharge. - Small package size: Available in a compact 20-pin SSOP package.

Package and Quantity: The ICL3227EIAZA is available in a 20-pin SSOP package. It is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 3.0V to 5.5V
• Data Rate: Up to 1Mbps
• Operating Temperature Range: -40°C to +85°C
• Number of Channels: 2 (Transmit and Receive)
• Logic Voltage Levels: 3.3V
• ESD Protection: ±15kV (Human Body Model)
• Package Type: 20-pin SSOP

Pin Configuration

The ICL3227EIAZA has a total of 20 pins, each serving a specific function. The pin configuration is as follows:

Pin 1: VCC Pin 2: GND Pin 3: T1OUT Pin 4: R1IN Pin 5: R1OUT Pin 6: T1IN Pin 7: SHDN Pin 8: NC Pin 9: NC Pin 10: NC Pin 11: NC Pin 12: NC Pin 13: R2OUT Pin 14: T2IN Pin 15: R2IN Pin 16: T2OUT Pin 17: C1- Pin 18: C1+ Pin 19: C2+ Pin 20: C2-

Functional Features

• Bidirectional Communication: The ICL3227EIAZA enables bidirectional data transfer between a microcontroller or logic-level device and an RS-232 interface.
• Automatic Power-Down: The SHDN pin allows for automatic power-down when the device is not in use, reducing power consumption.
• ESD Protection: The IC provides robust protection against electrostatic discharge, ensuring reliable operation in harsh environments.
• Wide Supply Voltage Range: The device operates over a wide supply voltage range, making it suitable for various applications.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer. - Low power consumption makes it suitable for energy-efficient designs. - ESD protection ensures reliability in challenging environments. - Wide supply voltage range enhances versatility.

Disadvantages: - Limited to RS-232 communication interface compatibility. - Requires additional level shifting components for interfacing with different voltage levels.

Working Principles

The ICL3227EIAZA operates by converting logic-level signals from a microcontroller or other devices into RS-232 compatible voltage levels. It uses internal charge pumps to generate the required voltage levels for RS-232 communication. The transceiver facilitates bidirectional data transfer by converting TTL/CMOS logic levels to RS-232 voltage levels and vice versa.

Application Field Plans

The ICL3227EIAZA finds applications in various fields where bidirectional communication between microcontrollers or logic-level devices and RS-232 interfaces is required. Some potential application areas include:

1. Industrial Automation: Used in PLCs (Programmable Logic Controllers) for communication with RS-232 devices such as HMIs (Human Machine Interfaces).
2. Networking Equipment: Enables RS-232 connectivity in routers, switches, and network servers.
3. Point-of-Sale Systems: Facilitates communication between POS terminals and peripherals like barcode scanners or receipt printers.
4. Medical Devices: Allows microcontrollers in medical equipment to communicate with RS-232 enabled devices like patient monitors or diagnostic instruments.

Alternative Models

Here are some alternative models that offer similar functionality to the ICL3227EIAZA:

1. MAX3232CSE: Manufactured by Maxim Integrated, this IC also provides bidirectional RS-232 communication and operates at 3.3V logic levels.
2. SP3232EEN-L/TR: Produced by Exar Corporation, this transceiver offers ESD protection and supports data rates up to 250kbps.
3. ADM3202ARNZ: An alternative from Analog Devices, this IC features a wide supply voltage range and supports data rates up