Overview
The ADM208EAN from Analog Devices Inc. is a line transceiver IC designed to facilitate communication in RS-232 applications. This device is part of the ADM2xx family, known for its robust performance and compatibility with earlier versions, making it an ideal choice for upgrading existing designs. The ADM208EAN operates within a wide temperature range and offers comprehensive protection against electrical transients, ensuring reliable operation in various environments.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Brand | Analog Devices | ||
| IC Type | Line Transceiver IC | ||
| Input Type | Single Ended | ||
| Number of Transmitters | 4 | ||
| Number of Receivers | 4 | ||
| Mounting Type | Through Hole | ||
| Package Type | PDIP | ||
| Pin Count | 24 | ||
| Minimum Operating Temperature | -40°C | °C | |
| Maximum Operating Temperature | +85°C | °C | |
| Dimensions | 31.75 x 6.35 x 3.3 mm | mm | |
| Supply Voltage Range | 4.5 to 5.5 V | V | VCC |
| Power Supply Current | 3.5 to 13 mA | mA | No load |
| Shutdown Supply Current | 0.2 to 10 μA | μA | |
| Input Logic Threshold Low | 0.8 V | V | TIN = GND |
| Input Logic Threshold High | 2.0 V | V | TIN, EN, SHDN |
| TTL/CMOS Output Voltage Low | 0.4 V | V | IOUT = 1.6 mA |
| TTL/CMOS Output Voltage High | 3.5 V | V | |
| ESD Rating | ±15 kV (Air-Gap), ±8 kV (Contact) | kV | IEC 1000-4-2 |
Key Features
- Compliance with RS-232 Standards: The ADM208EAN is designed to meet the requirements of the RS-232 standard, ensuring compatibility with a wide range of serial communication applications.
- ESD Protection: The device features robust ESD protection to IEC 1000-4-2 standards, with ±15 kV air-gap discharge and ±8 kV contact discharge, enhancing reliability in harsh environments.
- Charge Pump Voltage Converter: An internal charge pump generates the necessary ±10 V supply from a 5 V input, using a switched capacitor technique to minimize ripple and ensure stable operation.
- Transient Protection: All I/O lines are protected against electrical transients, including ESD and EFT, to prevent damage and ensure continuous operation.
- Backward Compatibility: The ADM208EAN is backward compatible with earlier ADM2xx products, making it easy to upgrade existing designs without significant changes.
Applications
- Serial Communication Systems: Ideal for use in RS-232 serial communication systems, including industrial control, medical devices, and point-of-sale terminals.
- Embedded Systems: Suitable for embedded systems that require reliable serial communication interfaces.
- Industrial Automation: Used in industrial automation for communication between devices and control systems.
- Telecommunications: Applied in telecommunications equipment for serial data transmission.
Q & A
- What is the operating temperature range of the ADM208EAN?
The operating temperature range is -40°C to +85°C.
- How many transmitters and receivers does the ADM208EAN have?
The device has 4 transmitters and 4 receivers.
- What type of package does the ADM208EAN come in?
The ADM208EAN is available in a 24-lead PDIP package.
- What is the supply voltage range for the ADM208EAN?
The supply voltage range is 4.5 V to 5.5 V.
- Does the ADM208EAN have ESD protection?
Yes, it has ESD protection to IEC 1000-4-2 standards, with ±15 kV air-gap discharge and ±8 kV contact discharge.
- How does the ADM208EAN generate the necessary voltage for RS-232 operation?
The device uses an internal charge pump voltage converter to generate the necessary ±10 V supply from a 5 V input.
- Is the ADM208EAN backward compatible with earlier ADM2xx products?
Yes, it is backward compatible, making it easy to upgrade existing designs.
- What are the typical applications of the ADM208EAN?
It is used in serial communication systems, embedded systems, industrial automation, and telecommunications.
- What is the shutdown supply current of the ADM208EAN?
The shutdown supply current is 0.2 to 10 μA.
- What are the dimensions of the ADM208EAN in the PDIP package?
The dimensions are 31.75 x 6.35 x 3.3 mm.
