Overview
The ADM211EARS-2REEL, produced by Analog Devices Inc., is a robust RS-232 line driver/receiver integrated circuit. This device operates from a single 5 V supply and is designed to provide reliable and high-speed data transmission in various electronic systems. It features a built-in voltage converter that generates the necessary RS-232 signal levels, making it suitable for applications where a single supply voltage is available. The ADM211E is part of the ADM206/ADM207/ADM208/ADM211/ADM213 family, known for their ruggedness and compliance with EIA-232-E and CCITT V.28 specifications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature | -40°C to +85°C | °C |
| Supply Voltage | 4.5 V to 5.5 V | V |
| Package Type | 28-SSOP | |
| Number of Drivers/Receivers | 4/5 | |
| Data Rate | Up to 120 kbps | kbps |
| Transmitter Propagation Delay | 0.5 μs to 5 μs | μs |
| Receiver Hysteresis | 0.65 V | V |
| ESD Protection (I/O Pins) | ±15 kV (Human Body Model), ±8 kV (IEC 1000-4-2 contact discharge) | kV |
| Shutdown Power Consumption | ≤ 5 μW | μW |
Key Features
- Single 5 V Supply Operation: The device operates from a single 5 V supply, using internal voltage converters to generate the necessary RS-232 signal levels.
- High Data Rates: Supports data transmission rates up to 120 kbps, exceeding the EIA-232-E specification.
- Low Power Consumption: Low power operation with a shutdown mode that reduces power consumption to ≤ 5 μW.
- ESD Protection: Provides protection against electrostatic discharges up to ±15 kV (Human Body Model) and ±8 kV (IEC 1000-4-2 contact discharge).
- Shutdown and Enable Control: Features shutdown and enable control pins to manage device operation and power consumption.
- High Noise Immunity: Includes 0.65 V of hysteresis on the receiver inputs to ensure error-free reception in noisy environments.
Applications
- Computers and Peripherals: Suitable for use in computer systems, peripherals, and other data communication equipment.
- Modems and Printers: Ideal for modem and printer applications where reliable RS-232 communication is required.
- Industrial Instruments: Used in industrial instruments and environments where high reliability and noise immunity are crucial.
- Automotive and Harsh Environments: Designed to operate in electrically harsh environments and where RS-232 cables are frequently unplugged.
Q & A
- What is the operating temperature range of the ADM211EARS-2REEL?
The operating temperature range is -40°C to +85°C.
- What is the supply voltage range for the ADM211EARS-2REEL?
The supply voltage range is 4.5 V to 5.5 V.
- How many drivers and receivers does the ADM211EARS-2REEL have?
The device has 4 drivers and 5 receivers.
- What is the maximum data rate supported by the ADM211EARS-2REEL?
The device supports data rates up to 120 kbps.
- What is the ESD protection level of the ADM211EARS-2REEL?
The device provides ESD protection up to ±15 kV (Human Body Model) and ±8 kV (IEC 1000-4-2 contact discharge).
- How does the shutdown mode affect the power consumption of the ADM211EARS-2REEL?
In shutdown mode, the power consumption is reduced to ≤ 5 μW.
- What is the purpose of the internal voltage converters in the ADM211EARS-2REEL?
The internal voltage converters generate the necessary RS-232 signal levels from a single 5 V supply.
- What is the significance of the 0.65 V hysteresis in the receiver inputs of the ADM211EARS-2REEL?
The 0.65 V hysteresis ensures high noise immunity and error-free reception in noisy environments.
- Can the ADM211EARS-2REEL be used in harsh electrical environments?
Yes, the device is designed to operate in electrically harsh environments and where RS-232 cables are frequently unplugged.
- What are some typical applications of the ADM211EARS-2REEL?
Typical applications include computers, peripherals, modems, printers, and industrial instruments.
