Overview
The ADM211EARU is a robust RS-232 transceiver produced by Analog Devices Inc., designed to facilitate full duplex communication. This device is part of the ADM2xx family of line drivers/receivers, which are intended for EIA-232-E and V.28 communications interfaces. It operates from a single 5 V supply and includes internal charge pump voltage converters that generate the ±10 V required for RS-232 output levels. The ADM211EARU is particularly useful in applications where ±12 V is not available and is well-suited for battery-powered equipment due to its low power shutdown mode.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Drivers/Receivers | 4/5 |
| Duplex Mode | Full |
| Receiver Hysteresis | 650 mV |
| Data Rate | Up to 120 Kbps |
| Voltage Supply | 4.5 V ~ 5.5 V |
| Operating Temperature | -40°C ~ 85°C |
| Package/Case | 28-SSOP (Surface Mount) |
| ESD Protection (I/O Pins) | ±15 kV Human body model, ±15 kV IEC 1000-4-2 air-gap discharge, ±8 kV IEC 1000-4-2 contact discharge |
| Radiated Immunity | 10 V/m IEC 1000-4-3 |
Key Features
- Full duplex RS-232 transceiver with 4 drivers and 5 receivers.
- Operates from a single 5 V supply with internal charge pump voltage converters generating ±10 V for RS-232 output levels.
- Low power consumption (15 mW) and low power shutdown mode (≤ 5 μW).
- High data integrity with robust receiver hysteresis of 650 mV.
- Internal 400 kΩ pull-up resistors on TTL/CMOS inputs and 5 kΩ pull-down resistors on RS-232 inputs.
- Shutdown and enable control pins for power management and receiver output control.
- Latch-up free and pin compatible to MAX206-211/213.
Applications
- Computers and peripherals.
- Modems and printers.
- Instruments and other communication equipment.
- Battery-powered systems due to low power shutdown mode.
Q & A
- What is the primary function of the ADM211EARU? The ADM211EARU is a full duplex RS-232 transceiver designed for EIA-232-E and V.28 communications interfaces.
- What is the operating voltage range of the ADM211EARU? The device operates from a single 5 V supply with a voltage range of 4.5 V ~ 5.5 V.
- How many drivers and receivers does the ADM211EARU have? The ADM211EARU has 4 drivers and 5 receivers.
- What is the maximum data rate supported by the ADM211EARU? The maximum data rate supported is up to 120 Kbps.
- What is the operating temperature range of the ADM211EARU? The operating temperature range is -40°C ~ 85°C.
- Does the ADM211EARU have ESD protection? Yes, it has ESD protection of ±15 kV Human body model, ±15 kV IEC 1000-4-2 air-gap discharge, and ±8 kV IEC 1000-4-2 contact discharge.
- What is the purpose of the shutdown and enable control pins? These pins are used for power management and to control the receiver outputs, allowing the device to be shut down until a peripheral device begins communication.
- Is the ADM211EARU suitable for battery-powered equipment? Yes, it is particularly suited for battery-powered systems due to its low power shutdown mode.
- What type of package does the ADM211EARU come in? The device comes in a 28-SSOP (Surface Mount) package.
- Does the ADM211EARU have internal pull-up and pull-down resistors? Yes, it has internal 400 kΩ pull-up resistors on TTL/CMOS inputs and 5 kΩ pull-down resistors on RS-232 inputs.
