Overview
The ADM222AR-REEL, produced by Analog Devices Inc., is a high-speed RS-232 line driver/receiver integrated circuit. It belongs to the ADM222, ADM232A, and ADM242 family, which offers transmission rates up to 200 kB/s. This device operates from a single 5 V power supply and utilizes an advanced BiCMOS process, combining low power CMOS with high-speed bipolar circuitry. This technology enables high transmission rates while minimizing power consumption, with a quiescent power supply current of under 5 mA. The ADM222AR-REEL is designed to meet the RS-232 standard, generating bipolar levels of ±10 V from the 5 V input using an internal charge pump voltage doubler and inverter.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Drivers/Receivers | 2 Drivers, 2 Receivers |
| Protocol | RS-232 |
| Data Rate | Up to 200 kB/s |
| Supply Voltage | 4.5 V to 5.5 V |
| Operating Temperature | -40°C to 85°C |
| Package/Case | 18-SOIC (0.295", 7.50mm Width) |
| Mounting Type | Surface Mount |
| Receiver Hysteresis | 400 mV |
| RoHS Compliance | Yes (for some variants) |
Key Features
- High-speed transmission rates up to 200 kB/s
- Single 5 V power supply with internal charge pump voltage doubler and inverter to generate ±10 V bipolar levels
- Low power consumption with quiescent current under 5 mA
- BiCMOS technology combining low power CMOS with high-speed bipolar circuitry
- Two RS-232 drivers and two RS-232 receivers
- Internal 400 kΩ pull-up resistors on TTL/CMOS inputs and 5 kΩ pull-down resistors on RS-232 inputs
- Active low shutdown (SHDN) input to minimize power consumption
- Active low enable (EN) input for receiver outputs (on ADM242 only)
Applications
- Computers and peripherals
- Modems
- Printers
- Instruments
Q & A
- What is the maximum data rate of the ADM222AR-REEL? The maximum data rate is up to 200 kB/s.
- What is the operating voltage range of the ADM222AR-REEL? The operating voltage range is 4.5 V to 5.5 V.
- How many drivers and receivers does the ADM222AR-REEL have? It has 2 drivers and 2 receivers.
- What is the operating temperature range of the ADM222AR-REEL? The operating temperature range is -40°C to 85°C.
- What package type is the ADM222AR-REEL available in? It is available in an 18-SOIC package.
- Is the ADM222AR-REEL RoHS compliant? Yes, some variants of the ADM222AR-REEL are RoHS compliant.
- What technology is used in the ADM222AR-REEL? It uses BiCMOS technology, combining low power CMOS with high-speed bipolar circuitry.
- How does the ADM222AR-REEL generate RS-232 bipolar levels? It generates bipolar levels using an internal charge pump voltage doubler and inverter from the 5 V input.
- What is the purpose of the SHDN input on the ADM222AR-REEL? The SHDN input is used to disable the device and minimize power consumption.
- What is the receiver hysteresis of the ADM222AR-REEL? The receiver hysteresis is 400 mV.
