Overview
The ADM222ARZ-REEL, produced by Analog Devices Inc., is a high-speed RS-232 line driver/receiver integrated circuit. This device is part of the ADM222, ADM232A, and ADM242 family, known for their high transmission rates and low power consumption. The ADM222ARZ-REEL operates from a single 5 V power supply and is fabricated using BiCMOS technology, combining the benefits of low-power CMOS and high-speed bipolar circuitry. This allows for transmission rates up to 200 kB/s while minimizing quiescent power supply current to under 5 mA.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V |
| No. of Drivers | 2 |
| No. of Receivers | 2 |
| Transmission Rate | Up to 200 kB/s |
| Package Type | 18-Pin SOIC W |
| Operating Temperature | Typically -40°C to 85°C |
| RS-232 Voltage Levels | ±10 V nominal |
| External Capacitors Required | Four 0.1 µF capacitors |
| RoHS Compliance | Yes |
Key Features
- High-speed RS-232 transmission rates up to 200 kB/s
- Single 5 V power supply with on-chip charge pump voltage doubler and inverter
- Low quiescent power supply current (< 5 mA)
- BiCMOS technology for low power and high speed
- Internal 400 kΩ pull-up resistors on TTL/CMOS inputs and 5 kΩ pull-down resistors on RS-232 inputs
- Shutdown (SHDN) and Enable (EN) pins for power management and output control
- Pin compatibility with MAX222/MAX232A/MAX242
Applications
- Computers and peripherals
- Modems
- Printers
- Instruments and industrial control systems
Q & A
- What is the maximum transmission rate of the ADM222ARZ-REEL? The maximum transmission rate is up to 200 kB/s.
- What type of power supply does the ADM222ARZ-REEL require? It operates from a single 5 V power supply.
- How many RS-232 drivers and receivers are included in the ADM222ARZ-REEL? The device includes two RS-232 drivers and two RS-232 receivers.
- What technology is used in the fabrication of the ADM222ARZ-REEL? It is fabricated using BiCMOS technology.
- What is the purpose of the internal charge pump voltage doubler and inverter? These components generate ±10 V from the 5 V input to meet RS-232 bipolar level requirements.
- How many external capacitors are required for the ADM222ARZ-REEL? Four 0.1 µF external capacitors are required.
- Is the ADM222ARZ-REEL RoHS compliant? Yes, it is RoHS compliant.
- What are the typical operating temperature ranges for the ADM222ARZ-REEL? The typical operating temperature range is -40°C to 85°C.
- What is the function of the SHDN and EN pins? The SHDN pin is used to disable the device for power minimization, and the EN pin (on ADM242) is used to enable or disable the receiver outputs.
- Is the ADM222ARZ-REEL pin-compatible with other devices? Yes, it is pin-compatible with MAX222/MAX232A/MAX242.
