Overview
The ADM222ARZ, produced by Analog Devices Inc., is a high-speed RS-232 line driver/receiver integrated circuit. This device operates from a single 5 V power supply and is fabricated using BiCMOS technology, which combines low power CMOS with high-speed bipolar circuitry. This allows for transmission rates up to 200 kB/s while minimizing power consumption. The ADM222ARZ is part of the ADM222/ADM232A/ADM242 family and is designed to meet all EIA-232-E and V.28 specifications.
Key Specifications
| Parameter | Value |
|---|---|
| Transmission Rate | Up to 200 kB/s |
| Power Supply | Single 5 V ± 10% |
| RS-232 Drivers/Receivers | 2 Drivers, 2 Receivers |
| Charge Pump Capacitors | 4 external 0.1 µF capacitors |
| Output Swing | ±10 V nominal |
| Receiver Input Levels | Down to ±3 V |
| Quiescent Power Supply Current | Under 5 mA |
| Technology | BiCMOS |
| Pin Compatibility | MAX222/MAX232A/MAX242 |
Key Features
- High-speed transmission rates up to 200 kB/s
- Single 5 V power supply with on-chip charge pump voltage doubler and inverter
- Small external capacitors (0.1 µF) required
- Meets all EIA-232-E and V.28 specifications
- Low power consumption with quiescent current under 5 mA
- Internal 400kΩ pull-up resistors on each TTL/CMOS input and internal 5kΩ pull-down resistors on each RS-232 input
- Active low digital inputs for enabling/disabling the device (SHDN) and receiver outputs (EN on ADM242)
Applications
- Computers and peripherals
- Modems
- Printers
- Instruments
Q & A
- What is the transmission rate of the ADM222ARZ?
The transmission rate of the ADM222ARZ is up to 200 kB/s. - What type of power supply does the ADM222ARZ require?
The ADM222ARZ operates from a single 5 V power supply. - How many RS-232 drivers and receivers are on the ADM222ARZ?
The ADM222ARZ has two RS-232 drivers and two RS-232 receivers. - What are the required external capacitors for the charge pump?
Four external 0.1 µF capacitors are required. - What are the output swing levels of the ADM222ARZ?
The output swing levels are ±10 V nominal. - What is the minimum receiver input level the ADM222ARZ can accept?
The minimum receiver input level is down to ±3 V. - What is the quiescent power supply current of the ADM222ARZ?
The quiescent power supply current is under 5 mA. - What technology is used in the fabrication of the ADM222ARZ?
The ADM222ARZ is fabricated using BiCMOS technology. - Is the ADM222ARZ pin-compatible with other devices?
Yes, it is pin-compatible with MAX222/MAX232A/MAX242. - What are the typical applications of the ADM222ARZ?
The typical applications include computers, peripherals, modems, printers, and instruments.
