Overview
The MAX222IDWRG4, produced by Texas Instruments, is a dual-channel RS-232 line driver/receiver integrated circuit. This device is designed to provide the electrical interface between an asynchronous communication controller and a serial-port connector. It features two line drivers, two line receivers, and a dual charge-pump circuit, enabling operation from a single 5-V supply. The MAX222IDWRG4 is notable for its ±15-kV ESD protection on RS-232 bus pins, making it robust against electrostatic discharges. It meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards, ensuring reliable communication at data signaling rates up to 200 kbit/s.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.5 | 5 | 5.5 | V |
| Operating Temperature (TA) | −40 | 85 | °C | |
| Supply Current (ICC) - No Load | 4 | 10 | 15 | mA |
| Shutdown Supply Current | 2 | 50 | µA | |
| Driver Output Voltage (VOH/VOL) | 5 / -5 | 8 / -8 | V | |
| Data Signaling Rate | 200 | kbit/s | ||
| Driver Output Slew Rate | 30 | V/µs | ||
| ESD Protection | ±15 | kV |
Key Features
- Operates at 5-V VCC supply.
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards.
- ±15-kV ESD protection on RS-232 bus pins.
- Operates up to 200 kbit/s data signaling rate.
- Low supply current in shutdown mode: 2 µA typical.
- External capacitors: 4 × 0.1 µF required.
- Latch-up performance exceeds 100 mA per JESD 78, Class II.
- Ability to disable all receivers using the SHDN pin.
Applications
- Battery-powered systems.
- PDAs, notebooks, laptops, palmtop PCs, and hand-held equipment.
Q & A
- What is the MAX222IDWRG4 used for?
The MAX222IDWRG4 is used to provide the electrical interface between an asynchronous communication controller and a serial-port connector, adhering to RS-232 standards.
- What is the operating voltage of the MAX222IDWRG4?
The MAX222IDWRG4 operates at a 5-V VCC supply.
- What level of ESD protection does the MAX222IDWRG4 offer?
The MAX222IDWRG4 offers ±15-kV ESD protection on RS-232 bus pins.
- What is the maximum data signaling rate of the MAX222IDWRG4?
The MAX222IDWRG4 can operate at data signaling rates up to 200 kbit/s.
- How much current does the MAX222IDWRG4 consume in shutdown mode?
The MAX222IDWRG4 consumes 2 µA typical in shutdown mode.
- What type of capacitors are required for the MAX222IDWRG4?
The MAX222IDWRG4 requires four 0.1 µF external capacitors.
- Can the receivers of the MAX222IDWRG4 be disabled?
Yes, all receivers can be disabled using the SHDN pin.
- What are the typical applications of the MAX222IDWRG4?
The MAX222IDWRG4 is typically used in battery-powered systems, PDAs, notebooks, laptops, palmtop PCs, and hand-held equipment.
- Does the MAX222IDWRG4 meet any specific standards?
Yes, the MAX222IDWRG4 meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards.
- What is the operating temperature range of the MAX222IDWRG4?
The MAX222IDWRG4 operates over a temperature range of −40°C to 85°C.
