Overview
The MAX3222IDBRE4, produced by Texas Instruments, is a 3-V to 5.5-V multichannel RS-232 line driver and receiver. This device is designed to provide the electrical interface between an asynchronous communication controller and the serial-port connector, adhering to the TIA/EIA-232-F and ITU v.28 standards. It features a dual charge-pump circuit that allows operation from a single 3-V to 5.5-V supply, along with ±15-kV ESD protection on serial-port connection pins, including GND. The MAX3222IDBRE4 includes two line drivers and two line receivers, making it suitable for various applications requiring reliable serial communication.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | -0.3 | - | 6 | V |
| Positive Output Supply Voltage (V+) | -0.3 | - | 7 | V |
| Negative Output Supply Voltage (V-) | 0.3 | - | -7 | V |
| Input Voltage (VI) | -0.3 | - | 6 | V |
| Data Signaling Rate | - | - | 250 kbps | - |
| Driver Output Slew Rate | - | - | 30 V/μs | - |
| Standby Current | - | 1 μA | - | - |
| Package Type | - | SSOP (20 pins) | - | - |
| Body Size (Nominal) | - | 7.20 mm × 5.30 mm | - | - |
Key Features
- RS-232 bus-pin ESD protection exceeds ±15 kV using Human-Body Model (HBM)
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards
- Operates with 3-V to 5.5-V VCC supply
- Operates up to 250 kbps data signaling rate
- Two drivers and two receivers
- Low standby current: 1 μA typical
- External capacitors: 4 × 0.1 μF
- Accepts 5-V logic input with 3.3-V supply
- Power-down mode with drivers in high-impedance state and receivers active
Applications
- Battery-powered systems
- PDAs
- Notebooks
- Laptops
- Palmtop PCs
- Hand-held equipment
Q & A
- What is the operating voltage range of the MAX3222IDBRE4? The MAX3222IDBRE4 operates with a supply voltage (VCC) ranging from 3 V to 5.5 V.
- What is the data signaling rate of the MAX3222IDBRE4? The device operates at data signaling rates up to 250 kbps.
- How many drivers and receivers does the MAX3222IDBRE4 have? The MAX3222IDBRE4 includes two line drivers and two line receivers.
- What is the ESD protection level of the MAX3222IDBRE4? The device has ±15-kV ESD protection using the Human-Body Model (HBM).
- How does the power-down mode affect the drivers and receivers? In power-down mode, the drivers are placed in the high-impedance state, while the receivers remain active.
- What type of package is the MAX3222IDBRE4 available in? The MAX3222IDBRE4 is available in a 20-pin SSOP package.
- What are the dimensions of the SSOP package? The SSOP package has nominal dimensions of 7.20 mm × 5.30 mm.
- What is the typical standby current of the MAX3222IDBRE4? The typical standby current is 1 μA.
- Can the MAX3222IDBRE4 accept 5-V logic input with a 3.3-V supply? Yes, the device can accept 5-V logic input with a 3.3-V supply.
- What standards does the MAX3222IDBRE4 comply with? The device meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards.
