Overview
The MAX3243IPWRE4, produced by Texas Instruments, is a 3V to 5.5V multichannel RS-232 line driver and receiver. This device is designed to provide a single-chip and single-supply interface for IBM™ PC/AT™ serial ports, making it ideal for DE-9 DTE interfaces. It features three line drivers and five line receivers, along with robust ESD protection and low power consumption. The MAX3243 is well-suited for applications requiring reliable and efficient serial communication.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage (VCC) | 3V to 5.5V |
| Operating Temperature Range | MAX3243C: 0°C to 70°C, MAX3243I: –40°C to 85°C |
| Number of Drivers | 3 |
| Number of Receivers | 5 |
| Data Rate | Up to 250kbit/s |
| Active Current | 300µA typical |
| Standby Current | 1µA typical |
| ESD Protection | ±15kV (HBM) |
| Package Type | TSSOP (28 pins) |
| Package Size | 9.7mm × 6.4mm |
Key Features
- Operates with 3V to 5.5V VCC supply
- Single-chip and single-supply interface for IBM™ PC/AT™ serial port
- RS-232 Bus-pin ESD protection of ±15kV using Human-Body Model (HBM)
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards
- Low active current: 300µA typical, low standby current: 1µA typical
- External capacitors: 4 × 0.1µF required
- Accepts 5V logic input with 3.3V supply
- Always-active noninverting receiver output (ROUT2B)
- Auto-powerdown feature to disable driver outputs when no valid RS-232 signal is sensed
- Serial-mouse driveability
Applications
- Battery-powered systems
- Tablets
- Notebooks
- Laptops
- Hand-held equipment
Q & A
- What is the operating voltage range of the MAX3243?
The MAX3243 operates with a VCC supply of 3V to 5.5V. - How many line drivers and receivers does the MAX3243 have?
The MAX3243 has three line drivers and five line receivers. - What is the maximum data rate supported by the MAX3243?
The MAX3243 supports data rates up to 250kbit/s. - What kind of ESD protection does the MAX3243 offer?
The MAX3243 offers ±15kV ESD protection using the Human-Body Model (HBM). - What is the typical active current of the MAX3243?
The typical active current of the MAX3243 is 300µA. - Does the MAX3243 support 5V logic input with a 3.3V supply?
Yes, the MAX3243 accepts 5V logic input with a 3.3V supply. - What is the purpose of the auto-powerdown feature in the MAX3243?
The auto-powerdown feature disables the driver outputs when no valid RS-232 signal is sensed, helping to save power. - Is the MAX3243 suitable for serial-mouse applications?
Yes, the MAX3243 is suitable for serial-mouse driveability. - What are the typical operating temperature ranges for the MAX3243?
The MAX3243C operates from 0°C to 70°C, and the MAX3243I operates from –40°C to 85°C. - What type of package is the MAX3243IPWRE4 available in?
The MAX3243IPWRE4 is available in a TSSOP (28 pins) package.
