Overview
The MAX3243IPWRG4, 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 ±15kV ESD protection using the Human-Body Model (HBM) for serial-port connection pins, including GND. The MAX3243IPWRG4 meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards, ensuring reliable and robust serial communication.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Supply Voltage (VCC) | 3V to 5.5V | V |
| Operating Temperature Range | –40°C to 85°C (MAX3243I) | °C |
| Package Type | TSSOP (PW) | - |
| Number of Pins | 28 | - |
| Number of Drivers | 3 | - |
| Number of Receivers | 5 | - |
| Data Rate | Up to 250 kbit/s | kbit/s |
| Active Current | 300 µA (typical) | µA |
| Standby Current | 1 µA (typical) | µA |
| External Capacitors | 4 × 0.1 µF | µF |
| ESD Protection | ±15kV (HBM) | kV |
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
- Three drivers and five receivers
- Operates up to 250 kbit/s
- Low active current: 300 µA typical
- Low standby current: 1 µA typical
- External capacitors: 4 × 0.1 µF
- 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
- PDAs, notebooks, laptops, palmtop PCs, and hand-held equipment
- Tablets
- Any device requiring reliable and efficient RS-232 serial communication
Q & A
- What is the operating voltage range of the MAX3243IPWRG4?
The MAX3243IPWRG4 operates with a supply voltage (VCC) range of 3V to 5.5V.
- How many drivers and receivers does the MAX3243IPWRG4 have?
The device has three line drivers and five line receivers.
- What is the maximum data rate supported by the MAX3243IPWRG4?
The MAX3243IPWRG4 can operate at data rates up to 250 kbit/s.
- What kind of ESD protection does the MAX3243IPWRG4 offer?
The device offers ±15kV ESD protection using the Human-Body Model (HBM) for serial-port connection pins, including GND.
- What is the typical active current consumption of the MAX3243IPWRG4?
The typical active current consumption is 300 µA.
- Does the MAX3243IPWRG4 support 5V logic inputs with a 3.3V supply?
Yes, it accepts 5V logic inputs with a 3.3V supply.
- What is the purpose of the auto-powerdown feature in the MAX3243IPWRG4?
The auto-powerdown feature disables the driver outputs when no valid RS-232 signal is sensed, helping to conserve power.
- What type of package does the MAX3243IPWRG4 come in?
The device comes in a TSSOP (PW) package with 28 pins.
- What is the operating temperature range for the MAX3243I version?
The operating temperature range for the MAX3243I version is –40°C to 85°C.
- Does the MAX3243IPWRG4 support serial-mouse driveability?
Yes, the device supports serial-mouse driveability.
- How many external capacitors are required for the MAX3243IPWRG4?
The device requires four external capacitors, each 0.1 µF.
