Overview
The MAX3243EIPWE4, 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 applications requiring a robust and efficient serial communication interface.
The MAX3243EIPWE4 meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards, ensuring compatibility with a wide range of serial communication protocols. It features three line drivers and five line receivers, along with a dual charge-pump circuit that enables operation from a single supply voltage.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage Range | -0.3 | 6 | V | |
| Operating Free-Air Temperature (MAX3243EC) | 0 | 70 | °C | |
| Operating Free-Air Temperature (MAX3243EI) | -40 | 85 | °C | |
| Driver Output Voltage (VOH) | 5 | 5.4 | V | |
| Driver Output Voltage (VOL) | -5 | -5.4 | V | |
| Maximum Data Rate | 150 | 250 | kbit/s | |
| Active Current | 300 | μA | ||
| Standby Current | 1 | μA |
Key Features
- Operates with 3V to 5.5V VCC supply.
- Single-chip and single-supply interface for IBM PC/AT serial ports.
- RS-232 bus-pin ESD protection of ±15kV using Human-Body Model (HBM) and ±8kV using IEC61000-4-2 standards.
- Three line drivers and five line receivers.
- Always-active noninverting receiver output (ROUT2B) for ring indicator applications.
- Auto-powerdown feature to disable driver outputs when no valid RS-232 signal is sensed.
- Accepts 5V logic input with 3.3V supply.
- Serial-mouse driveability.
- Low active current: 300μA typical, and low standby current: 1μA typical.
Applications
- Battery-powered systems.
- Notebooks and laptops.
- Hand-held equipment.
- Palmtop PCs.
- Wired networking.
- Data center and enterprise computing.
Q & A
- What is the operating voltage range of the MAX3243EIPWE4?
The MAX3243EIPWE4 operates with a VCC supply voltage range of 3V to 5.5V.
- How many line drivers and receivers does the MAX3243EIPWE4 have?
The device features three line drivers and five line receivers.
- What is the maximum data rate supported by the MAX3243EIPWE4?
The device supports data signaling rates up to 250 kbit/s.
- Does the MAX3243EIPWE4 have ESD protection?
Yes, it has RS-232 bus-pin ESD protection of ±15kV using Human-Body Model (HBM) and ±8kV using IEC61000-4-2 standards.
- What is the auto-powerdown feature in the MAX3243EIPWE4?
The auto-powerdown feature disables driver outputs when no valid RS-232 signal is sensed, helping to save power.
- Can the MAX3243EIPWE4 accept 5V logic input with a 3.3V supply?
Yes, it can accept 5V logic input with a 3.3V supply.
- What are the typical active and standby currents of the MAX3243EIPWE4?
The typical active current is 300μA, and the typical standby current is 1μA.
- What are the operating temperature ranges for the MAX3243EC and MAX3243EI?
The MAX3243EC operates from 0°C to 70°C, and the MAX3243EI operates from –40°C to 85°C.
- What types of packages are available for the MAX3243EIPWE4?
The device is available in SSOP, SOIC, and TSSOP packages.
- Does the MAX3243EIPWE4 support serial-mouse driveability?
Yes, it supports serial-mouse driveability.
