Overview
The MAX3243ECPWG4 is a multichannel RS-232 line driver and receiver produced by Texas Instruments. This device is designed to provide a single-chip and single-supply interface for IBM PC/AT serial ports, operating within a voltage range of 3V to 5.5V. It features three line drivers and five line receivers, making it ideal for applications requiring a DE-9 DTE interface. The MAX3243ECPWG4 includes a dual charge-pump circuit and offers ±15kV ESD protection using the Human-Body Model (HBM) and IEC61000-4-2 standards for serial-port connection pins. This device meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage Range | -0.3 | - | 6 | V |
| Operating Free-Air Temperature (MAX3243C) | 0 | - | 70 | °C |
| Operating Free-Air Temperature (MAX3243I) | -40 | - | 85 | °C |
| High-Level Output Voltage (VOH) | 5 | 5.4 | - | V |
| Low-Level Output Voltage (VOL) | -5 | -5.4 | - | V |
| Maximum Data Rate | - | 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 port
- RS-232 Bus-pin ESD protection of ±15kV using Human-Body Model (HBM) and IEC61000-4-2 standards
- Three line drivers and five line receivers
- Operates up to 250kbit/s data rate
- Low active current: 300μA typical, and low standby current: 1μA typical
- 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
- Notebooks and laptops
- Hand-held equipment
- Wired networking
- Data center and enterprise computing
- Palmtop PCs
Q & A
- What is the operating voltage range of the MAX3243ECPWG4?
The MAX3243ECPWG4 operates within a voltage range of 3V to 5.5V.
- How many line drivers and receivers does the MAX3243ECPWG4 have?
The device features three line drivers and five line receivers.
- What is the maximum data rate supported by the MAX3243ECPWG4?
The device supports data rates up to 250 kbit/s.
- What kind of ESD protection does the MAX3243ECPWG4 offer?
The device offers ±15kV ESD protection using the Human-Body Model (HBM) and IEC61000-4-2 standards.
- Does the MAX3243ECPWG4 support auto-powerdown?
- What are the typical operating temperatures for the MAX3243ECPWG4?
The MAX3243C operates from 0°C to 70°C, and the MAX3243I operates from –40°C to 85°C.
- Can the MAX3243ECPWG4 accept 5V logic input with a 3.3V supply?
- What is the purpose of the always-active noninverting receiver output (ROUT2B)?
The always-active noninverting receiver output (ROUT2B) allows applications using the ring indicator to transmit data while the device is powered down.
- What are some common applications for the MAX3243ECPWG4?
- What is the typical active current consumption of the MAX3243ECPWG4?
