Overview
The MAX3243ECPW, produced by Texas Instruments, is a 3-V to 5.5-V multichannel RS-232 line driver/receiver designed for single-chip and single-supply interface applications, particularly for IBM PC/AT serial ports. This device integrates three line drivers and five line receivers, making it ideal for DE-9 DTE interfaces. It features robust ESD protection, meeting or exceeding the requirements of TIA/EIA-232-F and ITU V.28 standards. The MAX3243ECPW operates with a wide supply voltage range and includes an auto-powerdown feature to conserve power when no valid RS-232 signal is detected.
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 Data Rate | - | - | 250 kbit/s | - |
| ESD Protection (HBM) | - | - | ±15 kV | - |
| ESD Protection (IEC61000-4-2, Contact Discharge) | - | - | ±8 kV | - |
| ESD Protection (IEC61000-4-2, Air-Gap Discharge) | - | - | ±15 kV | - |
| Standby Current | - | 1 μA | - | - |
| External Capacitors | - | 4 × 0.1 μF | - | - |
Key Features
- Operates with a 3-V to 5.5-V VCC supply.
- Single-chip and single-supply interface for IBM PC/AT serial ports.
- Robust ESD protection: ±15-kV HBM, ±8-kV IEC61000-4-2 contact discharge, and ±15-kV IEC61000-4-2 air-gap discharge.
- Meets or exceeds TIA/EIA-232-F and ITU V.28 standards.
- Three line drivers and five line receivers.
- Data rate up to 250 kbit/s.
- Low active current: 300 μA typical, and low standby current: 1 μA typical.
- Always-active noninverting receiver output (ROUT2B).
- Auto-powerdown feature to disable driver outputs when no valid RS-232 signal is sensed.
- Accepts 5-V logic input with a 3.3-V supply.
- Serial-mouse driveability.
Applications
- Battery-powered systems.
- Wired networking.
- Data center and enterprise computing.
- Notebooks and laptops.
- Hand-held equipment and palmtop PCs.
- Tablets.
Q & A
- What is the operating voltage range of the MAX3243ECPW?
The MAX3243ECPW operates with a 3-V to 5.5-V VCC supply.
- What level of ESD protection does the MAX3243ECPW offer?
The device offers ±15-kV HBM, ±8-kV IEC61000-4-2 contact discharge, and ±15-kV IEC61000-4-2 air-gap discharge ESD protection.
- What are the key standards that the MAX3243ECPW meets or exceeds?
The device meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards.
- How many line drivers and receivers does the MAX3243ECPW have?
The device includes three line drivers and five line receivers.
- What is the maximum data rate supported by the MAX3243ECPW?
The device supports data rates up to 250 kbit/s.
- What is the typical standby current of the MAX3243ECPW?
The typical standby current is 1 μA.
- Does the MAX3243ECPW have an auto-powerdown feature?
Yes, the device has an auto-powerdown feature to disable driver outputs when no valid RS-232 signal is sensed.
- What types of packages are available for the MAX3243ECPW?
The device is available in SSOP (DB), SOIC (DW), and TSSOP (PW) packages.
- Can the MAX3243ECPW 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.
- Is the MAX3243ECPW suitable for battery-powered systems?
Yes, the device is suitable for battery-powered systems due to its low power consumption.
