Overview
The MAX3232CDW, produced by Texas Instruments, is a 3-V to 5.5-V multichannel RS-232 line driver and receiver. This device is designed to provide an electrical interface between an asynchronous communication controller and a serial-port connector, adhering to the TIA/EIA-232-F and ITU V.28 standards. It features a dual charge-pump circuit that allows operation from a single 3-V to 5.5-V supply, making it versatile for various applications. The MAX3232CDW includes two line drivers, two line receivers, and offers ±15-kV ESD protection terminal to terminal, enhancing its reliability and durability.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | 3.3 / 5.0 | 5.5 | V |
| Supply Current (ICC) | 0.3 | 1 | 1 | mA |
| Driver High-Level Output Voltage (VOH) | -10 | -9 | -5 | V |
| Driver Low-Level Output Voltage (VOL) | -5 | -9 | -10 | V |
| Maximum Data Rate | 150 | 250 | 250 | kbit/s |
| Driver Output Slew Rate (SR(tr)) | 6 | 30 | 30 | V/μs |
| Operating Temperature (TA) | -40 | - | 85 | °C |
| ESD Protection (Human Body Model) | ±15 kV | - | - | V |
Key Features
- Operates with 3-V to 5.5-V VCC supply.
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards.
- ±15-kV ESD protection terminal to terminal (serial-port connection terminals, including GND).
- Two drivers and two receivers.
- Low supply current: 300 μA typical.
- External capacitors: 4 × 0.1 μF.
- Accepts 5-V logic input with 3.3-V supply.
- Operates up to 250 kbit/s data signaling rates.
- Maximum driver output slew rate of 30-V/μs.
Applications
- Industrial PCs.
- Wired networking.
- Data center and enterprise networking.
- Battery-powered systems.
- PDAs, notebooks, laptops, and palmtop PCs.
- Hand-held equipment.
Q & A
- What is the operating voltage range of the MAX3232CDW?
The MAX3232CDW operates with a supply voltage (VCC) range of 3-V to 5.5-V.
- What are the key standards that the MAX3232CDW complies with?
The device meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards.
- What level of ESD protection does the MAX3232CDW offer?
The MAX3232CDW provides ±15-kV ESD protection terminal to terminal using the human-body model (HBM).
- How many drivers and receivers does the MAX3232CDW have?
The device includes two line drivers and two line receivers.
- What is the typical supply current of the MAX3232CDW?
The typical supply current is 300 μA.
- What is the maximum data rate supported by the MAX3232CDW?
The device supports data signaling rates up to 250 kbit/s.
- What is the maximum driver output slew rate of the MAX3232CDW?
The maximum driver output slew rate is 30-V/μs.
- What types of applications is the MAX3232CDW suitable for?
The device is suitable for industrial PCs, wired networking, data center and enterprise networking, battery-powered systems, PDAs, notebooks, laptops, palmtop PCs, and hand-held equipment.
- How many external capacitors are required for the MAX3232CDW, and what are their values?
The device requires four external capacitors, each with a value of 0.1 μF for 3.3-V operation and different values for 5-V operation (0.047 μF and 0.33 μF).
- Can the MAX3232CDW 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.
