Overview
The MAX3232ECDWG4, 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 a reliable and efficient interface between an asynchronous communication controller and the serial-port connector. It features enhanced electrostatic-discharge (ESD) protection and operates within a wide voltage range, making it versatile for various applications.
The MAX3232E includes two line drivers, two line receivers, and a dual charge-pump circuit. It meets the requirements of TIA/EIA-232-F and ITU V.28 standards, ensuring compatibility with standard RS-232 communication protocols. The device is capable of operating at data signaling rates up to 250 kbit/s and has a maximum driver output slew rate of 30-V/μs.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VCC Supply Voltage | 3.0 | - | 5.5 | V |
| Operating Temperature | -40 | - | 85 | °C |
| Data Signaling Rate | - | - | 250 | kbit/s |
| Driver Output Slew Rate | - | - | 30 | V/μs |
| ESD Protection (HBM) | ±15 | - | ±15 | kV |
| ESD Protection (IEC61000-4-2 Contact Discharge) | ±8 | - | ±8 | kV |
| ESD Protection (IEC61000-4-2 Air-Gap Discharge) | ±15 | - | ±15 | kV |
| Supply Current | - | 300 | - | μA |
| External Capacitors | - | 4 × 0.1 μF | - | - |
Key Features
- ESD protection for RS-232 bus pins: ±15 kV (HBM), ±8 kV (IEC61000-4-2 Contact Discharge), and ±15 kV (IEC61000-4-2 Air-Gap Discharge).
- Operates with a 3-V to 5.5-V VCC supply, making it suitable for a wide range of applications.
- Includes two line drivers and two line receivers, providing a complete RS-232 interface.
- Supports data signaling rates up to 250 kbit/s.
- Low supply current: typical 300 μA.
- Accepts 5-V logic input with a 3.3-V supply.
- Pin compatible with alternative high-speed devices such as SN65C3232E and SN75C3232E.
- Internal dual charge-pump circuit requires only four small external capacitors for operation.
Applications
- Industrial PCs
- Wired networking
- Data center and enterprise computing
- Battery-powered systems
- Notebooks and palmtop PCs
- Hand-held equipment
Q & A
- What is the operating voltage range of the MAX3232E?
The MAX3232E operates with a 3-V to 5.5-V VCC supply.
- What level of ESD protection does the MAX3232E offer?
The MAX3232E offers ESD protection up to ±15 kV (HBM), ±8 kV (IEC61000-4-2 Contact Discharge), and ±15 kV (IEC61000-4-2 Air-Gap Discharge).
- How many line drivers and receivers does the MAX3232E have?
The MAX3232E includes two line drivers and two line receivers.
- What is the maximum data signaling rate supported by the MAX3232E?
The MAX3232E supports data signaling rates up to 250 kbit/s.
- What is the typical supply current of the MAX3232E?
The typical supply current of the MAX3232E is 300 μA.
- Does the MAX3232E require external capacitors for operation?
Yes, the MAX3232E requires four small external capacitors (typically 0.1 μF each) for operation.
- Is the MAX3232E pin compatible with other high-speed devices?
Yes, the MAX3232E is pin compatible with alternative high-speed devices such as SN65C3232E and SN75C3232E.
- What are some common applications of the MAX3232E?
The MAX3232E is commonly used in industrial PCs, wired networking, data center and enterprise computing, battery-powered systems, notebooks, palmtop PCs, and hand-held equipment.
- What is the maximum operating temperature of the MAX3232E?
The maximum operating temperature of the MAX3232E is 85°C for the MAX3232EI and 70°C for the MAX3232EC.
- Does the MAX3232E meet standard RS-232 communication protocols?
Yes, the MAX3232E meets the requirements of TIA/EIA-232-F and ITU V.28 standards.
