Overview
The MAX3232EIDWG4, 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 the electrical interface between an asynchronous communication controller and the serial-port connector, adhering to the TIA/EIA-232-F and ITU V.28 standards. It features two line drivers, two line receivers, and a dual charge-pump circuit, enabling operation from a single 3-V to 5.5-V supply. The MAX3232EIDWG4 is known for its enhanced electrostatic-discharge (ESD) protection and low power consumption, making it suitable for various applications, including battery-powered systems and handheld devices.
Key Specifications
| Parameter | Test Conditions | Min | Max | Unit | |
|---|---|---|---|---|---|
| Supply Voltage (VCC) | - | 3.0 | 3.3 / 5.0 | 5.5 | V |
| Supply Current (ICC) | No load, VCC = 3.3 V or 5 V | 0.3 | 1 | - | mA |
| Driver Output Voltage (VOH/VOL) | RL = 3 kΩ to GND | -5 / 5 | -5.4 / 5.4 | - | V |
| Driver Output Slew Rate (SR(tr)) | CL = 150 pF to 1000 pF | 4 | - | 30 | V/μs |
| Receiver Input Voltage Range | - | -25 | - | 25 | V |
| Operating Free-Air Temperature (TA) | - | -40 | - | 85 | °C |
| ESD Protection (HBM) | - | ±15 | - | - | kV |
| ESD Protection (IEC61000-4-2, Contact Discharge) | - | ±8 | - | - | kV |
| ESD Protection (IEC61000-4-2, Air-Gap Discharge) | - | ±15 | - | - | kV |
Key Features
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards
- Operates with a single 3-V to 5.5-V VCC supply
- Two line drivers and two line receivers
- Dual charge-pump circuit requiring four small external capacitors (0.1 μF each)
- Enhanced ESD protection: ±15 kV (HBM), ±8 kV (IEC61000-4-2, Contact Discharge), ±15 kV (IEC61000-4-2, Air-Gap Discharge)
- Low supply current: 300 μA typical
- Accepts 5-V logic input with a 3.3-V supply
- Pin compatible with alternative high-speed devices (e.g., SN65C3232E, SN75C3232E)
- Operates up to 250 kbit/s data signaling rate
- Maximum driver output slew rate of 30 V/μs
Applications
- Battery-powered systems
- PDAs (Personal Digital Assistants)
- Notebooks and laptops
- Palmtop PCs
- Hand-held equipment
Q & A
- What is the operating voltage range of the MAX3232EIDWG4?
The MAX3232EIDWG4 operates from a single 3-V to 5.5-V supply.
- How many line drivers and receivers does the MAX3232EIDWG4 have?
The device has two line drivers and two line receivers.
- What is the data signaling rate capability of the MAX3232EIDWG4?
The device operates at data signaling rates up to 250 kbit/s.
- What kind of ESD protection does the MAX3232EIDWG4 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 typical supply current and output slew rate of the MAX3232EIDWG4?
The typical supply current is 300 μA, and the maximum driver output slew rate is 30 V/μs.
- Is the MAX3232EIDWG4 pin compatible with other high-speed devices?
Yes, it is pin compatible with devices like SN65C3232E and SN75C3232E.
- What are the recommended external capacitors for the charge pump?
The device requires four small external capacitors, each 0.1 μF.
- What is the operating temperature range of the MAX3232EIDWG4?
The operating free-air temperature range is from -40°C to 85°C.
- What standards does the MAX3232EIDWG4 comply with?
The device meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards.
- Can the MAX3232EIDWG4 accept 5-V logic input with a 3.3-V supply?
Yes, it can accept 5-V logic input with a 3.3-V supply.
