Overview
The MAX3232EID, 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 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 MAX3232EID includes two line drivers and two line receivers, and it is notable for its high ESD protection and low supply current.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | 3.3 / 5.0 | 5.5 | V |
| Operating Free-Air Temperature | -40 | 85 | °C | |
| Supply Current (ICC) | 0.3 | 1 | mA | |
| Driver Output Voltage (VOH/VOL) | -5 / 5 | -5.4 / 5.4 | V | |
| Data Signaling Rate | 250 | kbit/s | ||
| Driver Output Slew Rate | 30 | V/μs | ||
| ESD Protection (HBM/IEC61000-4-2) | ±15 kV / ±8 kV (Contact), ±15 kV (Air-Gap) |
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)
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards
- Operates with a 3-V to 5.5-V VCC supply
- Operates up to 250 kbit/s data signaling rate
- Includes two line drivers and two line receivers
- Low supply current: 300 μA typical
- Requires four external 0.1 μF capacitors
- Accepts 5-V logic input with a 3.3-V supply
- Pin compatible with alternative high-speed devices (1 Mbit/s): SN65C3232E and SN75C3232E
Applications
- Industrial PCs
- Wired networking
- Data center and enterprise computing
- Battery-powered systems
- Notebooks and laptops
- Palmtop PCs
- Hand-held equipment
Q & A
- What is the operating voltage range of the MAX3232EID? The MAX3232EID operates with a 3-V to 5.5-V VCC supply.
- What are the data signaling rates supported by the MAX3232EID? The device operates up to 250 kbit/s.
- How many line drivers and receivers does the MAX3232EID have? The MAX3232EID includes two line drivers and two line receivers.
- What is the typical supply current of the MAX3232EID? The typical supply current is 300 μA.
- What kind of ESD protection does the MAX3232EID offer? The device offers ±15 kV ESD protection using the human-body model (HBM) and ±8 kV / ±15 kV for IEC61000-4-2 contact and air-gap discharges, respectively.
- What are the recommended external capacitors for the MAX3232EID? Four external 0.1 μF capacitors are required.
- Is the MAX3232EID compatible with 5-V logic inputs? Yes, it accepts 5-V logic inputs even with a 3.3-V supply.
- What are some common applications of the MAX3232EID? Common applications include industrial PCs, wired networking, data centers, battery-powered systems, and hand-held equipment.
- What are the alternative high-speed devices compatible with the MAX3232EID? The SN65C3232E and SN75C3232E are pin-compatible alternatives.
- What is the maximum driver output slew rate of the MAX3232EID? The maximum driver output slew rate is 30 V/μs.
