Overview
The MAX3232ECD, 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 MAX3232ECD includes two line drivers and two line receivers, offering robust ESD protection and low power consumption.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3.0 | 3.3 / 5.0 | 5.5 | V |
| Driver High-Level Input Voltage (DIN) | 2.0 | - | 5.5 | V |
| Driver Low-Level Input Voltage (DIN) | 0 | - | 0.8 | V |
| Receiver Input Voltage (RIN) | -25 | - | 25 | V |
| Operating Free-Air Temperature | -40 | - | 85 | °C |
| Data Signaling Rate | - | - | 250 | kbit/s |
| Driver Output Slew Rate | - | - | 30 | V/μs |
| 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
- 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 capacitors (0.1 μF each).
- 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.
- Palmtop PCs.
- Hand-held equipment.
Q & A
- What is the operating voltage range of the MAX3232ECD?
The MAX3232ECD operates with a supply voltage (VCC) ranging from 3.0 V to 5.5 V.
- What are the data signaling rates supported by the MAX3232ECD?
The device supports data signaling rates up to 250 kbit/s.
- How many line drivers and receivers does the MAX3232ECD have?
The MAX3232ECD includes two line drivers and two line receivers.
- What kind of ESD protection does the MAX3232ECD offer?
The device offers ESD protection of ±15 kV (HBM), ±8 kV (IEC61000-4-2, Contact discharge), and ±15 kV (IEC61000-4-2, Air-gap discharge).
- What are the typical operating temperatures for the MAX3232ECD?
The device operates over a temperature range of -40°C to 85°C.
- Does the MAX3232ECD require external capacitors?
Yes, the device requires four external capacitors (0.1 μF each) for proper operation.
- Is the MAX3232ECD pin compatible with other devices?
Yes, it is pin compatible with alternative high-speed devices such as SN65C3232E and SN75C3232E.
- What is the typical supply current of the MAX3232ECD?
The typical supply current is 300 μA.
- Can the MAX3232ECD 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.
- What are some common applications of the MAX3232ECD?
Common applications include industrial PCs, wired networking, data center and enterprise computing, battery-powered systems, notebooks, palmtop PCs, and hand-held equipment.
