Overview
The MAX3232CDR, produced by Texas Instruments, is a 3- to 5.5-V dual-channel RS-232 line driver/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 suitable for a variety of applications including battery-powered systems, PDAs, notebooks, and hand-held equipment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 3 to 5.5 | V |
| Operating Temperature Range | 0 to 70 | °C |
| Data Signaling Rate | Up to 250 | kbit/s |
| Driver Output Slew Rate | 30 | V/μs |
| ESD Protection | ±15 kV | |
| Package Type | SOIC (D) | |
| Number of Pins | 16 | |
| Supply Current | 300 µA (Typical) | |
| External Capacitors | 4 × 0.1 µF |
Key Features
- RS-232 bus-terminal ESD protection exceeds ±15 kV using the human-body model (HBM).
- Meets or exceeds the requirements of TIA/EIA-232-F and ITU V.28 standards.
- Operates with a 3-V to 5.5-V supply voltage.
- Supports data signaling rates up to 250 kbit/s.
- Includes two line drivers and two line receivers.
- Low supply current: 300 µA (Typical).
- Accepts 5-V logic input with a 3.3-V supply.
- Alternative high-speed terminal-compatible devices available (e.g., SN65C3232, SN75C3232).
Applications
- Battery-powered systems
- PDAs
- Notebooks
- Laptops
- Palmtop PCs
- Hand-held equipment
Q & A
- What is the operating voltage range of the MAX3232CDR?
The MAX3232CDR operates with a supply voltage range of 3 to 5.5 V.
- What is the maximum data signaling rate supported by the MAX3232CDR?
The device supports data signaling rates up to 250 kbit/s.
- How many line drivers and receivers does the MAX3232CDR have?
The MAX3232CDR includes two line drivers and two line receivers.
- What is the ESD protection level of the MAX3232CDR?
The device has RS-232 bus-terminal ESD protection exceeding ±15 kV using the human-body model (HBM).
- What type of package does the MAX3232CDR come in?
The MAX3232CDR is packaged in a SOIC (D) with 16 pins.
- What is the typical supply current of the MAX3232CDR?
The typical supply current is 300 µA.
- Does the MAX3232CDR require external capacitors?
Yes, it requires four external capacitors (4 × 0.1 µF).
- Can the MAX3232CDR 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 MAX3232CDR?
Common applications include battery-powered systems, PDAs, notebooks, laptops, palmtop PCs, and hand-held equipment.
- Are there alternative high-speed terminal-compatible devices available?
Yes, alternative devices such as the SN65C3232 and SN75C3232 are available.
