Overview
The MAX3237EIDW is a multichannel RS-232 line driver/receiver produced by Texas Instruments. This device is designed to provide a reliable and efficient interface between an asynchronous communication controller and the serial-port connector. It operates within a voltage range of 3-V to 5.5-V and supports data signaling rates up to 1 Mbit/s in MegaBaud mode. The MAX3237EIDW features a dual charge-pump circuit, which generates the necessary voltage levels for RS-232 communication without requiring external voltage regulators. It also includes robust ESD protection, ensuring the device can withstand ±15-kV ESD events.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VCC) | 3 | - | 5.5 | V |
| Data Rate (Normal Mode) | - | - | 250 kbit/s | - |
| Data Rate (MegaBaud Mode) | - | - | 1 Mbit/s | - |
| ESD Protection | - | - | ±15 kV | - |
| Operating Temperature Range | -40 | - | 85 | °C |
| High-Level Output Voltage (VOH) | 5 | 5.4 | - | V |
| Low-Level Output Voltage (VOL) | -5 | -5.4 | - | V |
| Shutdown Supply Current | - | - | 1 mA | - |
| Transition-Region Slew Rate | 4 | 30 | - | V/ms |
Key Features
- 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.
- Dual charge-pump circuit for generating RS-232 voltage levels.
- ±15-kV ESD protection for RS-232 I/O pins.
- Low standby current: 1 mA typical.
- Accepts 5-V logic input with a 3.3-V supply.
- Shutdown mode with high-impedance outputs and disabled charge pump.
- Receiver outputs can be placed in high-impedance state.
Applications
- Battery-powered, hand-held, and portable equipment.
- PDAs and palmtop PCs.
- Notebooks, sub-notebooks, and laptops.
- Digital cameras.
- Mobile phones and wireless devices.
Q & A
- What is the operating voltage range of the MAX3237EIDW? The MAX3237EIDW operates within a voltage range of 3-V to 5.5-V.
- What are the data signaling rates supported by the MAX3237EIDW? The device supports data signaling rates up to 250 kbit/s in normal mode and up to 1 Mbit/s in MegaBaud mode.
- What kind of ESD protection does the MAX3237EIDW offer? The MAX3237EIDW offers ±15-kV ESD protection for RS-232 I/O pins.
- How many line drivers and receivers does the MAX3237EIDW have? The MAX3237EIDW has five line drivers and three line receivers.
- What is the typical standby current of the MAX3237EIDW? The typical standby current is 1 mA.
- Can the MAX3237EIDW accept 5-V logic input with a 3.3-V supply? Yes, the MAX3237EIDW can accept 5-V logic input with a 3.3-V supply.
- How does the shutdown mode affect the device? In shutdown mode, the transmitters are disabled, the outputs are forced into high-impedance state, and the onboard charge pump is disabled.
- What is the operating temperature range of the MAX3237EIDW? The operating temperature range is from -40°C to 85°C.
- What types of packages are available for the MAX3237EIDW? The device is available in SOIC (DW), SSOP (DB), and TSSOP (PW) packages.
- What are some common applications of the MAX3237EIDW? Common applications include battery-powered devices, PDAs, notebooks, digital cameras, and mobile phones.
