Overview
The MAX3318EIDBG4 is a dual-driver, dual-receiver RS-232-compatible transceiver produced by Texas Instruments. This device is designed to operate at a data rate of up to 460 kbps and features enhanced electrostatic discharge (ESD) protection. It is suitable for a variety of applications requiring reliable serial communication, particularly in battery-powered systems and handheld devices. The MAX3318EIDBG4 operates from a single 2.25-V to 3-V supply voltage and includes a proprietary low-dropout driver output stage, enabling efficient RS-232-compatible operation.
Key Specifications
| Parameter | Value |
|---|---|
| Data Rate (Max) | 460 kbps |
| Drivers Per Package | 2 |
| Receivers Per Package | 2 |
| ESD Protection (HBM) | ±15 kV |
| Logic Voltage (Min) | 2.5 V |
| Main Supply Voltage (Nom) | 2.5 V |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | SSOP, TSSOP |
| Power Saving Feature | Auto-Powerdown Plus |
| Supply Current in Power-Down Mode | 1 µA |
Key Features
- Operates from a single 2.25-V to 3-V supply voltage.
- Auto-Powerdown Plus feature for flexible power management, reducing supply current to 1 µA in power-down mode.
- Enhanced ESD protection: ±15 kV using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV using the IEC 61000-4-2 Contact Discharge method, and ±15 kV using the Human-Body Model (HBM).
- Proprietary low-dropout driver output stage for efficient RS-232-compatible operation.
- Logic-level output (READY) that asserts when the charge pump is regulating and the device is ready to begin transmitting.
- Available in 20-pin SSOP and TSSOP packages.
Applications
- Battery-powered systems.
- PDAs (Personal Digital Assistants).
- Cellular phones.
- Notebooks and laptops.
- Hand-held equipment.
- Pagers and other portable communication devices.
Q & A
- What is the maximum data rate of the MAX3318EIDBG4?
The maximum data rate of the MAX3318EIDBG4 is 460 kbps.
- What type of ESD protection does the MAX3318EIDBG4 offer?
The MAX3318EIDBG4 offers ±15 kV ESD protection using the IEC 61000-4-2 Air-Gap Discharge method, ±8 kV using the IEC 61000-4-2 Contact Discharge method, and ±15 kV using the Human-Body Model (HBM).
- What is the operating voltage range of the MAX3318EIDBG4?
The MAX3318EIDBG4 operates from a single 2.25-V to 3-V supply voltage.
- What is the Auto-Powerdown Plus feature?
The Auto-Powerdown Plus feature reduces the supply current to 1 µA when the device is in power-down mode, which is activated when the RS-232 cable is disconnected or the drivers of the connected peripherals are inactive for more than 30 seconds.
- What types of packages are available for the MAX3318EIDBG4?
The MAX3318EIDBG4 is available in 20-pin SSOP and TSSOP packages.
- What is the READY output signal used for?
The READY output signal is a logic-level output that asserts when the charge pump is regulating and the device is ready to begin transmitting.
- How does the device manage power when the serial port and driver inputs are inactive?
The device enters a low-power power-down mode when the serial port and driver inputs are inactive for more than 30 seconds, reducing the supply current to 1 µA.
- Is the MAX3318EIDBG4 RoHS compliant?
- What is the typical supply current in active mode?
The specific supply current in active mode is not detailed here, but it is significantly higher than the 1 µA in power-down mode.
- How does the INVALID signal work?
The INVALID signal is a valid signal detector output that is active low. It indicates that a valid RS-232 level is present on a receiver input.
- What are the typical applications of the MAX3318EIDBG4?
The MAX3318EIDBG4 is typically used in battery-powered systems, PDAs, cellular phones, notebooks, hand-held equipment, and pagers.
