MAX3243EEUI+T IC TRANSCEIVER FULL 3/5 28TSSOP
Details
MAX3243E – 3V RS-232 Transceiver with AutoShutdown™, ±15kV ESD Protection
Overview
The MAX3243E from Maxim Integrated is a high-performance, 3V-powered RS-232 transceiver designed for next-generation portable and embedded electronics. Featuring advanced AutoShutdown™ technology, robust ±15kV ESD protection, and high-speed data rates, the MAX3243E delivers reliable serial communication while minimizing power consumption in battery-critical applications.
Key Features
- Operates from a single 3.0V to 5.5V supply
- AutoShutdown™ / AutoWake™ reduces supply current to ~1µA
- ±15kV ESD protection (IEC 1000-4-2 Air-Gap), ±8kV Contact, ±15kV HBM
- High-speed communication up to 250 kbps
- Dual charge-pump design — requires only four 0.1µF capacitors
- Three drivers and five receivers for a complete serial interface
- Two always-on receivers for external device monitoring
- Compact TSSOP, SSOP, or TQFN package options
- True RS-232 output levels from a low-dropout driver stage
Short Description
The MAX3243E is a full-featured 3-driver/5-receiver RS-232 transceiver optimized for portable, battery-powered systems. With ultra-low power consumption, ±15kV ESD protection, and a space-efficient design, it is ideal for notebooks, handheld instruments, and embedded serial communication applications.
Long Description
The MAX3243E belongs to Maxim Integrated’s advanced family of low-voltage RS-232 transceivers. Designed for demanding portable and embedded environments, it offers an impressive combination of power savings, electrical protection, and high-speed performance. Its innovative AutoShutdown™ technology automatically reduces supply current to approximately 1µA when an RS-232 cable is disconnected or inactive, dramatically extending battery life without requiring changes to system software.
With a dual-charge-pump architecture, the MAX3243E generates compliant RS-232 signal levels from a single 3.3V supply using only four small ceramic capacitors. The device supports data rates up to 250 kbps while meeting all RS-232 voltage and timing specifications, ensuring compatibility with modern and legacy serial equipment.
The integrated three drivers and five receivers provide a complete serial port interface. Two receivers remain active even when the device or system is powered down, ensuring safe monitoring of external devices without stressing protection diodes. This makes the MAX3243E ideal for applications with mixed-power domains or sleep-mode operation.
Applications
- Notebook, ultrabook, and subnotebook computers
- Handheld data terminals & portable instrumentation
- Battery-powered embedded systems
- Cellular and mobile communication devices
- Printers and external peripherals
- Medical and industrial handheld equipment
- Serial-to-USB converters and interface adapters
Technical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | +3.0V to +5.5V |
| Data Rate | 250 kbps (guaranteed) |
| ESD Protection | ±15kV (Air-Gap), ±8kV (Contact), ±15kV (HBM) |
| Transmitters / Receivers | 3 Tx / 5 Rx |
| Charge Pump | Dual, requires 4 × 0.1µF capacitors |
| Shutdown Current | ~1µA with AutoShutdown™ |
| Packages | TSSOP, SSOP, TQFN |
Related / Next-Generation Products
- MAX3228E / MAX3229E: ±15kV ESD Protected RS-232 in UCSP™
- MAX3222E / MAX3232E / MAX3237E / MAX3241E / MAX3246E: 10nA, 1Mbps RS-232 transceivers
- MAX3380E / MAX3381E: Low-power 2Tx/2Rx RS-232 for cable-powered applications
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