Description
F81438G Multi-Protocol RS-232 / RS-485 / RS-422 Transceiver IC TSSOP-28
Product Overview
The F81438G is a programmable multi-protocol serial transceiver IC from FINTEK designed to support RS-232, RS-485, and RS-422 communication standards in a single chip. It integrates drivers, receivers, charge pumps, and configurable operating modes, providing a compact and flexible solution for industrial communication, embedded systems, and serial interface applications.
Key Features
- Supports RS-232, RS-485, and RS-422 protocols
- Single 5V power supply operation
- Integrated charge pump for RS-232 voltage generation
- Four selectable operating modes
- Half-duplex and full-duplex communication support
- Adjustable slew rate control for EMI reduction
- High ESD protection up to ±15kV
- Up to 256 transceivers on RS-485 bus
- Advanced failsafe protection
- Compact TSSOP-28 package
- Low power consumption
Technical Specifications
| Specification |
Details |
| Part Number |
F81438G |
| Product Type |
Multi-Protocol Serial Transceiver |
| Supported Protocols |
RS-232 / RS-485 / RS-422 |
| Supply Voltage |
5V |
| Package Type |
TSSOP-28 |
| Mounting Type |
Surface Mount (SMD/SMT) |
| RS-232 Configuration |
3 Drivers / 5 Receivers |
| RS-485 Configuration |
1 Driver / 1 Receiver |
| RS-422 Configuration |
Full Duplex |
| ESD Protection |
±15kV IEC 61000-4-2 Air Gap |
| Communication Mode |
Half Duplex / Full Duplex |
| Slew Rate Control |
Yes |
| Operating Temperature |
0°C to +70°C |
| Interface Type |
UART Serial |
| Bus Capacity |
Up to 256 Nodes (RS-485) |
Operating Modes
| Mode |
Description |
| RS-232 Mode |
3TX / 5RX serial communication |
| RS-485 TX Mode |
Half-duplex transmit |
| RS-485 RX Mode |
Half-duplex receive |
| RS-422 Mode |
Full-duplex communication |
Applications
- Industrial automation
- Serial communication converters
- Embedded systems
- PLC communication
- POS systems
- Modems and networking equipment
- Data acquisition systems
- RS-232/RS-485 interface converters
- Industrial control equipment
Package Information
| Parameter |
Value |
| Package |
TSSOP-28 |
| Pin Count |
28 Pins |
| Pin Pitch |
0.65 mm |
| Mounting |
SMD / SMT |
Advantages
- Multiple serial standards in one IC
- Reduces external component count
- Simplifies PCB design
- High noise immunity
- Suitable for long-distance communication
- Reliable industrial-grade performance
Package Includes
- 1 × F81438G Multi-Protocol Transceiver IC (TSSOP-28)
Datasheet & Reference
F81438G Datasheet PDF
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