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The history of Renesas' communication interface ICs dates back to the 1970s, and the company continues to play an active role as a market leader today, with a lineup of ICs that offer a variety of features, including high-speed communication, low power consumption, and high ESD resistance.
Product Summary
Renesas' RS-232 and RS-485/422 products are ICs that act as interfaces for communications between industrial equipment, such as transceivers and receivers.
| item | RS-232 | RS-422 | RS-485 |
| Transmission Signal | single end | Differential | Differential |
| Number of connections | 1:1 | 1:N | N:M |
| Maximum number of drivers connected | 1 | 1 | 32 |
| Maximum number of receiver connections | 1 | 10 | 32 |
| Maximum Cable Length | Approximately 15m | 1220m(4000ft) | 1220m(4000ft) |
| Transmission speed | Max.19.8kbps | Max. 10Mbps @15.2m/Min. ≦90kbps @1200m | |
Features
- IEC61000 with enhanced ESD protection
- Heavy Duty Fault Protection: Overvoltage Protection (OVP)
- High Speed Transceiver
- Low voltage/low power
- Low Cost Transceivers
- Multi-protocol
Product Specifications
product type
■ Basic
Basic functions: Number of nodes - Maximum 32, Failsafe - Open
- ESD protection: Specified by the Human Body Model
■ESD protection & full functionality
- ESD protection: Specified in IEC61000-4-2 (electrostatic discharge immunity test)
Fully featured: Node count – up to 256, Fully fail-safe – Open, Short, Idle Bus, Hot plug
■ESD protection, high speed, full functionality
40Mbps data rate, IEC61000-4-2 ESD protection, full functionality
Applications: Robotics, control, data collection where low latency and high throughput are required
■±60V overvoltage protection
- ±60V overvoltage protection (OVP operates even during power down or when VCC/GND terminals are floating), full function
- Wide range of common mode voltages ⇒ Supports increased common mode voltages in long distance networks and noisy environments
■Micro Power
・Power supply voltage: 1.8V to 3.6V, self-consumption current: 105uA @1.8V
・Although not fully compliant with the RS-485 standard, it provides robust differential communication even at distances of over 300m
■4ch Tx & Rx
- 4ch built-in
- Unidirectional transmission
・3.0V to 5.5V power supply, full functionality
■ Dual Protocol
- RS-232 and RS-485 in one package
Lineup Table
Contact Us
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