| Number of receivers | 1 |
| Number of transmitters | 1 |
| Duplex | Half |
| Supply voltage (Nom) (V) | 3.3, 5 |
| Signaling rate (Max) (Mbps) | 20 |
| IEC 61000-4-2 contact (+/- kV) | 4 |
| Fault protection (V) | -15 to 15 |
| Common mode range | -12 to 12 |
| Number of nodes | 256 |
| Features | Extended common mode, IEC ESD protection, Surge protection |
| Isolated | No |
| ICC (Max) (mA) | 3 |
| Rating | Catalog |
| Operating temperature range (C) | -40 to 125 |
- Meets or exceeds the requirements of the TIA/EIA-485A standard
- 3-V to 5.5-V Supply voltage
- Bus I/O protection
- ± 16 kV HBM ESD
- ± 4 kV IEC 61000-4-2 Contact discharge
- ± 8 kV IEC 61000-4-2 Air-gap discharge
- ± 4 kV IEC 61000-4-4 Electrical fast transient
- ± 3 kV IEC 61000-4-5 1.2/50-μs Surge
- Supports 20 Mbps
- Extended ambient
temperature range: -40°C to 125°C - Extended operational
common-mode range: ± 12 V - Receiver hysteresis for noise rejection: 30 mV
- Low power consumption
- Standby supply current: < 2 μA
- Current during operation: < 3 mA
- Glitch-free power-up/down for hot plug-in capability
- Open, short, and idle bus fail-safe
- 1/8 Unit load (Up to 256 bus nodes)
- Industry standard 8-Pin SOIC
for drop-in compatibility
THVD1428 is a half-duplex RS-485 transceiver with integrated surge protection. Surge protection is achieved by integrating transient voltage suppressor (TVS) diodes in the standard 8-pin SOIC (D) package. This feature provides a substantial increase in reliability for better immunity to noise transients coupled to the data cable, eliminating the need for external protection components.
This device operates from a single 3.3-V or 5-V supply and features a wide common-mode voltage range which makes it suitable for multi-point applications over long cable runs.
The device is available in the industry standard SOIC package for easy drop-in without any PCB changes. The device is characterized over ambient free-air temperatures from –40°C to 125°C.
