Texas Instruments THVD1400/THVD1420 RS-485 Transceivers
Texas Instruments THVD1400/THVD1420 RS-485 Transceivers are robust half-duplex RS-485 transceivers for industrial applications. The bus pins are immune to high levels of IEC Contact Discharge ESD events, eliminating the need for additional system-level protection components. The devices operate from a single 3V to 5.5V supply. The wide common-mode voltage range and low input leakage on bus pins make the devices suitable for multi-point applications over long cable runs. Texas Instruments THVD1400 and THVD1420 are available in an industry-standard, 8-pin SOIC package for drop-in compatibility, as well as in the industry-leading small SOT package. The devices are characterized for ambient temperatures from –40°C to 125°C.Features
- Meets or exceeds the requirements of the TIA/EIA-485A standard
- 3V to 5.5V supply voltage
- Half-duplex RS-422/RS-485
- Data rates
- THVD1400 - 500kbps
- THVD1420 - 12Mbps
- Bus I/O protection
- ±16kV HBM ESD
- ±8kV IEC 61000-4-2 Contact discharge
- ±15kV IEC 61000-4-2 Air gap discharge
- ±4kV IEC 61000-4-4 Fast transient burst
- ±16V bus fault protection (absolute max voltage on bus pins)
- Small, space-saving 8-pin SOT package option (2.1mm x 1.2mm)
- -40°C to 125°C extended industrial temperature range
- Large receiver hysteresis for noise rejection
- Low power consumption
- < 1µA low standby supply current
- 1.5mA (typ) quiescent current during operation
- Glitch-free power-up/down for hot plug-in capability
- Open, short, and idle bus failsafe
- 1/8 Unit load (Up to 256 bus nodes)
Applications
- Factory automation & control
- Building automation
- Grid infrastructure
- Motor drives
- Power delivery
- Industrial transport
- HVAC systems
- Video surveillance
- Smart meters
Functional Block Diagram
Publicado: 2021-02-11
| Actualizado: 2022-03-11
