The MAX14770EESA+ is a ±35KV high ESD profibus RS 485 transceiver in 8 pin NSOIC package. This is a half-duplex, 20Mbps transceiver for PROFIBUS-DP and RS 485 applications. In addition, it can be used for RS-422/V.11 communications. IC is designed to meet IEC 61158-2, TIA/EIA-422-B, TIA/EIA- 485-A, V.11 and X.27 standards. Device features true fail-safe circuitry that gives a logic high receiver output when receiver inputs are open or shorted or when they are connected to a terminated transmission line with all drivers disabled. Drivers are output short circuit current limited. Thermal shutdown circuitry protects drivers against excessive power dissipation. When activated thermal shutdown circuitry places driver outputs into a high impedance state. It has a hot swap input structure that prevents disturbances on the differential signal lines when IC is powered up. It is used in PROFIBUS-DP networks, industrial fieldbuses, motion controllers, RS 485 networks and machine encoders.
- Supply voltage range is 4.5V to 5.5V
- Operating temperature range from -40°C to 85°C
- Integrated protection increases robustness, ±35KV HBM ESD per JEDEC JS-001-2012
- ±12KV contact ESD per IEC 61000-4-2, ±15KV air gap ESD per IEC 61000-4-2
- True fail-safe receiver prevents false transitions on receiver input short or open
- Hot swap eliminates false transitions during power-up or hot insertion
- Short circuit protected outputs, thermal shutdown circuitry prevents excessive power dissipation
- Low current reduces power consumption, 15μA shutdown current
- 2.5mA supply current typical with No load, profibus compliant with minimum 20Mbps data rate
- Allows up to 128 transceivers on the bus
通信与网络
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