SN65HVD1781D

The SN65HVD1781D is designed as one kind of 70-V fault-protected RS-485 transceiver that can be used in (1)HVAC networks; (2)security electronics; (3)building automation; (4)telecomm equipment; (5)motion control; (6)industrial networks. SN65HVD1781D combines a differential driver and a differential receiver, which operate from a single power supply, and is also robust to ESD events, with high levels of protection to the JEDEC or IEC human-body-model specification.

Features of the SN65HVD1781D are:(1)Bus-Pin Fault Protection to > ±70 V;(2)Operation With 3.3-V to 5-V Supply Range;(3)±16 kV HBM Protection on Bus Pins;(4)Reduced Unit Load for up to 320 Nodes;(5)Failsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus Conditions;(6)Designed for RS-485 and RS-422 Networks;(7)Pin-Compatible With Industry-Standard SN75176.

The absolute maximum ratings of the SN65HVD1781D can be summarized as:(1)Supply voltage:0.5 to 7 V;(2)Voltage range at A and B inputs:70 to 70 V;(3)Input voltage range at any logic pin:0.3 to VCC + 0.3 V;(4)Voltage input range, transient pulse, A and B, through 100 :70 to 70 V;(5)Receiver output current:24 to 24 mA;(6)Junction temperature: 170 °C;(7)JEDEC Standard 22, Test Method A114 (human-body model), bus terminals and GND: ±16 kV;(8)JEDEC Standard 22, Test Method A114 (human-body model), all pins: ±4 kV;(9)JEDEC Standard 22, Test Method C101 (charged-device model), all pins: ±2 kV;(10)JEDEC Standard 22, Test Method A115 (machine model), all pins: ±400 V.

The electrical characteristics of the SN65HVD1781D can be summarized as:(1)Driver short-circuit output current:150 to 150 mA;(2)Receiver output high-impedance current:1 to 1 uA;(3)Driver input, driver enable, and receiver enable input current: 50 to 50 uA. If you want to know more information such as the electrical characteristics about SN65HVD1781D, please download the datasheet in www.seekic.com or www.chinaicmart.com .