SN65HVD74 Datasheet | Texas Instruments

Features - 1 1/8 Unit-load options available - Up to 256 Nodes on the bus - Bus I/O Protection - > ±30-k V HBM protection - > ±12-k V IEC61000-4-2 Contact discharge - > ±4-k V IEC61000-4-4 Fast transient burst - Extended industrial temperature range: - 40°C to 125°C - Large receiver hysteresis (70 m V) for noise rejection - Low power consumption - < 1.1-m A Quiescent current during operation - Low Standby supply current: 10 n A Typical, < 5 µA (maximum) - Glitch-free power-up and power-down protection for hot-plugging applications - 5-V Tolerant logic inputs patible with 3.3-V or 5-V controllers - Signaling rate options optimized for: 400 kbps (70, 71), 20 Mbps (73, 74), 50 Mbps (76, 77) 2 Applications - E-meters - Industrial automation - Building automation - Security and surveillance - Encoders and decoders 3 Description These devices extend the RS-485 portfolio with a family of full-duplex transceivers with robust 3.3-V drivers and receivers and high levels of ESD protection. The ESD protection includes > ±30-k V HBM and > ±12-k V IEC61000-4-2 contact discharge. The large receiver hysteresis of the SN65HVD7x devices provides immunity to conducted differential noise and the wide operating temperature enables reliability in harsh operating environments. The SN65HVD7x devices are offered in a standard SOIC package as well as in a small-footprint MSOP package. These devices each bine a differential driver and a differential receiver, which operate from a single 3.3-V power supply. Each driver and receiver has separate input and output pins for full-duplex bus munication designs. These devices all feature a wide mon-mode voltage range which makes the devices suitable for multi-point applications over long cable runs. The SN65HVD71, SN65HVD74, and SN65HVD77 devices are fully enabled with no external enabling pins. The SN65HVD70, SN65HVD73, and SN65HVD76 devices have active-high driver enables and activelow receiver enables. A low, less than 5-µA standby current can be achieved...