Intersil has developed a new series of small-footprint quad RS422 transmitters with 16,5 kV ESD protection. The devices feature wide supply voltage operating ranges for motor control applications, process control networks, telecommunications products and factory automation systems.
The ISL32179E, ISL32272E and ISL32274E withstand ESD during assembly and while in use, featuring ±16,5 kV ESD protection that meets HBM and IEC61000-4-2 standards on transmitter outputs. All of the new transmitters also feature powersaving low-output leakage currents, at just ±20 μA, and are designed to operate from either 3,3 V or 5 V and at temperatures between -40°C and 125°C.
Data rates reach 32 Mbps, and quiescent current is a low 0,8 mA. Slew rate-limited versions are also offered, so low data-rate applications can minimise EMI and transmission line reflections. Shutdown supply current is as low as 60 μA on the QFN package versions. Driver outputs are tri-statable, and incorporate a hot-plug feature to keep them disabled during power-up and power-down.
Industry-standard versions are available in TSSOP or widely used NSOIC packages, while the ISL32179E is offered in tiny 4 x 4 mm QFN packages. The ISL32179E also features data-rate and enable options for design versatility. Multiple enable pins allow the user to choose active high or low group enables, paired-enables or individual channel enables, available on the ISL32179E, and speed select pins allow the user to select data rates from 460 Kbps to 32 Mbps, also available only on the ISL32179E. The ultra-small QFN package incorporates a VL pin to adjust the logic pin input thresholds, eliminating the need for extended voltage level translator ICs in most designs.
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