Intersil RS-422 transmitters resist +/- 16.5kV ESD
Intersil
RS-422 transmitters
Intersil has developed a series of small-footprint quad 16.5kV ESD-protected RS-422 transmitters.
These devices feature wide supply-voltage operating ranges for motor-control applications, process-control networks, telecommunications products and factory-automation systems.
The new ISL32179E, ISL32272E and ISL32274E withstand ESD during assembly and while in use.
They feature +/- 16.5kV ESD protection that meets HBM and IEC61000-4-2 standards on transmitter outputs.
The new transmitters also feature power-saving low-output leakage currents, at just +/- 20uA.
They can operate from either 3.3 or 5V and at temperatures between -40 to +125C.
The transmitters can replace existing RS-422 transmitters restricted to 5V supply voltages or that operate in limited temperature ranges.
The ISL32179E, ISL32272E and ISL32274E are suitable for designs using the RS-422 communication interface, providing maximum protection from the harshest ESD events during assembly and use.
Data rates reach 32Mbits/second and quiescent current is a low 0.8mA, maximum.
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 60uA on the QFN package versions.
Driver (Tx) 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 4mm QFN packages that are 50 per cent smaller than the TSSOPs, providing significant board-space savings.
The ISL32179E also features data-rate and enable options, offering maximum design versatility.
Multiple enable pins allow the user to choose active high or low group enables (EN or EN#), paired-enables (EN12 and EN34); or individual channel enables, available on the ISL32179E.
Speed-select pins allow the user to select data rates from 460kbps to 32Mbps, 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.
More stories
PWM controller targets power systems in telecom
Intersil has introduced a current mode PWM controller that is said to simplify design through feature integration and reduced component count.
Intersil releases low-power driver amplifier
Intersil has released an ultra-low-distortion, low-power, differential I/O amplifier that is claimed to provide an excellent spurious-free dynamic range (SFDR) and signal-to-noise ratio (SNR).
ICs capable of protecting multiple USB ports
Intersil has introduced a range of power controllers designed to meet the power supply requirements of industry-standard USB devices, which offer high-current capability in a small package.
DC/DC module provides POL power management
Intersil has introduced a digital DC/DC power module designed to provide point-of-load (POL) power management in applications such as servers, telecommunications, networking and storage equipment.
DC/DC regulators for single Li+ cell applications
Intersil has introduced a trio of dual-output FET buck regulators that provide up to 95 per cent power conversion efficiency and are said to offer designers greater flexibility.
