ISL3280EIHZ-T7A

The ISL3280EIHZ-T7A is ±16.5kV IEC61000 ESD Protected, 3.0V to 5.5V powered, single receivers that meet both the RS-485 and RS-422 standards for balanced communication. These receivers have very low bus currents (+125µA/-100µA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 receivers on the network without violating the RS-485 specification’s 32 unit load maximum and without using repeaters. Receiver inputs feature a “Full Fail-Safe” design, which ensures a logic high Rx output if Rx inputs are floating, shorted, or terminated but undriven. The ISL3280E feature an always enabled Rx; All versions are offered in Industrial and Extended Industrial (-40°C to +125°C) temperature ranges. These devices, plus the ISL3284E, also feature a logic supply pin (VL) that sets the VOH level of the RO output (and the switching points of the RE/RE input) to be compatible with another supply voltage in mixed voltage systems.

• IEC61000 ESD protection on RS-485 inputs ±16.5kV
  • Class 3 ESD level on all other pins >5kV HBM
• Pb-free (RoHS compliant)
• Wide supply range 3.0V to 5.5V
• Specified for +125°C operation
• Full fail-safe (open, short, terminated/undriven)
• True 1/8 unit load allows up to 256 devices on the bus
• High data rates up to 20Mbps
• Low quiescent supply current 500µA (max)
  • Very low shutdown supply current 20µA (max)
• -7V to +12V common mode input voltage range
• Tri-statable Rx available (active low or high EN input)
• 5V tolerant logic inputs when VCC = 5V