ISL3180EIBZ-T

Intersil’s ISL3179E and ISL3180E are high ESD Protected 3.3V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. Each device has low bus currents (+220µA/-150µA), so it presents a “1/5 unit load” to the RS-485 bus. This allows up to 160 transceivers on the network without violating the RS-485 specification’s 32 unit load maximum, and without using repeaters. Receiver (Rx) 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 ISL3180E is configured for full duplex applications.

• High ESD protection on RS-485 I/O pins
  • ISL3180E : ±12kV HBM
  • Class 3 HBM level on all other pins (ISL3179E) >9kV
• Specified for +125°C operation
• High data rates up to 40Mbps
• 5V tolerant logic inputs
• 1/5 unit load allows up to 160 devices on the bus
• Full fail-safe (open, shorted, terminated/undriven) receiver
• Hot plug - Tx and Rx outputs remain three-state during power-up
• Low quiescent current : 4mA (max)
• Low current shutdown mode : 1µA (max)
• -7V to +12V common-mode input voltage range
• Three-state Rx and Tx outputs
• 16/16.5ns (max) Tx/Rx propagation delays; 1.5ns (max) skew
• Operates from a single +3.3V supply (10% tolerance)
• Current limiting and thermal shutdown for driver overload protection
• Pb-free (RoHS compliant)