DATASHEET ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, FN6543 Rev 4.00 ISL3285E July 27, 2015 The Intersil ISL3280E, ISL3281E, ISL3282E, ISL3283E, Features ISL3284E, ISL3285E are 16.5kV IEC61000 ESD Protected, IEC61000 ESD protection on RS-485 inputs . 16.5kV 3.0V to 5.5V powered, single receivers that meet both the RS-485 and RS-422 standards for balanced communication. - Class 3 ESD level on all other pins >5kV HBM These receivers have very low bus currents (+125A/-100A), Pb-free (RoHS compliant) so they present a true 1/8 unit load to the RS-485 bus. This Wide supply range . 3.0V to 5.5V allows up to 256 receivers on the network without violating the RS-485 specifications 32 unit load maximum and without using Specified for +125C operation repeaters. Logic supply pin (V ) eases operation in mixed supply L Receiver inputs feature a Full Fail-Safe design, which ensures systems (ISL3282E, ISL3284E, ISL3285E only) a logic high Rx output if Rx inputs are floating, shorted, or Full fail-safe (open, short, terminated/undriven) terminated but undriven. True 1/8 unit load allows up to 256 devices on the bus The ISL3280E and ISL3284E feature an always enabled Rx High data rates up to 20Mbps the ISL3281E and ISL3285E feature an active high Rx enable pin and the ISL3282E and ISL3283E include an active low Low quiescent supply current . 500A (max) enable pin. All versions are offered in Industrial and Extended - Very low shutdown supply current 20A (max) Industrial (-40C to +125C) temperature ranges. -7V to +12V common mode input voltage range A 26% smaller footprint is available with the ISL3282E and Tri-statable Rx available (active low or high EN input) ISL3285E TDFN package. These devices, plus the ISL3284E, also feature a logic supply pin (V ) that sets the V level of 5V tolerant logic inputs when VCC 5V L OH the RO output (and the switching points of the RE/RE input) to be compatible with another supply voltage in mixed voltage Applications systems. Clock distribution For companion single RS-485 transmitters in micro packages, High node count systems please see the ISL3293E datasheet. Space constrained systems Security camera networks Building environmental control/lighting systems Industrial/process control networks TABLE 1. SUMMARY OF FEATURES DATA RATE DEVICES RX QUIESCENT I LOW POWER LEAD CC PART NUMBER FUNCTION (Mbps) ON BUS ENABLE V PIN (A) SHUTDOWN COUNT L ISL3280E 1 Rx 20 256 NO NO 350 NO 5-SOT ISL3281E 1 Rx 20 256 ACTIVE HIGH NO 350 YES 6-SOT ISL3282E 1 Rx 20 256 ACTIVE LOW YES 350 YES 8-TDFN ISL3283E 1 Rx 20 256 ACTIVE LOW NO 350 YES 6-SOT ISL3284E 1 Rx 20 256 NO YES 350 NO 6-SOT ISL3285E 1 Rx 20 256 ACTIVE HIGH YES 350 YES 8-TDFN (No longer available or supported) FN6543 Rev 4.00 Page 1 of 16 July 27, 2015ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Pin Configurations ISL3280E ISL3281E (5 LD SOT-23) (6 LD SOT-23) TOP VIEW TOP VIEW V 1 5 A V 1 6 A CC CC GND 2 R GND 2 R 5 RE RO 3 4 B RO 3 4 B ISL3282E ISL3283E (8 LD TDFN) (6 LD SOT-23) TOP VIEW TOP VIEW V 1 6 A CC RO B 1 8 GND 2 R 5 RE GND 2 RE 7 R RO 3 4 B NC V 3 6 L V 4 5 A CC ISL3284E ISL3285E (6 LD SOT-23) (8 LD TDFN) TOP VIEW TOP VIEW V 1 6 A CC RO B 1 8 GND 2 R 5 V L GND 2 7 RE R RO 3 4 B NC V 3 6 L V 4 5 A CC FN6543 Rev 4.00 Page 2 of 16 July 27, 2015 NO LONGER AVAILABLE OR SU PPORTED