DATASHEET ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E, ISL32458E, ISL32459E FN7921 60V Fault Protected, 3.3V to 5V, 20V Common-Mode Range, RS-485/RS-422 Rev.2.00 Aug 31, 2017 Transceivers with Cable Invert and 15kV ESD The ISL3245xE are 3.3V to 5V powered, fault protected, Features extended Common-Mode Range (CMR) differential Fault protected RS-485 bus pins up to 60V transceivers for balanced communication. The RS-485 bus pins (driver outputs and receiver inputs) are protected against Extended common-mode range 20V overvoltages up to 60V, and against 15kV ESD strikes. larger than required for RS-485 These transceivers operate in environments with common- 15kV HBM ESD protection on RS-485 bus pins mode voltages up to 20V (exceeds the RS-485 requirement), Wide supply range 3V to 5.5V making this RS-485 family one of the more robust on the market. Cable invert pin (ISL32457E and ISL32459E only) corrects for reversed cable connections while maintaining Transmitters are RS-485 compliant with V 4.5V and CC Rx full fail-safe functionality deliver a 1.1V differential output voltage into the RS-485 specified 54 load even with V =3V. Receiver (Rx) inputs 1/4 unit load for up to 128 devices on the bus CC feature a Full Fail-Safe design, which ensures a logic-high Rx High transient overvoltage tolerance 80V output if Rx inputs are floating, shorted, or on a terminated but Full fail-safe (open, short, terminated) RS-485 receivers undriven (idle) bus. Rx full fail-safe operation is maintained even when the Rx input polarity is switched (cable invert function on Choice of RS-485 data rates up to 20Mbps ISL32457E and ISL32459E). Low quiescent supply current . 2.1mA The ISL32457E and ISL32459E include a cable invert function that reverses the polarity of the Rx and Tx bus pins in case the Applications cable is misconnected during installation. Utility meters and automated meter reading systems See Table 1 on page 2 for key features and configurations by Air conditioning systems device number. Security camera networks Building lighting and environmental control systems Related Literature Industrial and process control networks ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E, ISL32458E, and ISL32459E product pages 20 V = 3V CC A 20 12 B VID = 1V 2Mbps 15 0 10 -7 5 RO 0 -20 STANDARD RS-485 ISL3245XE TIME (200ns/DIV) TRANSCEIVER FIGURE 1. EXCEPTIONAL ISL32453E RX OPERATES AT >1Mbps FIGURE 2. TRANSCEIVERS DELIVER SUPERIOR COMMON-MODE EVEN WITH 20V COMMON-MODE VOLTAGE RANGE vs STANDARD RS-485 DEVICES FN7921 Rev.2.00 Page 1 of 23 Aug 31, 2017 VOLTAGE (V) COMMON-MODE RANGE (V)ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E, ISL32458E, ISL32459E TABLE 1. SUMMARY OF FEATURES PART HALF/FULL DATA RATE SLEW-RATE EN HOT CABLE INVERT QUIESCENT I LOW POWER CC NUMBER DUPLEX (Mbps) LIMITED PINS PLUG (INV) PIN (mA) SHDN PIN COUNT ISL32450E Full 0.25 Yes Yes No No 2.1 Yes 10, 14 ISL32452E Half 0.25 Yes Yes No No 2.1 Yes 8 ISL32453E Full 1 Yes Yes No No 2.1 Yes 10, 14 ISL32455E Half 1 Yes Yes No No 2.1 Yes 8 ISL32457E Half 0.25 Yes Tx Only No Yes 2.1 No 8 ISL32458E Half 20 No Yes No No 2.1 Yes 8 ISL32459E Half 20 No Tx Only No Yes 2.1 No 8 Ordering Information PART NUMBER PART TEMP. RANGE PACKAGE PKG. (Notes 1, 2, 3) MARKING (C) (RoHS Compliant) DWG. ISL32450EIBZ ISL32450 EIBZ -40 to +85 14 Ld SOIC M14.15 ISL32450EIUZ 2450E -40 to +85 10 Ld MSOP M10.118 ISL32452EIBZ 32452 EIBZ -40 to +85 8 Ld SOIC M8.15 ISL32452EIUZ 2452E -40 to +85 8 Ld MSOP M8.118 ISL32453EIBZ ISL32453 EIBZ -40 to +85 14 Ld SOIC M14.15 ISL32453EIUZ 2453E -40 to +85 10 Ld MSOP M10.118 ISL32455EIBZ 32455 EIBZ -40 to +85 8 Ld SOIC M8.15 ISL32455EIUZ 2455E -40 to +85 8 Ld MSOP M8.118 ISL32457EIBZ 32457 EIBZ -40 to +85 8 Ld SOIC M8.15 ISL32457EIUZ 2457E -40 to +85 8 Ld MSOP M8.118 ISL32458EIBZ 32458 EIBZ -40 to +85 8 Ld SOIC M8.15 ISL32459EIBZ 32459 EIBZ -40 to +85 8 Ld SOIC M8.15 NOTES: 1. Add -T suffix for 2.5k unit or -T7A suffix for 250 unit tape and reel options. Refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), see the product information pages for ISL32450E, ISL32452E, ISL32453E, ISL32455E, ISL32457E, ISL32458E, ISL32459E. For more information on MSL, refer to TB363. FN7921 Rev.2.00 Page 2 of 23 Aug 31, 2017