IL3522 High Speed Isolated RS485/RS422 Transceiver Functional Diagram Features 40 Mbps data rate 20 ns propagation delay 1 ns pulse skew DE ISODE 50 kV/ s typ. 30 kV/ s min. common mode transient immunity 5 kV isolation / 10 kV surge / 1 kV working voltage (V-Series) RMS RMS 3 V to 5 V power supplies Y D 44000 year barrier life Z 15 kV bus ESD protection A R Low EMC footprint B Thermal shutdown protection RE 40C to +85C temperature range IEC 60747-5-5 / VDE 0884-10 certified UL 1577 recognized 16-pin JEDEC-standard or True 8 mm SOIC packages IL3522 Applications Factory automation IL3522 Receiver IL3522 Driver Industrial control networks RE R V DE D V (AB) (YZ) Building environmental controls H Z X L X Z Equipment covered under IEC 61010-1 Edition 3 L H 200 mV H H 200 mV 5 kV rated IEC 60601-1 medical applications RMS L L 200 mV H L 200 mV L H Open Description The IL3522 is a galvanically isolated, high-speed differential bus H = High Level, L = Low Level transceiver, designed for bidirectional data communication on X = Irrelevant, Z = High Impedance balanced transmission lines. The device uses NVEs patented* IsoLoop spintronic Giant Magnetoresistance (GMR) technology. A unique ceramic/polymer composite barrier provides excellent isolation and virtually unlimited barrier life. The IL3522 delivers an exceptional 2.3 V differential output into a 54 load over the supply range of 4.5 V to 5.5 V. This provides better data integrity over longer cable lengths, even at data rates as high as 40 Mbps. The device is also compatible with 3 V supplies, allowing interface to standard microcontrollers without additional level shifting. Current limiting and thermal shutdown features protect against output short circuits and bus contention that may cause excessive power dissipation. Receiver inputs feature a fail-safe if open design, ensuring a logic high R-output if A/B are floating. IsoLoop is a registered trademark of NVE Corporation. REV. P *U.S. Patent number 5,831,426 6,300,617 and others. NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com NVE Corporation IL3522 (11) Absolute Maximum Ratings Parameters Symbol Min. Typ. Max. Units Test Conditions Storage Temperature T 55 150 C S Ambient Operating Temperature T 40 85 C A Voltage Range at any Bus Pin 7 12 V (1) Supply Voltage V , V 0.5 7 V DD1 DD2 Digital Input Voltage 0.5 V + 0.5 V DD Digital Output Voltage 0.5 V + 1 V DD ESD (all bus nodes) 15 kV HBM Recommended Operating Conditions Parameters Symbol Min. Typ. Max. Units Test Conditions V 3.0 5.5 DD1 Supply Voltage V V 4.5 5.5 DD2 Input Voltage at any Bus Terminal V 12 I V (separately or common mode) V 7 IC 2.4 V = 3.3 V DD1 High-Level Digital Input Voltage V V V IH DD1 3.0 V = 5.0 V DD1 Low-Level Digital Input Voltage V 0 0.8 V IL (2) Differential Input Voltage V +12/ 7 V ID High-Level Output Current (Driver) I 60 mA OH High-Level Digital Output Current I 8 mA OH (Receiver) Low-Level Output Current (Driver) I 60 mA OL Low-Level Digital Output Current I 8 mA OL (Receiver) Ambient Operating Temperature T 40 85 C A Digital Input Signal Rise and Fall t , t DC Stable IR IF Times 2 NVE Corporation 11409 Valley View Road, Eden Prairie, MN 55344-3617 Phone: (952) 829-9217 Fax: (952) 829-9189 www.IsoLoop.com NVE Corporation