ISL32705EIBZ-T7A Renesas

DATASHEET ISL32705E FN8949 Rev.2.00 Low-EMI Isolated Full-Duplex RS-485 Transceiver Jan 11, 2018 The ISL32705E is a galvanically isolated, full-duplex Features differential bus transceiver, designed for bidirectional 4Mbps data rate data transmission meeting the RS-485 and RS-422 2.5kV isolation/600V working voltage RMS RMS standards for balanced communication. All bus terminals are protected against 7kV ESD strikes without latch-up. 3V to 5V power supplies The device uses Giant Magnetoresistance (GMR) as Drives up to 44 devices on an isolated bus isolation technology. A unique ceramic/polymer 50kV/s (typical), 30kV/s (minimum) composite barrier provides excellent isolation and nearly common-mode transient immunity unlimited barrier life. 44,000 year barrier life The part is available in a 16 Ld wide-body SOIC package providing true 8mm creepage distance. 7kV ESD protection The ISL32705E delivers a minimum of 1.5V into a 54 Low EMC footprint differential load for excellent data integrity over long Thermal shutdown protection cable lengths. -40C to +85C temperature range The device is compatible with 3V and 5V input supplies, Meets or exceeds ANSI RS-485 allowing an interface to standard microcontrollers without additional level shifting. 0.3 true 8mm 16 Ld SOIC package Current limiting and thermal shutdown features protect UL 1577 recognized against output short-circuits and bus contention that may VDE V 0884-10 certified cause excessive power dissipation. Receiver inputs feature a fail-safe if open design, ensuring a logic high Applications R-output if A/B are floating. Factory automation Related Literature Security networks For a full list of related documents, visit our website Building environmental control systems ISL32705E product page Industrial/process control networks Level translators (for example, RS-232 to RS-485) Equipment covered under IEC 61010-1 Edition 3 ISOLATION ISOLATION BARRIER BARRIER 3.3V 5V 5V 3.3V 100n 100n 100n 100n 1 16 16 1 VDD1 VDD2 R R VDD2 VDD1 B B 3 14 11 6 R A Y D 13 R 12 T 4 5 B Z RE DE 11 14 Y A 5 4 DE 12 R 13 RE T Z B 6 3 10 10 D R ISODE ISODE R R B B GND1 GND2 GND2 GND1 2,8 9,15 9,15 2,8 ISL32705EIBZ ISL32705EIBZ Figure 1. Typical Isolated Full-Duplex RS-485 Application FN8949 Rev.2.00 Page 1 of 20 Jan 11, 2018ISL32705E 1. Overview 1. Overview 1.1 Typical Operating Circuit ISO DC-DC 1 16 Vs VDD1 VDD2 100n 100n 100n 2 15 R GND1 GND2 B 10k VDD 3 R A 14 RxD A R 4 RE B 13 T REN B MCU 5 DE Z 12 DEN Z 6 D Y 11 TxD Y DGND 3 x 7 ISODE 10 NC R B 10k 8 9 GND GND1 GND2 ISL32705E Figure 2. Typical Operating Circuit 1.2 Ordering Information Part Number Temp. Range Package (Notes 1, 2, 3)Part Marking (C) (RoHS Compliant) Pkg. Dwg. ISL32705EIBZ 32705EIBZ -40 to +85 16 Ld SOICW M16.3A ISL32705EVAL1Z Evaluation board for ISL32705EIBZ Notes: 1. Add -T suffix for 1k unit or -T7A suffix for 250 unit tape and reel options. Refer to TB347 for details on reel specifications. 2. Pb-free plus anneal products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. 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 page for the ISL32705E. For more information on MSL, see TB363. Table 1. Key Differences Between Family of Parts V V Data Rate Isolation Voltage DD1 DD2 Part Number Full/Half Duplex (V) (V) (Mbps) (kV ) RMS ISL32704E Half 3.0 5.5 4.5 5.5 4 2.5 ISL32705E Full 3.0 5.5 4.5 5.5 4 2.5 ISL32740E Half 3.0 5.5 4.5 5.5 40 2.5 ISL32741E Half 3.0 5.5 4.5 5.5 40 6 FN8949 Rev.2.00 Page 2 of 20 Jan 11, 2018