Datasheet ISL32704E (Intersil)

DATASHEET ISL32704E FN8860 Ultra-Low EMI, Smallest Package Isolated RS-485 Transceiver Rev.3.00 Mar 29, 2017 The ISL32704E is a galvanically isolated, differential bus Features transceiver designed for bidirectional data transmission and meeting the RS-485 and RS-422 standards for balanced • 4Mbps data rate communication. Each of the bus terminals, A and B, is • 2.5kVRMS isolation per UL 1577 protected against ±15kV ESD strikes without latch-up. • 600VRMS working voltage per VDE 0884 The device uses Giant Magnetoresistance (GMR) as isolation • 3V to 5V power supplies technology. A unique ceramic/polymer composite barrier provides excellent isolation and virtually unlimited barrier life. • Single unit load receiver input The part is available in a 16 Ld QSOP package offering • Driver drives up to 150 unit loads unprecedented miniaturization, and in a 16 Ld wide-body SOIC • 50kV/µs (typical), 30kV/µs (minimum) common-mode package providing true 8 millimeter creepage distance. transient immunity The ISL32704E delivers a minimum differential output voltage • 44000 years barrier life of 1.5V into a 54Ω differential load for excellent data integrity • 15kV ESD bus-pin protection over long cable lengths. • Thermal shutdown protection The device is compatible with 3V and 5V input supplies, • -40°C to +85°C temperature range allowing interface to standard microcontrollers without additional level shifting. • Meets or exceeds ANSI RS-485 • 16 Ld QSOP and 0.3” true 8mm 16 Ld SOIC packages Current limiting and thermal shutdown features protect against output short circuits and bus contention that may • UL 1577 recognized cause excessive power dissipation. Receiver inputs feature a • VDE V0884-11 certification pending “fail-safe if open” design, ensuring a logic high R-output if A/B are floating. Applications Related Literature • Factory automation • For a full list of related documents, visit our website • Security networks - ISL32704E product page • Building environmental control systems • Industrial/process control networks • Level translators (i.e., RS-232 to RS-485) Isolation Isolation Barrier 5V 100n 3.3V 100n 100n 5V 3.3V Barrier 100n 1 16 16 1 VDD1 VDD2 VDD2 VDD1 11 11 VDD2X VDD2X 2 15 15 2 R ISODE 542R ISODE R 4 12 12 4 RE XDE XDE RE 5 9 9 5 DE A A DE 6 10 135R 120R 10 6 D B B D 13 13 ISOR ISOR GND1 GND2 542R GND2 GND1 3 14 14 3
ISL32704EIAZ ISL32704EIAZ
Isolation Isolation Barrier 5V 100n 3.3V 100n 100n 5V Barrier 3.3V 100n 1 16 16 1 542R VDD1 VDD2 VDD2 VDD1 3 3 R 12 12 R 4 A A 4 RE 13 135R 120R 13 RE 5 B B 5 DE 10 10 DE 6 ISODE ISODE 6 D D GND1 GND2 542R GND2 GND1 2,8 9,15 9,15 2,8
ISL32704EIBZ ISL32704EIBZ
FIGURE 1. TYPICAL ISOLATED HIGH-SPEED RS-485 APPLICATIONS FN8860 Rev.3.00 Page 1 of 13 Mar 29, 2017 Document Outline Related Literature Features Applications Ordering Information Pin Configurations Truth Table Truth Table Pin Descriptions Typical Operating Circuits Absolute Maximum Ratings (Note 16) Thermal Information Recommended Operating Conditions Electrical Specifications Insulation Specifications Magnetic Field Immunity (Note 16) Safety and Approvals VDE V 0884-11 (Certification Pending) UL 1577 Electromagnetic Compatibility Application Information RS-485 and Isolation Digital Isolator Principle GMR Resistor in Detail Low Emissions Low EMI Susceptibility Receiver (Rx) Features Driver (Tx) Features Built-In Driver Overload Protection Dynamic Power Consumption Power Supply Decoupling DC Correctness Data Rate, Cables, and Terminations Transient Protection Pinout Differences Between Packages Revision History About Intersil Package Outline Drawing M16.15B M16.3A