MAX14851 Six-Channel Digital Isolator General Description Benefits and Features The MAX14851 is a six-channel digital isolator utilizing Complete Digital Isolation Solution Maxims proprietary process technology, whose mono- 600V Isolation for 60 Seconds RMS lithic design provides a compact and low-cost transfer Short-Circuit Protection on Unidirectional Outputs 200V Working Isolation Voltage of digital signals between circuits with different power RMS domains. The technology enables low power consump- Four Unidirectional Signal Paths: 2-In/2-Out Two Bidirectional Open-Drain Signal Paths tion and high channel density. 50Mbps (max) Unidirectional Data Rate The four unidirectional channels are each capable of DC 2Mbps (max) Bidirectional Data Rate to 50Mbps, with two of the four channels passing data Compatible with Many Interface Standards across the isolation barrier in each direction. The two 2 bidirectional channels are open-drain, each capable of I C SPI data rates from DC to 2Mbps. RS-232, RS-485/RS-422 Independent 3.0V to 5.5V supplies on each side of the SMBus, PMBus Interfaces isolator also make it suitable for use as a level translator. 2 The MAX14851 can be used for isolating SPI buses, I C Ordering Information appears at end of data sheet. buses, RS-232, RS-485/RS-422 buses, and general-pur- pose isolation. When used as a bus isolator, extra chan- nels are available for power monitoring and reset signals. Functional Diagram The MAX14851 is available in a 16-pin QSOP (3.9mm x 4.94mm) package. The device is specified over the -40C VCCA VCCB to +125C temperature range. MAX14851 Applications Industrial Control Systems 2 I C, SPI, SMBus, PMBus Interfaces INA1 OUTB1 Isolated RS-232, RS-485/RS-422 Telecommunication Systems INA2 OUTB2 Battery Management Medical Systems OUTA1 INB1 600V RMS OUTA2 INB2 DIGITAL ISOLATOR I/OA1 I/OB1 I/OA2 I/OB2 GNDA GNDB PMBus is a trademark of SMIF, Inc. 19-100058 Rev 0 6/17MAX14851 Six-Channel Digital Isolator Absolute Maximum Ratings V to GNDA ........................................................-0.3V to +6V I/OB1, I/OB2 Continuous Current ...................................100mA CCA V to GNDB ........................................................-0.3V to +6V Continuous Power Dissipation (T = +70C) CCB A OUTA1, OUTA2 to GNDA .......................-0.3V to (V + 0.3V) QSOP (derate 9.6mW/C above +70C) ..................771.5mW CCA OUTB1, OUTB2 to GNDB ......................-0.3V to (V + 0.3V) Junction Temperature ......................................................+150C CCB INA1, INA2 to GNDA ...............................................-0.3V to +6V Storage Temperature Range ............................ -65C to +150C I/OA1, I/OA2 to GNDA ............................-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C CCA INB1, INB2, I/OB1, I/OB2 to GNDB ........................-0.3V to +6V OUTA1, OUTA2, OUTB1, OUTB2 Continuous Current ...30mA I/OA1, I/OA2 Continuous Current .....................................30mA (Note 1) Package Thermal Characteristics QSOP Junction-to-Ambient Thermal Resistance ( ) .....103.7C/W JA Junction-to-Case Thermal Resistance ( ) ...............37C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC Electrical Characteristics (V - V = 3.0V to 5.5V, V - V = 3.0V to 5.5V, T = -40C to +125C, unless otherwise noted. Typical values are at CCA GNDA CCB GNDB A V - V = 3.3V, V - V = 3.3V, and T = +25C.) (Note 2) CCA GNDA CCB GNDB A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT VOLTAGE SUPPLY V Relative to GNDA 3.0 5.5 CCA Supply Voltage V V Relative to GNDB 3.0 5.5 CCB V = +5V 4 6.9 CCA V = +5V 3.6 6.1 All inputs static at GND CCB or VCC . No load. V = +3.3V 3.6 6.2 CCA V = +3.3V 3.2 5.5 I , CCB CCA Supply Current mA I CCB V = +5V 6.4 10.2 CCA All inputs switching V = +5V 5.8 9.2 CCB (INA , INB at 50Mbps and I/OA at 2Mbps). V = +3.3V 4.6 7.6 CCA No load. (Note 3) V = +3.3V 4.1 6.7 CCB Undervoltage Lockout V V rising (Note 4) 2.45 2.6 2.85 V UVLO CC Threshold Undervoltage Lockout V (Note 4) 55 mV UVLOHYS Hysteresis Maxim Integrated 2 www.maximintegrated.com