HI-549: Differential 4-Channel CMOS Analog MUXs with Active Overvoltage Protection

The HI-546, HI-547, HI-548 and HI-549 are analog multiplexers with active overvoltage protection and guaranteed rON matching. Analog input levels may greatly exceed either power supply without damaging the device or disturbing the signal path of other channels. Active protection circuitry assures that signal fidelity is maintained even under fault conditions that would destroy other multiplexers.

Analog inputs can withstand constant 70VP-P levels with ±15V supplies. Digital inputs will also sustain continuous faults up to 4V greater than either supply. In addition, signal sources are protected from short circuiting should multiplexer supply loss occur. Each input presents 1kΩ of resistance under this condition. These features make the HI-546, HI-547, HI-548 and HI-549 ideal for use in systems where the analog inputs originate from external equipment or separately powered circuitry. All devices are fabricated with 44V Dielectrically Isolated CMOS technology. The HI-546 is a single 16-Channel, the HI-547 is an 8-Channel differential, the HI-548 is a single 8-Channel and the HI-549 is a 4-Channel differential device. If input overvoltage protection is not needed the HI-506, HI-507, HI-508, HI-509 multiplexers are recommended. For further information see Application Notes AN520 and AN521.

For MIL-STD-883 compliant parts, request the HI-546/883, HI-547/883, HI-548/883 and HI-549/883 datasheets.

Key Features
  • Analog Overvoltage Protection 70VP-P
  • No Channel Interaction During Overvoltage
  • Guaranteed rON Matching
  • Maximum Power Supply 44V
  • Break-Before-Make Switching
  • Analog Signal Range ±15V
  • Access Time (Typical) 500ns
  • Standby Power (Typical) 7.5mW
  • Pb-Free Plus Anneal Available (RoHS Compliant)
Typical Diagram
Application Notes
TitleTypeUpdatedSizeOther Languages
AN9867: End of Life Derating: A Necessity or Over KillPDF13 Nov 201435 KB
AN557: Recommended Test Procedures for Analog SwitchesPDF13 Nov 2014137 KB
AN520: CMOS Analog Multiplexers and Switches; Specifications and Applications ConsiderationsPDF13 Nov 2014120 KB
AN1033: Multiplexed Data Acquisition System ConsiderationsPDF13 Nov 2014163 KB
AN1034: Analog Switch and Multiplexer ActionsPDF13 Nov 2014166 KB
AN1032: Multiplexed Data Acquisition System ConsiderationsPDF13 Nov 201488 KB
Datasheets
TitleTypeUpdatedSizeOther Languages
HI-546, HI-547, HI-548, HI-549 DatasheetPDF15 Jun 2016740 KB
Miscellaneous
TitleTypeUpdatedSizeOther Languages
Intersil Commercial Lab ServicesPDF18 Nov 2014364 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
HI1-0549-216 Ld CERDIP2.1316N/ANA
HI3-0549-516 Ld PDIP1.016N/ANA
HI3-0549-5Z16 Ld PDIP1.016N/ANARoHS
HI4P0549-520 Ld PLCC0.74203225
HI4P0549-5Z20 Ld PLCC0.74203250RoHS
HI9P0549-516 Ld SOIC0.1416240
HI9P0549-916 Ld SOIC0.14161240
HI9P0549-9Z16 Ld SOIC0.14163260RoHS
HI-546, HI-547, HI-548, HI-549 Datasheet 15 Jun 2016
16 Ld CERDIP HI-508
16 Ld PDIP HI-508
20 Ld PLCC HI-508
16 Ld SOIC T+R ISL84523
AN9867: End of Life Derating: A Necessity or Over Kill 13 Nov 2014
AN557: Recommended Test Procedures for Analog Switches 13 Nov 2014
AN520: CMOS Analog Multiplexers and Switches; Specifications and Applications Considerations 13 Nov 2014
AN1033: Multiplexed Data Acquisition System Considerations 13 Nov 2014
AN1034: Analog Switch and Multiplexer Actions 13 Nov 2014
AN1032: Multiplexed Data Acquisition System Considerations 13 Nov 2014
Intersil Commercial Lab Services 18 Nov 2014