MAX4578:High-Voltage, Single 8-to-1/Dual 4-to-1 Cal Multiplexers

The MAX4578/MAX4579 are high-voltage, 8-channel CMOS multiplexers. The MAX4578 and dual 4-channel MAX4579 are ideal for precision ADC calibration and system self-monitoring applications. These calibration multiplexers (cal-muxes) have precision resistor-dividers to generate accurate voltage ratios from an input reference voltage. The reference ratios include 15/4096 and 4081/4096 of the external reference voltage, accurate to 15 bits, and 1/2(V+) and 5/8(V+ - V-), accurate to 8 bits. The external reference voltage as well as ground can also be switched to the output. The MAX4578/MAX4579 have enable inputs and address latching. All digital inputs have 0.8V and 2.4V logic thresholds, ensuring both TTL- and CMOS-logic compatibility when using a single +12V or dual ±15V supplies. Protection diodes at all inputs provide >2kV ESD rating. The MAX4578/MAX4579 operate from a single +4.5V to +36V supply or from dual supplies of ±4.5V to ±20V. On-resistance (350Ω max) is matched between switches to 15Ω max. Each switch can handle Rail-to-Rail analog signals. The off-leakage current is 20pA at TA = +25°C and 1.25nA at TA = +85°C. The MAX4578/MAX4579 are available in small 20-pin SSOP, SO, and DIP packages.

Key Features
  • On-Chip Gain and Offset Divider Networks Provide 15-Bit Accurate Output Ratios
  • On-Chip V+ to GND and V+ to V- Divider Networks Provide 8-Bit Accurate Output Ratios
  • 350Ω (max) RON
  • 12Ω (max) RON Matching Between Channels
  • 10pC (max) Charge Injection
  • Guaranteed 20pA Off-Leakage Current
  • Rail-to-Rail Signal Handling
  • Small 20-Pin SSOP, SO, DIP Packages
MAX4579: Functional Diagram
MAX4579: Functional Diagram
Applications/Uses
  • Audio-Signal Routing
  • Avionics
  • Data Acquisition
  • Networking
  • Test Equipment
DataSheet
titleDownload file
MAX4578-MAX4579 Data SheetMAX4578-MAX4579.pdf
Parametrics
Part NumberFunctionsConfig.ChannelsVSUPPLY (Single)
(V)
VSUPPLY (Single)
(V)
VSUPPLY (Dual)
(±V)
VSUPPLY (Dual)
(±V)
RON
(Ω)
IL(OFF)
(nA)
tON
(ns)
tOFF
(ns)
QINJECTION
(pC)
CON
(pF)
COFF
(pF)
Package/PinsBudgetary
Price
minmaxminmaxmaxmaxminmaxSee Notes
MAX4578Mux8-to-114.5364.5203500.054002203.5203PDIP(N)/20
SOIC(W)/20
SSOP/20
$3.86 @1k
MAX45794-to-12PDIP(N)/20
SOIC(W)/20
SSOP/20
-
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4578C/DNo Longer AvailableDICE SALES,;NA pin;DICE;0°C to +70°CSee data sheet
MAX4578CAPNo Longer AvailableMAX4578CAP+SSOP,;20 pin;57.9 mm²0°C to +70°CNo
MAX4578CAP+ActiveSSOP,;20 pin;57.9 mm²0°C to +70°CLead Free
MAX4578CAP-TNo Longer AvailableSSOP;20 pin0°C to +70°CSee data sheet
MAX4578CPPLast Time BuyPDIP(N),;20 pin;217.1 mm²0°C to +70°CNo
MAX4578CWPNo Longer AvailableMAX4578CWP+SOIC(W),;20 pin;138.5 mm²0°C to +70°CNo
MAX4578CWP+ActiveSOIC(W),;20 pin;138.5 mm²0°C to +70°CLead Free
MAX4578CWP+TNo Longer AvailableW.SO;0°C to +70°CSee data sheet
MAX4578CWP-TNo Longer AvailableW.SO;0°C to +70°CSee data sheet
MAX4578EAPNo Longer AvailableSSOP,;20 pin;57.9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX4578EAP-TNo Longer AvailableSSOP;20 pin-40°C to +85°CSee data sheet
MAX4578EPPNo Longer AvailablePDIP(N),;20 pin;217.1 mm²-40°C to +85°CNo
MAX4578EWPNo Longer AvailableSOIC(W),;20 pin;138.5 mm²-40°C to +85°CNo
MAX4578EWP-TNo Longer AvailableW.SO;-40°C to +85°CSee data sheet
MAX4578-MAX4579.pdf MAX4579
MAX4578-MAX4579.pdf MAX4579