MAX14803, MAX14803A

Low-Charge-Injection, 16-Channel, High-Voltage Analog Switches

Series Offers Low-Charge Injection, Integrated Overvoltage Protection, Low Capacitance, and Fast SPI Interface

Please check latest availability status for a specific part variant.


The MAX14802/MAX14803/MAX14803A provide high-voltage switching on 16 channels for ultrasonic imaging and printer applications. The devices utilize HVCMOS process technology to provide 16 high-voltage low-charge-injection SPST switches, controlled by a digital interface. Data is clocked into an internal 16-bit shift register and retained by a programmable latch with enable and clear inputs. A power-on reset function ensures that all switches are open on power-up.

The MAX14802/MAX14803/MAX14803A operate with a wide range of high-voltage supplies including VPP/VNN = +100V/-100V, +200V/0V, or +40V/-160V. The digital interface operates from a separate +2.7V to +5.5V VDD supply. Digital inputs DIN, CLK, active-low LE, and CLR operate on the VDD supply voltage.

The MAX14803/MAX14803A provide integrated 35kΩ bleed resistors on each switch terminal to discharge capacitive loads. The MAX14802/MAX14803/MAX14803A provide integrated clamping diodes for overvoltage protection against positive overshoot.

The MAX14802 is available in a 48-pin TQFP package and is specified for commercial 0°C to +70°C and extended -40°C to +85°C temperature ranges.

The MAX14803 is available in a 48-pin TQFP package and is specified for the commercial 0°C to +70°C temperature range.

The MAX14803A is available in the 110-bump wafer level package (WLP) and is specified at the -40°C to +85°C temperature range.
MAX14800, MAX14801, MAX14802, MAX14803: Functional Diagram MAX14800, MAX14801, MAX14802, MAX14803: Functional Diagram Enlarge+

Key Features

  • Integrated Overvoltage Protection
  • 20MHz Serial Interface (5V)
  • HVCMOS Technology for High Performance
  • Individually Programmable High-Voltage Analog Switches
  • Very Low 5µA (typ) Quiescent Current
  • DC-to-20MHz Low-Voltage Analog Signal Frequency Range
  • 2.7V to 5.5V Logic Supply Voltage
  • Low-Charge Injection, Low-Capacitance RL Switches
  • -77dB (typ) Off-Isolation at 5MHz (RL = 50Ω)
  • Daisy-Chainable Serial Interface
  • Flexible High-Voltage Supplies (VPP - VNN = 250V)


  • Printers
  • Ultrasound Imaging

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Product Reliability Reports: MAX14803.pdf 
Request Reliability Report for: MAX14803A 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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