MAX4800A, MAX4802A

Low-Charge-Injection, 8-Channel, High-Voltage Analog Switches with 20MHz Serial Interface

Series Offers Low Charge Injection, Low Capacitance, and Fast SPI Interface
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Active: In Production.


The MAX4800A/MAX4802A provide high-voltage switching on eight channels for ultrasonic imaging and printer applications. The devices utilize BCDMOS process technology to provide eight high-voltage low-charge-injection SPST switches, controlled by a 20MHz serial interface. Data is clocked into an internal 8-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 devices operate with a wide range of high-voltage supplies including: VPP/VNN = +100V/-100V, +185V/-15V, and +40V/-160V. The digital interface operates from a separate VDD supply from +2.7V to +6V. Digital inputs DIN, CLK, active-low LE, and CLR are +6V tolerant, independent of the VDD supply voltage. The MAX4802A provides integrated 35kΩ bleed resistors on each switch terminal to discharge capacitive loads.

The devices are drop-in replacements for the Supertex HV2203 and HV2303. They are available in the 48-pin LQFP, 26-bump CSBGA, and 28-pin PLCC packages. All devices are specified for the commercial 0°C to +70°C temperature range.

Data Sheet

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Key Features

  • Fast SPI™ Interface 20MHz
  • Pin-Compatible Replacement for Supertex HV2203 (MAX4800A)
  • Pin-Compatible Replacement for Supertex HV2303 (MAX4802A)
  • Flexible High-Voltage Supplies Up to VPP - VNN = 200V
  • Low-Charge-Injection, Low-Capacitance 22Ω Switches
  • DC to 50MHz Analog-Signal Frequency Range
  • -77dB Off-Isolation at 5MHz
  • Low 10µA Quiescent Current
  • Integrated Bleed Resistors (MAX4802A Only)
  • Available in Standard PLCC, LQFP, and CSBGA Packages


  • Printers
  • Ultrasound Imaging

Key Specifications:

Switches and Multiplexers (Mid and High Voltage)
Part Number Functions Config. Channels Normal Position VSUPPLY (Single)
VSUPPLY (Single)
min max min max max min max See Notes
MAX4800A  Switch SPST 8 Open 40 200 40 100 20 2000 5000 5000 36 11 $13.72 @1k
MAX4802A  50
See All Switches and Multiplexers (Mid and High Voltage) (312)

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.


MAX4800A, MAX4802A: Functional Diagram
Functional Diagram

More Information

New Product Press Release   2008-07-30 ]

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Information Index

Document Ref.: 19-4120 Rev 1; 2011-04-07
This page last modified: 2011-04-07