MAX4802CTM+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4802CTM+ is an 8-channel, high-voltage analog switch manufactured by Maxim Integrated. It utilizes BCDMOS technology to provide low-charge-injection SPST switches controlled via a serial interface. The device supports flexible high-voltage supplies with VPP - VNN up to 200V, including configurations like +100V/-100V and +40V/-160V. Digital inputs are tolerant up to +13.2V. A key feature of the MAX4802 variant is the integration of 35kΩ bleed resistors on each switch terminal for discharging capacitive loads. It operates within a commercial temperature range of 0°C to +70°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Pin-compatible replacement for Supertex HV232
• Integrated 35kΩ bleed resistors for capacitive load discharge
• Low-charge injection and low-capacitance switching performance
• Serial control interface with latch enable and clear functions

Analog Switches, Multiplexers, Demultiplexers Applications

• Ultrasound imaging systems
• Printer applications

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify that the ordering suffix CTM corresponds to the 48-pin TQFP package as specified in the selector guide. Confirm RoHS compliance status indicated by the plus sign. Ensure the specific revision level matches design requirements. Check for second-source compatibility with the HV232FG part number if supply chain flexibility is needed. Validate pinout alignment during PCB layout review.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the MAX4802 over the MAX4800 or MAX4801 when integrated bleed resistors are required to discharge piezoelectric transducers or other capacitive loads without external components. Verify that the high-voltage supply differential does not exceed 200V. Ensure the digital logic levels are compatible with the +13.2V tolerant inputs. Consider the 48-pin TQFP package constraints for thermal dissipation and board space.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4802 is part of the MAX4800/MAX4801/MAX4802 family of low-charge injection, 8-channel, high-voltage analog switches. This family shares identical pinouts and control interfaces but differs in internal features such as the presence of bleed resistors. The MAX4802 specifically serves as the drop-in replacement for the Supertex HV232, maintaining functional equivalence while offering modern manufacturing processes.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4802 is a direct pin-compatible replacement for the Supertex HV232 (specifically the HV232FG second source). Designers replacing older HV232 parts should verify that the integrated 35kΩ bleed resistors do not interfere with existing circuit operation, as these were absent in some legacy designs.