The MAX4800/MAX4801/MAX4802 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 digital
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 MAX4800/MAX4801/MAX4802 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 +13.2V. Digital inputs DIN, CLK, active-low LE, and CLR
are +13.2V tolerant, independent of the VDD supply
voltage. The MAX4802 provides integrated 35kΩ bleed
resistors on each switch terminal to discharge capacitive
loads.
The MAX4800 and MAX4802 are drop-in replacements
for the Supertex HV20220 and HV232. The devices are
available in the 48-pin TQFP, 26-bump CSBGA, 28-pin
PLCC, and 48-pin TQFN packages. The MAX4801 is a
drop-in replacement for the Supertex HV20320 and is
available in the 28-pin PLCC package. All devices are
specified for the commercial 0°C to +70°C temperature
range.
Key Features
Applications/Uses
Pin-Compatible Replacement for Supertex HV20220 (MAX4800)
Pin-Compatible Replacement for Supertex HV20320 (MAX4801)
Pin-Compatible Replacement for Supertex HV232 (MAX4802)
Flexible High-Voltage Supplies Up to VPP - VNN = 200V
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