Supertex inc. HV2221 Low Charge Injection, 8-Channel, Unipolar, Negative High Voltage, Analog Switch Features General Description Low on-resistance, 14 max. The Supertex HV2221 is a low charge injection, 8-channel, HVCMOS technology for high performance unipolar, negative high voltage, analog switch integrated 3.3 or 5.0V CMOS input logic level circuit (IC) intended for use in applications requiring high 20MHz data shift clock frequency voltage switching controlled by low voltage control signals, Very low quiescent power dissipation (-10A) such as NDT ultrasound flaw detection, medical ultrasound Low parasitic capacitance imaging, piezoelectric transducer drivers, and printers. DC to 50MHz small signal frequency response Data is input into an 8-bit shift register that can then be -60dB typical off-isolation at 5MHz retained in an 8-bit latch. To reduce any possible clock feed- CMOS logic circuitry for low power through noise, the latch enable bar should be left high until all Excellent noise immunity bits are clocked in. Data is clocked in during the rising edge Cascadable serial data register with latches of the clock. Flexible operating supply voltages Applications Using HVCMOS technology, this device combines high voltage bilateral DMOS switches and low power CMOS logic NDT metal flaw detection to provide efficient control of high voltage analog signals. Medical ultrasound imaging Piezoelectric transducer drivers Inkjet printer heads Optical MEMS modules Block Diagram Level Output Latches Shifters Switches D LE SW0 CLR D LE SW1 CLK CLR 8-Bit D LE Shift SW2 CLR DIN Register DOUT D LE SW6 CLR D LE SW7 CLR VDD GND LE CLR VNN VPP Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com HV2221 Pin Configuration Ordering Information 48 48-Lead LQFP 1 7.00x7.00mm body Device 1.60mm height (max) 0.50mm pitch HV2221 HV2221FG-G -G indicates package is RoHS compliant (Green) 48-Lead LQFP (FG) (top view) Absolute Maximum Ratings Product Marking Parameter Value Top Marking V logic supply -0.5V to +7.0V YYWW YY = Year Sealed DD HV2221FG WW = Week Sealed LLLLLLLLL V -V differential supply 260V PP NN L = Lot Number V positive supply -0.5V to V +260V C = Country of Origin* PP NN Bottom Marking A = Assembler ID* V negative supply +0.5V to -250V NN CCCCCCCC = Green Packaging AAA Logic input voltage -0.5V to V +0.3V *May be part of top marking DD Analog signal range V to V NN PP Package may or may not include the following marks: Si or Peak analog signal current/channel 4.5A 48-Lead LQFP (FG) Storage temperature -65C to 150C Power dissipation 1.0W Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Continuous operation of the device at the absolute rating level may affect device reliability. All voltages are referenced to device ground. Operating Conditions Sym Parameter Value V Logic power supply voltage 3.0V to 5.5V DD V - V Supply voltage differential 240V PP NN V Positive driver supply +15V to +50V PP V Negative high voltage supply -100V to -225V NN V High level input voltage 0.9V to V IH DD DD V Low-level input voltage 0V to 0.1V IL DD V Analog signal voltage peak-to-peak V +10V to V -10V SIG NN PP O O T Operating free air temperature 0 C to 70 C A Notes: 1. Power up/down sequence is arbitrary except GND must be powered-up first and powered-down last. 2. V must be V V V or floating during power up/down transition. SIG NN SIG PP 3. Rise and fall times of power supplies V , V , and V should not be less than 1.0msec. DD PP NN Supertex inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 Tel: 408-222-8888 www.supertex.com 2