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HV574 Datasheet(PDF) 1 Page - Supertex, Inc |
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HV574 Datasheet(HTML) 1 Page - Supertex, Inc |
1 / 7 page ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com HV574 Features HVCMOS® technology 5.0V CMS Logic Output voltage up to 80V Low power level shifting 100MHz equivalent data rate using four dynamic shift registers Latched data outputs Foreward and reverse shifting options (DIR pin) Diode to VPP allows efficient power recovery Outputs may be hot switched Hi-Rel processing available ► ► ► ► ► ► ► ► ► ► Functional Block Diagram 100MHz, 80-Channel Serial to Parallel Converter with Push-Pull Outputs General Description The HV574 is a low-voltage serial to high-voltage parallel con- verter with push-pull outputs. This device has been designed for use as a driver for printer applications. It can also be used in any application requiring multiple output high-voltage current sour- cing and sinking capability such as driving plasma panels, vac- uum fluorescent displays, or large matrix LCD displays. The device has 4 parallel 20-bit dynamic shift registers, permitting data rates 4X the speed of one (they are clocked together). There are 80 static latches and control logic to perform the polarity select and blanking of the outputs. HV OUT1 is connected to the first stage of the first shift register through the polarity and blanking logic. Data is shifted through the shift registers on the logic low to high transition of the clock. The DIR pin causes CCW shifting when connected to GND, and CW shifting when connected to VDD. A data output buffer is provided for cascading devices. This output reflects the current status of the last bit of the shift register (HV OUT80). Operation of the shift register is not affected by the LE (latch enable), BL (blanking), or the POL (polarity) inputs. Transfer of data from the shift registers to the latches occurs when the LE (latch enable) input is high. The data in the latches is stored when LE is low. HV OUT 21 HV OUT 40 HV OUT 1 HV OUT 20 POL VPP BL LE DINA DOUT A DINB DOUT B DIR CLK 20-bit shift register 20-bit shift register GND VDD HV OUT 61 HV OUT 80 HV OUT 41 HV OUT 60 DINC DOUT C DIND DOUT D 20-bit shift register 20-bit shift register |
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