HV7620_13 Datasheet, PDF (1/7 Pages) Supertex, Inc – 40MHz, 32-Channel Serial to Parallel Converter with Push-Pull Outputs

Supertex inc.
HV7620
40MHz, 32-Channel Serial to Parallel Converter
with Push-Pull Outputs
Features
►► HVCMOS^® technology
►► 5.0V logic and 12V supply rail
►► Output voltage up to +200V
►► Low power level shifting
►► Source/sink current minimum 50mA
►► 40MHz equivalent data rate
►► Latched data outputs
►► Forward and reverse shifting options (DIR pin)
►► Chip select
►► Polarity function
General Description
The HV7620 is a low-voltage serial to high-voltage parallel
converter with push-pull outputs. This device has been designed
for use as a driver for color AC plasma displays.
The device has 4 parallel 8-bit shift registers permitting data rates
four times the speed of one. The data is clocked in simultaneously
on all four data inputs with a single clock. Data is shifted in on a
low to high transition of the clock. The latches and control logic
perform the output enable function.
The DIR pin causes clockwise (CW) shifting of the data when
connected to VDD1, and counterclockwise (CCW) shifting when
connected to LVGND. Operation of the shift register is not affected
by the LE (latch enable) input. Transfer of data from the shift
registers to the latches occurs when the LE input is high. Data is
stored in the latches when LE is low. The current source on the
logic inputs provides active pull up when the input pins are open.
Functional Block Diagram
D_INA
D_OUTA
CLK
D_INB
D_OUTB
DIR
D_INC
D_OUTC
D_IND
D_OUTD
LE BLA CS
8-Bit
Shift
Register ₈
QA1
8-Bit
Latches
QA8
≈≈
BLB
8-Bit
Shift
Register ₈
QB1
8-Bit
Latches
QB8
≈≈
BLC
8-Bit
Shift
Register ₈
QC1
8-Bit
Latches
QC8
≈≈
BLD
QD1
8-Bit
Shift
Register
8
8-Bit
Latches
QD8
≈≈
POL
≈
≈
≈
HV_OUTA1
HV_OUTB1
HV_OUTC1
HV_OUTD1
HV_OUTA8
HV_OUTB8
HV_OUTC8
HV_OUTD8
Doc.# DSFP-HV7620
C112213
Supertex inc.
www.supertex.com