The HV76 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 color AC plasma displays.
The device has 4 parallel 8-bit shift registers permitting data rate
4 times the speed of one. The data are clocked in simultaneously
on all four data inputs with a single clock. Data are 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 V
DD1
, and counterclockwise (CCW) shifting when
connected to GND. 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.
鉂?/div>
5V CMOS logic and 12V supply rail
鉂?/div>
Output voltage up to 200V
鉂?/div>
Low power level shifting
鉂?/div>
Source/sink current minimum 50mA
鉂?/div>
40MHz equivalent data rate
鉂?/div>
Chip select
鉂?/div>
Polarity function
鉂?/div>
Forward and reverse shifting options (DIR pin)
鉂?/div>
Latched outputs
Absolute Maximum Ratings
Supply voltage
1
, V
DD1
Supply voltage
1
, V
DD2
Supply voltage
1
, V
PP
Logic input levels
1
Continuous total power dissipation
2
Operating temperature range
Storage temperature range
Notes:
1. All voltages are referenced to GND.
2. For operation above 25擄C ambient derate linearly to maximum operating
temperature at 20mW/擄C for plastic and at 19mW/擄C for ceramic.
02/96/022
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
SUPERTEX
1
2
3
4
5
