HV518 データシートの表示（PDF） - Supertex Inc
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HV518 Datasheet PDF : 8 Pages
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Power-Up/ Power-Down Sequences
Power-up sequence should be the following:
1. Connect ground.
2. Apply VDD.
3. Set all inputs (Data, CLK, Enable, etc.) to a known state.
4. Apply VPP.
5. The VPP should not drop below VDD or float during operation.
Power-down sequence should be the reverse of the above.
Input and Output Equivalent Circuits
VDD
VDD
HV518
VPP
INPUT
DATA
OUT
HVOUT
GND
GND
GND
Parameter Measurement Information
Clock
Data In
50%
t w(CKL)
t su
t w(CKH)
th
V IH
Clock
V IL
V IH
Data
Output
V IL
t w(CKH)
50%
td
50%
V IH
V IL
V OH
V OL
Input Timing Voltage Waveforms
Figure 1
Latch Enable
HV Output
50%
90%
10%
t DLH or t DHL
V IH
Strobe
V IL
t DLH
V OH HV Output
V OL
t TLH
50%
t DHL
t THL
V IH
V IL
90%
V OH
10% V OL
Figure 2
Figure 3: Input Timing Voltage Waveforms
Note: For testing purposes, all input pulses have maximum rise and fall times of 30 nsec.
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