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Si53xx-RM
116 Rev. 0.5
8.6. Three-Level (3L) Input Pins (With External Resistors)
Figure 56. Three Level Input Pins
Any resistor pack may be used.
The Panasonic EXB-D10C183J is an example.
PCB layout is not critical.
Resistor packs are only needed if the leakage current of the external driver exceeds the listed currents.
If a pin is tied to ground or Vdd, no resistors are needed.
If a pin is left open (no connect), no resistors are needed.
Parameter Symbol Min Max
Input Low Current Iill –30 µA —
Input Mid Current Iimm –11 µA –11 µA
Input High Current Iihh — –30 µA
Note: The above currents are the amount of leakage that the 3L inputs can tolerate from an external
driver.
External Driver
Si53xx
I
imm
18 k
V
DD
18 k
75 k
V
DD
75 k
One of eight resistors from a Panasonic EXB-D10C183J
(or similar) resistor pack