Digi NS9750 - Manual (Page 814)

D C e l e c t r i c a l c h a r a c t e r i s t i c s
7 9 0 N S 9 7 5 0 H a r d w a r e R e f e r e n c e
DC electrical characteristics
DC characteristics specify the worst-case DC electrical performance of the I/O
buffers that are guaranteed over the specified temperature range.
Inputs
All electrical inputs are 3.3V interface.
Note:
V
SS
= 0V (GND)
USB DC electrical inputs
Sym Parameter Condition Value Unit
V
IH
High-level input voltage:
LVTTL level
PCI level
Min
2.0
0.5V
DDA
V
V
V
IL
Low-level input voltage:
LVTTL level
PCI level
Max
0.8
0.3V
DDA
V
V
I
IH
High level input current (no
pulldown)
Input buffer with pulldown
V
INA
=V
DDA
Min/Max
Min/Max
-10/10
10/200
μA
μA
I
IL
Low-level input current (no
pullup
Input buffer with pullup
V
INA
=V
SS
Min/Max
Min/Max
-10/10
10/200
μA
μA
I
OZ
High-impedance leakage
current V
OUTA
=V
DDA
or V
SS
Min/Max -10/10
μA
I
DDS
Quiescent supply current V
INA
=V
DDA
or V
SS
Max TBD
Table 463: DC electrical inputs
Symbol Parameter Min Max Units Notes
V
IH
Input high level (driven) 2.0 V
DDA
-0.6 V
V
IZ
Input high level (floating) 2.7 3.6 V
Table 464: USB DC electrical inputs