SMSC USB2504A Manual De Usuario
Integrated USB 2.0 Compatible 4-Port Hub
Datasheet
Revision 2.3 (08-27-07)
42
SMSC USB2504/USB2504A
DATASHEET
8.2
Recommended Operating Conditions
PARAMETER
SYMBOL
MIN
MAX
UNITS
COMMENTS
Operating
Temperature
T
A
0
70
°C
1.8V supply voltage
V
DDA18PLL
V
DD18
1.71
1.98
V
3.3V supply voltage
V
DDA33
V
DDA33PLL
V
DD33
3.0
3.6
V
Voltage on any I/O pin
-0.3
5.5
V
If any 3.3V supply voltage drops
b e l o w 3 . 0 V, t h e n t h e M A X
becomes:
b e l o w 3 . 0 V, t h e n t h e M A X
becomes:
(3.3V supply voltage + 0.5)
Voltage on XTAL1
-0.3
V
DDA33
V
Voltage on XTAL2
-0.3
V
DD18
V
Table 8.1 DC Electrical Characteristics
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
COMMENTS
I, IS Type Input Buffer
Low Input Level
High Input Level
Input Leakage
Hysteresis (‘IS’ Only)
V
ILI
V
IHI
I
IL
V
HYSI
2.0
-10
250
300
0.8
+10
350
V
V
uA
mV
TTL Levels
V
IN
= 0 to V
DD33
Input Buffer with Pull-Up
(IPU)
(IPU)
Low Input Level
High Input Level
Low Input Leakage
High Input Leakage
V
ILI
V
IHI
I
ILL
I
IHL
2.0
+26
-10
0.8
+72
+10
V
V
uA
uA
TTL Levels
V
IN
= 0
V
IN
= V
DD33
Input Buffer with Pull-Down
IPD
IPD
Low Input Level
High Input Level
Low Input Leakage
High Input Leakage
V
ILI
V
IHI
I
ILL
I
IHL
2.0
+10
-22
0.8
-10
-82
V
V
uA
uA
TTL Levels
V
IN
= 0
V
IN
= V
DD33