
Page 170
Cortina Systems LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
LXT9785/LXT9785E
Datasheet
249241, Revision 11.0
16 April 2007
6.0 Test Specifications
6.0
Test Specifications
specifications of the LXT9785/LXT9785E. These specifications are not guaranteed and
are subject to change without notice. Minimum and maximum values listed in
Table 54through
Table 82 apply over the recommended operating conditions specified in
Table 53.Table 52
Absolute Maximum Ratings
Parameter
Sym
Min
Max
Units
Supply voltage
VCCIO, VCCPECL
-0.3
4.0
V
VCCA, VCCD
-0.3
3.0
V
Storage temperature
TST
-65
+150
C
Caution:
Exceeding these values may cause permanent damage. Functional
operation under these conditions is not implied. Exposure to maximum
rating conditions for extended periods may affect device reliability.
Table 53
Operating Conditions (Sheet 1 of 2)
Parameter
Sym
Min
Typ1
(2.5 VCCIO)
Typ1
(3.3 VCCIO)
Max
Units
Commercial
Operating
Temperature
Ambient
Topa
0
–
70
C
Case
Topc
0
–
108
C
Extended
Operating
Temperature
Ambient
TOPA
-40
85
C
Case
TOPC
-40
123
C
Supply voltage2
Analog & Digital
Vcca, Vccd
2.38
2.5
2.63
V
I/O
VCCIO
2.38
2.5
3.3
3.46
V
I/O (SD_2P5V = 0)
VCCPECL
3.14
N/A
3.3
3.46
V
I/O (SD_2P5V = 1)
2.38
2.5
N/A
2.63
V
Operating
Current - RMII3
100BASE-TX
ICC
–
780
810
mA
ICCIO
–
60
130
160
mA
100BASE-FX
ICC
–
380
410
mA
ICCIO
–
90
170
200
mA
10BASE-T
ICC
–
710
765
mA
ICCIO
–30
70
90
mA
Power-Down
Mode
Hardware
ICC
–20
20
mA
ICCIO
–2
3
4
mA
Auto-Negotiation
ICC
–
500
540
mA
ICCIO
–2
4
mA
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production
testing.
2. Voltages with respect to ground unless otherwise specified.
3. Values are aggregated for all eight ports.