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82540EP — Networking Silicon
Table 7.
Power Specifications - Complete Subsystem
2.5V
20
1.5V
10
Subsystem
3.3V current
Table 8.
I/O Characteristics
Symbol
V
IL
V
IH
V
OL
V
OH
V
SH
a
I
OL
a
I
OH
I
IN
I
OZ
C
IN
C
OUT
C
PUD
a. TTL3 signals include: EE_DI, EE_SK, EE_CS, and JTAG_TDO.
TTL6 signals include: CLKRUN#, FL_CE#, FL_SCK, FL_SI, and CLK_VIEW.
TTL12 signals include: LED0 / LINK #, LED1 / ACT #, LED2 / LINK100 #, LED3 / LINK1000 #, SDP0, SDP1, SDP6, and SDP7.
20
20
40
40
10
30
35
70 mA
135 mA
Parameter
Voltage input LOW
Voltage input HIGH
Voltage output LOW
Voltage output HIGH
Schmitt Trigger Hysterysis
Output current LOW
3mA drivers (TTL3)
6mA drivers (TTL6)
12mA drivers (TTL12)
Output current HIGH
3mA drivers (TTL3)
6mA drivers (TTL6)
12mA drivers (TTL12)
Input Current
TTL inputs
Inputs with pull-down resistors
TTL inputs with pull-up resistors
3-state output leakage current
Input capacitance
Output capacitance
Pull-up/down Resistor value
80
80
240
55
60
400
200 mA
Condition
Min
-0.5
2
2.4
0.1
V
3
OL
V
6
OL
V
12
OL
V
-3
OH
V
-6
OH
V
-12
OH
V
= V
or
IN
DD
V
-10
SS
V
= V
150
IN
DD
V
= V
-150
IN
SS
V
= V
or
OH
DD
-10
V
SS
Any input and
bi-directional
buffer
Any output
buffer
7.5
245
0.1
0.1
425
1
1
800 mA
10 mA
Typ
Max
Unit
0.8
V
V
DD
V
+0.3
0.4
V
V
V
mA
mA
mA
mA
mA
mA
10
A
1
480
A
-480
A
1
10
A
2.5
pF
2
pF
20
k
Datasheet
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