Datasheet
31
Electrical Specifications
Table 2-11. GTL+ Asynchronous Signal Group DC Specifications
Symbol
Parameter
Min
Max
Unit
Notes
1
NOTES:
1.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
V
IL
Input Low Voltage
0.0
V
TT
/2 – (0.10 * V
TT
)
V
2, 3
2.
V
IL
is defined as the voltage range at a receiving agent that will be interpreted as a logical low value.
3.
LINT0/INTR and LINT1/NMI use GTLREF as a reference voltage. For these two signals V
IH
= (0.10 * V
TT
) and
V
IL
= GTLREF – (0.10 * V
TT
).
V
IH
Input High Voltage
V
TT
/2 + (0.10 * V
TT
)
V
TT
V
3, 4, 5, 6
4.
V
IH
is defined as the voltage range at a receiving agent that will be interpreted as a logical high value.
5.
V
IH
and V
OH
may experience excursions above V
TT
. However, input signal drivers must comply with the signal quality spec-
ifications.
6.
The V
TT
referred to in these specifications refers to instantaneous V
TT
.
V
OH
Output High Voltage
0.90*V
TT
V
TT
V
7
7.
All outputs are open drain.
I
OL
Output Low Current
—
V
TT
/[(0.50*R
TT_MIN
) +
R
ON_MIN
]
A
8
8.
The maximum output current is based on maximum current handling capability of the buffer and is not specified into the test
load.
I
LI
Input Leakage Current
N/A
± 200
µA
9
9.
Leakage to V
SS
with land held at V
TT
.
I
LO
Output Leakage Current
N/A
± 200
µA
10
10.
Leakage to V
TT
with land held at 300 mV.
R
ON
Buffer On Resistance
8
12
Ω
-
Table 2-12. GTL+ Signal Group DC Specifications
Symbol
Parameter
Min
Max
Unit
Notes
1
NOTES:
1.
Unless otherwise noted, all specifications in this table apply to all processor frequencies.
V
IL
Input Low Voltage
0.0
GTLREF – (0.10 * V
TT
)
V
2, 3
2.
V
IL
is defined as the voltage range at a receiving agent that will be interpreted as a logical low value.
3.
The V
TT
referred to in these specifications is the instantaneous V
TT
.
V
IH
Input High Voltage
(0.10 * V
TT
)
V
TT
V
4.
V
IH
is defined as the voltage range at a receiving agent that will be interpreted as a logical high value.
V
OH
Output High Voltage
0.90*V
TT
V
TT
V
I
OL
Output Low Current
N/A
V
TT
/[(0.50*R
TT_MIN
) +
R
ON_MIN
]
A
-
I
LI
Input Leakage Current
N/A
± 200
µA
5
5.
Leakage to V
SS
with land held at V
TT
.
I
LO
Output Leakage Current
N/A
± 200
µA
-
R
ON
Buffer On Resistance
8
12
Ω
-
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