Datasheet

28 Datasheet
Electrical Specifications
6. The V
TT
referred to in these specifications refers to instantaneous V
TT
.
7. All outputs are open drain.
8. The maximum output current is based on maximum current handling capability of the buffer and is not specified into the test
load.
9. Leakage to V
SS
with land held at V
TT
.
10. Leakage to V
TT
with land held at 300 mV.
Table 2-12. GTL+ Signal Group DC Specifications
Symbol Parameter Min Max Unit Notes
1
V
IL
Input Low Voltage 0.0 GTLREF – (0.10 * V
TT
)V
2, 3
V
IH
Input High Voltage GTLREF + (0.10 * V
TT
)V
TT
V
3, 4
V
OH
Output High Voltage 0.90*V
TT
V
TT
V
3
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
I
LO
Output Leakage Current N/A ± 200 µA
-
R
ON
Buffer On Resistance 8 12 Ω -
NOTES:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
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
.
4. V
IH
is defined as the voltage range at a receiving agent that will be interpreted as a logical high value.
5. Leakage to V
SS
with land held at V
TT
.
Table 2-13. PWRGOOD and TAP Signal Group DC Specifications
Symbol Parameter Min Max Unit Notes
1, 2
V
HYS
Input Hysteresis 200 350 mV
3
V
T+
Input low to high
threshold voltage
0.5 * (V
TT
+ V
HYS_MIN)
0.5 * (V
TT
+ V
HYS_MAX
)V
4
V
T-
Input high to low
threshold voltage
0.5 * (V
TT
– V
HYS_MAX
) 0.5 * (V
TT
– V
HYS_MIN
)V
4
V
OH
Output High Voltage N/A V
TT
V
4
I
OL
Output Low Current — 45 mA
5
I
LI
Input Leakage Current — ± 200 µA
6
I
LO
Output Leakage Current — ± 200 µA
-
R
ON
Buffer On Resistance 7 12 Ω -
NOTES:
1. Unless otherwise noted, all specifications in this table apply to all processor frequencies.
2. All outputs are open drain.
3. V
HYS
represents the amount of hysteresis, nominally centered about 0.5 * V
TT
, for all TAP inputs.
4. The V
TT
referred to in these specifications refers to instantaneous V
TT
.
5. The maximum output current is based on maximum current handling capability of the buffer and is not specified into the test
load.
6. Leakage to V
SS
with land held at V
TT
.
Table 2-14. VTTPWRGD DC Specifications
Symbol Parameter Min Typ Max Unit Notes
V
IL
Input Low Voltage — — 0.3 V
V
IH
Input High Voltage 0.9 — — V