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Datasheet

Electrical Specifications

Table 2-11. GTL+ Asynchronous Signal Group DC Specifications

Symbol

Parameter

Min

Max

Unit

Notes1

NOTES:

Unless otherwise noted, all specifications in this table apply to all processor frequencies.

VIL

Input Low Voltage

0.0

VTT/2 – (0.10 * VTT)V

2, 3

VIL is defined as the voltage range at a receiving agent that will be interpreted as a logical low value.

LINT0/INTR and LINT1/NMI use GTLREF as a reference voltage. For these two signals VIH = GTLREF + (0.10 * VTT) and

VIL= GTLREF – (0.10 * VTT).

VIH

Input High Voltage

VTT/2 + (0.10 * VTT)VTT

3, 4, 5, 6

VIH is defined as the voltage range at a receiving agent that will be interpreted as a logical high value.

VIH and VOH may experience excursions above VTT. However, input signal drivers must comply with the signal quality spec-

ifications.

The VTT referred to in these specifications refers to instantaneous VTT.

VOH

Output High Voltage

0.90*VTT

VTT

5, 6, 7

All outputs are open drain.

IOL

Output Low Current

—

VTT/[(0.50*RTT_MIN) +

RON_MIN]

The maximum output current is based on maximum current handling capability of the buffer and is not specified into the test

load.

ILI

Input Leakage Current

N/A

± 200

µA

Leakage to VSS with land held at VTT.

ILO

Output Leakage Current

N/A

± 200

µA

10.

Leakage to VTT with land held at 300 mV.

RON

Buffer On Resistance

Ω

Table 2-12. GTL+ Signal Group DC Specifications

Symbol

Parameter

Min

Max

Unit

Notes1

NOTES:

Unless otherwise noted, all specifications in this table apply to all processor frequencies.

VIL

Input Low Voltage

0.0

GTLREF – (0.10 * VTT)V

2, 3

VIL is defined as the voltage range at a receiving agent that will be interpreted as a logical low value.

The VTT referred to in these specifications is the instantaneous VTT.

VIH

Input High Voltage

GTLREF + (0.10 * VTT)VTT

3, 4

VIH is defined as the voltage range at a receiving agent that will be interpreted as a logical high value.

VOH

Output High Voltage

0.90*VTT

VTT

IOL

Output Low Current

N/A

VTT/[(0.50*RTT_MIN) +

RON_MIN]

A-

ILI

Input Leakage Current

N/A

± 200

µA

Leakage to VSS with land held at VTT.

ILO

Output Leakage Current

N/A

± 200

µA

RON

Buffer On Resistance

Ω

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