ICS1893 datasheet(125/152 Pages) ICST

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Chapter 10

DC and AC Operating Conditions

ICS1893 Rev C 6/6/00

June, 2000

125

ICS1893 - Release

10.4

DC Operating Characteristics

This section lists the ICS1893 DC operating characteristics.

10.4.1

DC Operating Characteristics for Supply Current

Table 10-4 lists the DC operating characteristics for the supply current to the ICS1893 under various

conditions.

Note:

All VDD_IO measurements are taken with respect to VSS (which equals 0 V).

† These supply current parameters are measured through VDD pins to the ICS1893. The supply current

parameters include external transformer currents.

‡ Measurements taken with 100% data transmission and the minimum inter-packet gap.

10.4.2

DC Operating Characteristics for TTL Inputs and Outputs

Table 10-5 lists the 3.3-V DC operating characteristics of the ICS1893 TTL inputs and outputs.

Note:

All VDD_IO measurements are taken with respect to VSS (which equals 0 V).

Table 10-4.

DC Operating Characteristics for Supply Current

Parameter

Operating Mode

Symbol

Min.

Typ.

Max.

Units

Supply Current†

100Base-TX‡

IDD_IO

–

IDD

–

110

125

Supply Current†

10Base-T‡

IDD_IO

–

IDD

–

150

160

Supply Current†

Auto-Negotiation

IDD_IO

–

IDD

–

Supply Current†

Power-Down

IDD_IO

–

IDD

–

Supply Current†

Reset

IDD

–

Table 10-5.

3.3-V DC Operating Characteristics for TTL Inputs and Outputs

Parameter

Symbol

Conditions

Min.

Max.

Units

TTL Input High Voltage

VIH

VDD_IO = 3.47 V

–

2.0

–

TTL Input Low Voltage

VIL

VDD_IO = 3.47 V

–

0.8

TTL Output High Voltage

VOH

VDD_IO = 3.14 V

IOH = –4 mA

2.4

–

TTL Output Low Voltage

VOL

VDD_IO = 3.14 V

IOL = +4 mA

–

0.4

TTL Driving CMOS,

Output High Voltage

VOH

VDD_IO = 3.14 V

IOH = –4 mA

2.4

–

TTL Driving CMOS,

Output Low Voltage

VOL

VDD_IO = 3.14 V

IOL = +4 mA

–

0.4

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