ICS1893 Rev B 9/10/99

September, 1999

122

Chapter 10

DC and AC Operating Conditions

ICS1893 Data Sheet - Release

Copyright © 1999, Integrated Circuit Systems, Inc.

All rights reserved.

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

–

8

11

mA

IDD

–

110

125

mA

Supply Current†

10Base-T‡

IDD_IO

–

5

8

mA

IDD

–

150

160

mA

Supply Current†

Auto-Negotiation

IDD_IO

–

5

8

mA

IDD

–

80

90

mA

Supply Current†

Power-Down

IDD_IO

–

3

5

mA

IDD

–

40

50

mA

Supply Current†

Reset

IDD

–

50

60

mA

Table 10-5.

3.3-V DC Operating Characteristics for TTL Inputs and Outputs

Parameter

Symbol

Conditions

Min.

Max.

Units

TTL Input High Voltage

VDD_IO = 3.47 V

–

2.0

–

V

TTL Input Low Voltage

VDD_IO = 3.47 V

–

–

0.8

V

TTL Output High Voltage

VDD_IO = 3.14 V

2.4

–

V

TTL Output Low Voltage

VDD_IO = 3.14 V

–

0.4

V

TTL Driving CMOS,

Output High Voltage

VDD_IO = 3.14 V

2.4

–

V

TTL Driving CMOS,

Output Low Voltage

VDD_IO = 3.14 V

–

0.4

V