ICS1892
10Base-T/100Base-TX Integrated PHYceiver™
TSD
Chapter 10 DC and AC Operating Conditions
ICS1892 Data Sheet
10.4 DC Operating Characteristics
This section lists the DC operating characteristics for the ICS1892.
10.4.1 DC Operating Characteristics for Supply Current
Table 10-4 lists the DC operating characteristics for the supply current to the ICS1892.
Note: All VDD measurements are taken with respect to VSS (which equals 0 V).
Table 10-4. DC Operating Characteristics for Supply Current
Parameter
Symbol
IDD
Conditions
100Base-TX Mode
10Base-T Mode
Min.
Typ. Max. Units
Supply Current†
Supply Current†
Supply Current†
Supply Current†
Supply Current†
VDD = 5.25 V
VDD = 5.25 V
–
–
–
–
–
162
133
162
18
180
147
180
20
mA
mA
mA
mA
mA
IDD
IDD
Auto-Negotiation Mode VDD = 5.25 V
IDD
Power-Down Mode
Reset
VDD = 5.25 V
VDD = 5.25 V
IDD
39
43
† These supply current parameters are measured through VDD pins to the ICS1892. The supply current
parameters exclude external transformer currents.
10.4.2 DC Operating Characteristics for TTL Inputs and Outputs
Table 10-5 lists the DC operating characteristics of the ICS1892 TTL inputs and outputs.
Note: All VDD measurements are taken with respect to VSS (which equals 0 V).
Table 10-5. DC Operating Characteristics for TTL Inputs and Outputs
Parameter
Symbol
VIH
Conditions
VDD = 5.25 V
Min. Max. Units
TTL Input High Voltage
TTL Input Low Voltage
TTL Output High Voltage
TTL Output Low Voltage
–
2.0
–
–
0.8
–
V
V
V
V
V
VIL
VDD = 5.25 V
VDD = 4.75 V
VDD = 4.75 V
VDD = 4.75 V
–
VOH
VOL
IOH = –4 mA
IOL = +4 mA
IOH = –4 mA
2.4
–
0.4
–
TTL Driving CMOS,
Output High Voltage
VOH
3.68
TTL Driving CMOS,
Output Low Voltage
VOL
VDD = 4.75 V
IOL = +4 mA
–
0.4
V
10.4.3 DC Operating Characteristics for REF_IN
Table 10-6 lists the DC characteristics for the REF_IN pin.
Note: The REF_IN input switch point is 50% of VDD
.
Table 10-6. DC Operating Characteristics for REF_IN
Parameter
Symbol
VIH
Test Conditions
Min. Max. Units
Input High Voltage
Input Low Voltage
VDD = 5.25 V
VDD = 5.25 V
VSS = 0 V
VSS = 0 V
3.5
–
–
V
V
VIL
1.5
ICS1892, Rev. D, 2/26/01
February 26, 2001
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
122
IDT™ / ICS™ 10Base-T/100Base-TX Integrated PHYceiver™
ICS1892
122
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
