SWITCHING CHARACTERISTICS: BUS INTERFACE (CONTINUED)
10BASE-T Mode
Symbol
Parameter Description
Test Conditions
Minimum
Maximum
Unit
VOUT
Output Voltage on TX± (peak)
1.55
1.98
V
Input Differential Squelch
Assert on RX± (peak)
VDIFF
300
520
mV
Input Differential De-Assert
Voltage on RX± (peak)
VDIFF
IIX
150
300
300
mV
Input Leakage Current
-300
µa
Note: VOUT reflects output levels prior to 1:√2 transformer stage.
Power Supply Current
Symbol
Parameter Description
Test Conditions
Maximum
Unit
ICC
1Mbps mode on TX± and RX±.
Outputs driving load.
VDD= Maximum
480
480
mA
(1 Mbps)
ICC
10BASE-T mode on TX± and RX±.
Outputs driving load.
VDD= Maximum
mA
(10 Mbps)
224
Am79C978
AMD [ AMD ]
