AM79C98 Datasheet, PDF (15/22 Pages) Advanced Micro Devices – Twisted-Pair Ethernet Transceiver (TPEX)

DC CHARACTERISTICS (continued)
Parameter
Symbol
Parameter Description
Twisted Pair Interface
IIRXD
RRXD
Input Current at RXD+/–
RXD+/– Differential Input
Resistance
VTIVB
RXD+, RXD– Open Circuit Input
Voltage (Bias)
VTIDV
Differential Mode Input
Voltage Range (RXD+/–)
VTSQ+
RXD Positive
Squelch Threshold (Peak)
VTSQ–
RXD Negative
Squelch Threshold (Peak)
VTHS+
RXD Post-Squelch Positive
Threshold (Peak)
VTHS–
RXD Post-Squelch Negative
Threshold (Peak)
VRXDTH
VTXH
RXD Switching Threshold
TXD+/– and TXP+/–
Output HIGH Voltage
VTXL
TXD+/– and TXP+/–
Output LOW Voltage
VTXI
TXD+/– and TXP+/–
Differential Output
Voltage Imbalance
VTXOFF
TXD+/– and TXP+/–
Differential Idle Output Voltage
RTX
TXD+/– and TXP+/–
Differential Driver
Output Impedance
IIREXT
Input Current at REXT Pin
Power Supply Current
IDD
Power Supply Current
(Transmitting 10 MHz Data)
(Typical TP load)
Power Supply Current
(Transmitting 10 MHz Data)
(No TP load)
IDDPRDN
Power Supply Current
in Power Down Mode
Test Conditions
AVSS < VIN < AVDD
(Note 1)
IIN = 0 mA
AVDD = +5 V
Sinusoid 5 MHz < f< 10 MHz
Sinusoid 5 MHz < f< 10 MHz
Sinusoid 5 MHz < f< 10 MHz
Sinusoid 5 MHz < f< 10 MHz
(Note 1)
(Note 2)
DVSS = 0 V
(Note 2)
DVDD = +5 V
DVDD = +5 V
(Note 1)
REXT = 24.3K Ω ± 1%
AVDD = +5 V
PRDN/RST = HIGH
PRDN/RST = HIGH
PRDN/RST = LOW
AMD
Min
Max
Unit
–500
10
500
µA
KΩ
AVDD - 3.0 AVDD - 1.5
V
–3.1
3.1
V
300
520
mV
–520
–300
mV
150
293
mV
–293
–150
mV
–60
60
mV
DVDD - 0.6
DVDD
V
DVSS
DVSS + 0.6 V
–40
+40
mV
–40
+40
mV
40
Ω
120
µA
115
mA
90
mA
4
mA
Am79C98
15