3X38FTR Datasheet, PDF (56/64 Pages) Agere Systems – OCTAL-FET (Fast Ethernet Transceiver) for 10Base-T/100Base-TX/FX

3X38FTR 208-Pin SQFP
OCTAL-FET for 10Base-T/100Base-TX/FX
Preliminary Data Sheet
September 2000
Absolute Maximum Ratings (TA = 25 °C)
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Table 36. Absolute Maximum Ratings
Parameter
Ambient Operating Temperature
Storage Temperature
Power Dissipation
Voltage on Any Pin with Respect to Ground
Maximum Supply Voltage
Symbol
TA
Tstg
PD
—
—
Min
Max
Unit
0
70
°C
–40
125
°C
—
3.5
W
–0.5
VDD + 0.3
V
—
3.8
V
Table 37. Operating Conditions
Parameter
Operating Supply Voltage
Power Dissipation:
Powerdown
All Ports Autonegotiating^†
All Ports 10Base-T Link TX/RX 0%
10Base-T TX/RX 100%
100Base-T TX
Symbol
Min
Typ*
Max
Unit
—
3.135
3.3
3.465
V
—
—
0.2
—
W
PD
—
0.4
—
W
PD
—
0.25
—
W
PD
—
2.7
—
W
PD
—
3.2
—
W
* Typical power dissipations are specified at 3.3 V and 25 °C. This is the power dissipated by the 3X38.
† During autonegotiation, we use a patent-pending technique of turning off a majority of the circuitry, and only powerup the necessary link
detect circuitry. Thus, our autonegotiation power is very low.
Table 38. dc Characteristics
Parameter
Symbol
TTL Input High Voltage
TTL Input Low Voltage
TTL Output High Voltage
TTL Output Low Voltage
LED Output Current
RMII Output Current
PECL Input High Voltage
PECL Input Low Voltage
PECL Output High Voltage
PECL Output Low Voltage
Oscillator Input
Input Capacitance
VIH
VIL
VOH
VOL
ILED
IMII
VIH
VIL
VOH
VOL
XIN
MII CIN
Conditions
VDD = 3.3 V, VSS = 0.0 V
VDD = 3.3 V, VSS = 0.0 V
VDD = 3.3 V, VSS = 0.0 V
VDD = 3.3 V, VSS = 0.0 V
—
—
—
—
—
—
—
—
Min
Max
2.0
—
—
0.8
2.4
—
—
0.4
—
10
—
10
VDD – 1.16 VDD – 0.88
VDD – 1.81 VDD – 1.47
VDD – 0.8
—
—
VDD – 1.60
–50
50
—
8
Unit
V
V
V
V
mA
mA
V
V
V
V
ppm
pF
56
Lucent Technologies Inc.