lxt975 Intel Corporation, lxt975 Datasheet - Page 52

• Manufacturer Part Number: lxt975
• Description: Fast Ethernet 10/100 Quad Transceivers
• Manufacturer: Intel Corporation

LXT974/LXT975 — Fast Ethernet 10/100 Quad Transceivers
52
Peak differential output voltage
(single ended)
Signal rise/fall time
Jitter (measured differentially)
Peak differential input voltage
Common mode input range
Peak differential
output voltage
Link transmit period
Transmit timing jitter added by the
MAU and PLS sections
Receive input impedance
Link min receive
Link max receive
Time link loss receive
Differential squelch threshold
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
1. Typical values are at 25 °C and are for design aid only; not guaranteed and not subject to production testing.
2. Parameter is guaranteed by design; not subject to production testing.
3. IEEE 802.3 specifies maximum jitter addition at 1.5 ns for the AUI cable, 0.5 ns from the encoder, and 3.5 ns from the MAU.
Table 29. 100BASE-FX Transceiver Characteristics
Table 30. 10BASE-T Transceiver Characteristics
Parameter
Parameter
2,3
2
Sym
V
V
Z
OP
–
–
–
–
–
DS
V
IN
Sym
V
T
V
CMIR
OP
RF
–
IP
Min
300
2.2
50
50
8
0
–
2
0.55
2.25
Min
0.6
–
–
Transmitter
Typ
Transmitter
390
2.5
3.6
Receiver
Receiver
–
2
–
–
–
Typ
1
–
–
–
–
–
1
Max
150
150
585
2.8
24
11
–
7
V
CC
Max
1.5
1.6
1.3
1.5
- 0.5
mV Peak
Units
k
ms
ms
ms
ms
ns
V
Ω
Units
ns
ns
V
V
V
With specified transformer, line
replaced by 100 Ω (±1%) resistor
After line model specified by IEEE
802.3 for 10BASE-T MAU
Between TPIP and TPIN
5 MHz square wave input
10 <–> 90%
Test Conditions
Test Conditions
–
–
–
–
–
–
–
–
2.0 pF load
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