参数资料
型号: WJLXT908LC.A4
厂商: INTEL CORP
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封装: ROHS COMPLIANT, LQFP-64
文件页数: 21/46页
文件大小: 618K
代理商: WJLXT908LC.A4
Intel
LXT908 Universal 3.3 V 10BASE-T and AUI Transceiver
28
Datasheet
Document #: 249049
Revision #: 003
Rev. Date: 29-Oct-2005
Output fall time
TCLK & RCLK
CMOS
3
12
ns
CLOAD= 20 pF
TTL
2
8
ns
CLKI rise time (externally driven)
10
ns
CLKI duty cycle (externally driven)
40/60
%
Supply current
Normal Mode
ICC
65
85
mA
Idle Mode
ICC
–95
120
mA
Transmitting on
TP
ICC
–90
120
mA
Transmitting on
AUI
Power Down
Mode
ICC
–0.75
2
mA
Table 7.
AUI Electrical Characteristics
Parameter
Symbol
Min
Typ
1
Max
Units
Test Conditions
Input Low current
IIL
––
-700
A–
Input High current
IIH
––
500
A–
Differential output voltage
VOD
±550
±1200
mV
Differential squelch threshold
VDS
150
260
350
mV
5 MHz square
wave input
1. Typical values are at 25°C and are for design aid only, are not guaranteed, and are not subject to
production testing.
Table 8.
Twisted-Pair Electrical Characteristics
Parameter
Symbol
Min
Typ
1
Max
Units
Test Conditions
Transmit output impedance
ZOUT
–5
Ω
Transmit timing jitter addition
2
––
±6.4
±10
ns
0 line length for
internal MAU
Transmit timing jitter added by the
MAU and PLS sections
2, 3
±3.5
±5.5
ns
After line model
specified by IEEE
802.3 for 10BASE-T
internal MAU
1. Typical values are at 25°C and are for design aid only, are not guaranteed, and are not subject to
production testing.
2. Parameter is guaranteed by design; not subject to production testing.
3. IEEE 802.3 specifies maximum jitter additions at 1.5 ns for the AUI cable, 0.5 ns from the encoder, and 3.5
ns from the MAU.
Table 6.
I/O Electrical Characteristics (Continued)
Parameter
Sym
Min
Typ
1
Max
Units
Test Conditions
1. Typical values are at 25°C and are for design aid only, are not guaranteed, and are not subject to
production testing.
2. Limited functional tests are performed at these input levels. The majority of functional tests are performed
at levels of 0V and 3V.
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