參數(shù)資料
型號: LXT980AHC
英文描述: LAN HUB CONTROLLER
中文描述: 局域網(wǎng)集線器控制器
文件頁數(shù): 62/96頁
文件大?。?/td> 1309K
代理商: LXT980AHC
LXT980/980A Dual-Speed, 5-Port Fast Ethernet Repeater
62
Datasheet
Receiver
Peak differential input voltage
V
IP
0.55
1.5
V
Common mode input range
V
CMIR
2.25
V
CC
- 0.5
V
Table 32. 10BASE-T Transceiver Electrical Characteristics
Parameter
Symbol
Min
Typ
1
Max
Units
Test Conditions
Transmitter
Peak differential output voltage
V
P
2.2
2.5
2.8
V
Measured at line side of
transformer, line replaced by 100
(± .1%) resistor
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
±3.5
±5.5
ns
After line model specified by IEEE
802.3 for 10BASE-T internal MAU
Receiver
Receive input impedance
Z
IN
3.4
k
Between TPIP/TPIN
Differential Squelch Threshold
V
DS
300
420
585
mV
5 MHz square wave input,
750 mVpp
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. IEEE802.3 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 31. 100BASE-FX Transceiver Electrical Characteristics (Continued)
Parameter
Symbol
Min
Typ
1
Max
Units
Test Conditions
1. Typical values are at 25
°
C and are for design aid only; not guaranteed and not subject to production testing.
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