參數(shù)資料
型號： LXT914PC
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)： 38/42頁
文件大?。?/td> 561K
代理商： LXT914PC
LXT914
—
Flexible Quad Ethernet Repeater
38
Datasheet
Table 25. IRB Electrical Characteristics
(over recommended range)
Parameter
Symbol
Min
Typ
Max
Units
Test Conditions
Output Low voltage
V
OL
–
.3
.6
V
Output rise or fall time
T
F
–
4
12
ns
Input Low voltage: IRENA,
IRCOL & IRDAT
V
ILIRB
–
–
0.8
V
R
L
= 330
Input High voltage: IRENA,
IRCOL & IRDAT
V
IHIRB
3.0
–
–
V
R
L
= 330
Input Low voltage: BCLKIO
V
ILBCLK
–
–
0.4
V
R
L
= 330
Input High voltage: BCLKIO
V
IHBCLK
4.0
–
–
V
R
L
= 330
Typical values are at 25
°
C and are for design aid only; they are not guaranteed and not subject to
production testing.
Table 26. Switching Characteristics
(over recommended range)
Parameter
Min
Typ
Max
Units
Jabber Timing
Maximum transmit time
5.0
–
5.5
ms
Unjab time
–
9.6
–
μ
s
Link Integrity Timing
Time link loss
–
60
–
ms
Time between Link Integrity Pulses
10
–
20
ms
Interval for valid receive Link Integrity Pulses
4.1
–
30
ms
Typical values are at 25
°
C and are for design aid only; they are not guaranteed and not subject to
production testing.
Table 27. Serial Port Timing
—
External Mode
(over recommended range)
Parameter
Symbol
Minimum
Typical
Maximum
Units
SCLKIO High to SENI Low (active)
tS1
0
–
50
ns
SCLKIO High to SDIN data valid
tS2
0
–
50
ns
SCLKIO High to SENO Low (active)
tS3
5
–
15
ns
SCLKIO Low to SDOUT data valid
tS4
5
–
15
ns
Typical values are at 25
°
C and are for design aid only; they are not guaranteed and not subject to
production testing.
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