KS8721B/BT Micrel, Inc. Symbol Parameter Condition Min Typ Max Units 10BaseTX Receive R
參數(shù)資料
型號： KSZ8721BI TR
廠商： Micrel Inc
文件頁數(shù)： 16/32頁
文件大?。?/td> 0K
描述： TXRX PHY 10/100 2.3.3/5V 48-SSOP
標準包裝： 1,000
類型： 收發(fā)器
驅(qū)動器/接收器數(shù)： 1/1
規(guī)程： MII，RMII
電源電壓： 2.375 V ~ 2.625 V
安裝類型： 表面貼裝
封裝/外殼： 48-BSSOP（0.295"，7.50mm 寬）
供應(yīng)商設(shè)備封裝： 48-SSOP
包裝： 帶卷 (TR)
配用： 576-1627-ND - BOARD EVALUATION FOR KSZ8721BMC
576-1626-ND - BOARD EVALUATION FOR KSZ8721BL
其它名稱： KSZ8721BITR
KSZ8721BITR-ND
March 2006
23
M9999-030106
KS8721B/BT
Micrel, Inc.
Symbol
Parameter
Condition
Min
Typ
Max
Units
10BaseTX Receive
RIN
RX+/RX– Differential
8
kΩ
Input Resistance
VSQ
Squelch Threshold
5MHz square wave
400
mV
10BaseTX Transmit (measured differentially after 1:1 transformer)
VP
Peak Differential Output Voltage
50Ω from each output to VDD
2.2
2.8
V
Jitters Added
50Ω from each output to VDD
±3.5
ns
tr, tt
Rise/Fall Time
25
ns
Clock Outputs
X1, X2
Crystal Oscillator
25
MHZ
RXC100
Receive Clock, 100TX
25
MHZ
RXC10
Receive Clock, 10T
2.5
MHZ
Receive Clock Jitters
3.0
ns(pk-pk)
TXC100
Transmit Clock, 100TX
25
MHZ
TXC10
Transmit Clock, 10T
2.5
MHZ
Transmit Clock Jitters
1.8
ns(pk-pk)
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Symbol
Parameter
Condition
Min
Typ
Max
Units
Input Resistance
RX+/RX– Differential
8
kΩ
Input Resistance
Squelch Threshold
5MHz square wave
400
mV
RX+/RX– Differential
8
kΩ
Input Resistance
Squelch Threshold
5MHz square wave
400
mV
RX+/RX– Differential
8
kΩ
Squelch Threshold
5MHz square wave
400
mV
RX+/RX– Differential
8
kΩ
Squelch Threshold
5MHz square wave
400
mV
RX+/RX– Differential
8
kΩ
Squelch Threshold
5MHz square wave
400
mV
Peak Differential Output Voltage
50Ω from each output to V
Peak Differential Output Voltage
50Ω from each output to V
Jitters Added
50Ω from each output to V
Rise/Fall Time
25
ns
2.2
2.8
V
±3.5
ns
Rise/Fall Time
25
ns
2.2
2.8
V
±3.5
ns
Rise/Fall Time
25
ns
2.2
2.8
V
±3.5
ns
Rise/Fall Time
25
ns
2.2
2.8
V
±3.5
ns
Rise/Fall Time
25
ns
X1, X2
Crystal Oscillator
25
MHZ
Transmit Clock Jitters
1.8
X1, X2
Crystal Oscillator
25
MHZ
Receive Clock, 100TX
25
MHZ
Receive Clock, 10T
2.5
MHZ
Receive Clock Jitters
3.0
Transmit Clock, 100TX
25
MHZ
Transmit Clock, 10T
2.5
MHZ
Transmit Clock Jitters
1.8
X1, X2
Crystal Oscillator
25
MHZ
Receive Clock, 100TX
25
MHZ
Receive Clock, 10T
2.5
MHZ
Receive Clock Jitters
3.0
Transmit Clock, 100TX
25
MHZ
Transmit Clock, 10T
2.5
MHZ
Transmit Clock Jitters
1.8
X1, X2
Crystal Oscillator
25
MHZ
Receive Clock, 100TX
25
MHZ
Receive Clock, 10T
2.5
MHZ
Receive Clock Jitters
3.0
Transmit Clock, 100TX
25
MHZ
Transmit Clock, 10T
2.5
MHZ
Transmit Clock Jitters
1.8
X1, X2
Crystal Oscillator
25
MHZ
Receive Clock, 100TX
25
MHZ
Receive Clock, 10T
2.5
MHZ
Receive Clock Jitters
3.0
Transmit Clock, 100TX
25
MHZ
Transmit Clock, 10T
2.5
MHZ
Transmit Clock Jitters
1.8
X1, X2
Crystal Oscillator
25
MHZ
Receive Clock, 100TX
25
MHZ
Receive Clock, 10T
2.5
MHZ
Transmit Clock, 100TX
25
MHZ
Transmit Clock, 10T
2.5
MHZ
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