參數(shù)資料
型號(hào)： MAX4891ETJ+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 2/17頁(yè)
文件大?。?/td> 0K
描述： IC ETHERNET SWITCH OCTAL 32TQFN
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 60
功能： 以太網(wǎng)開(kāi)關(guān)
電路： 8 x 2:1
導(dǎo)通狀態(tài)電阻： 5.5 歐姆
電壓電源： 單電源
電壓 - 電源，單路/雙路(±)： 3 V ~ 3.6 V
電流 - 電源： 280µA
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 32-WFQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝： 32-TQFN-EP（5x5）
包裝： 管件
MAX4890/MAX4891/MAX4892
Analog Signal Levels
The on-resistance of the MAX4890/MAX4891/MAX4892
is very low and stable as the analog input signals are
swept from ground to V+ (see the
Typical Operating
Characteristics). The switches are bidirectional, allow-
ing A_ and _B_ to be configured as either inputs or out-
puts.
ESD Protection
The MAX4890/MAX4891/MAX4892 are characterized
using the Human Body Model for ±2kV of ESD protec-
tion. Figure 8 shows the Human Body Model, and Figure
9 shows the current waveform the Human Body Model
generates when discharged into a low-impedance load.
This model consists of a 100pF capacitor charged to the
ESD voltage of interest, which is then discharged into the
test device through a 1.5kΩ resistor.
Applications Information
Typical Operating Circuit
The
Typical Operating Circuit depicts the MAX4890/
MAX4891/MAX4892 in a 10/100/1000 Base-T docking
station application.
Line-Card Redundancy (Ethernet T3/E3)
Figure 10 shows the MAX4890/MAX4891/MAX4892 in a
line-card redundancy configuration.
Power-Supply Sequencing and
Overvoltage Protection
Caution: Do not exceed the absolute maximum ratings.
Stresses beyond the listed ratings may cause perma-
nent damage to the device.
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V+ before applying
analog signals, especially if the analog signal is not
current limited.
Layout
High-speed switches require proper layout and design
procedures for optimum performance. Keep design-
controlled-impedance printed circuit board traces as
short as possible. Ensure that bypass capacitors are as
close to the device as possible. Use large ground
planes where possible.
10/100/1000 Base-T Ethernet LAN Switch
10
______________________________________________________________________________________
Figure 4. Differential Crosstalk
1
3
MINI CKT
BALUN
6
4
NETWORK
ANALYZER
R4
49.9
Ω
R3
49.9
Ω
1
3
MINI CKT
BALUN
6
4
R4
49.9
Ω
R3
49.9
Ω
50
Ω
TRACE
50:100
NETWORK
ANALYZER
50
Ω
TRACE
5
50:100
CB5
CB4
50
Ω
TRACE
50
Ω
TRACE
A4
7
A5
8
AB1
22
5B1
21
6B1
18
7B1
17
A6
9
A7
10
DIFFERENTIAL CROSSTALK TRANSMIT CKT
DIFFERENTIAL CROSSTALK RECEIVE CKT
MAX4892
36-TQFN
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4891ETJ+ 功能描述:多路器開(kāi)關(guān) IC 10/100/1000 Base-T Ethernet LAN Switch RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開(kāi)關(guān)數(shù)量:4 開(kāi)啟電阻（最大值）:7 Ohms 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
MAX4891ETJ+T 功能描述:多路器開(kāi)關(guān) IC 10/100/1000 Base-T Ethernet LAN Switch RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開(kāi)關(guān)數(shù)量:4 開(kāi)啟電阻（最大值）:7 Ohms 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
MAX4891ETJ-T 功能描述:多路器開(kāi)關(guān) IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開(kāi)關(guān)數(shù)量:4 開(kāi)啟電阻（最大值）:7 Ohms 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
MAX4892EETX 功能描述:多路器開(kāi)關(guān) IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開(kāi)關(guān)數(shù)量:4 開(kāi)啟電阻（最大值）:7 Ohms 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
MAX4892EETX+ 功能描述:多路器開(kāi)關(guān) IC 10/100/1000 Base-T Ethernet LAN Switch RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開(kāi)關(guān)數(shù)量:4 開(kāi)啟電阻（最大值）:7 Ohms 開(kāi)啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16
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