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參數(shù)資料
| 型號： | MAX4927ETN+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 12/13頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ETHERNET SWITCH QUAD 56TQFN |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 27 |
| 功能： | 以太網(wǎng)開關(guān) |
| 電路： | 4 x 2:2 |
| 導通狀態(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 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 56-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 56-TQFN-EP（5x11） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1421 (CN2011-ZH PDF) |
MAX4927
1000 Base-T, ±15kV ESD Protection LAN Switch
8
_______________________________________________________________________________________
Human Body Model
Figure 5a shows the Human Body Model. Figure 5b
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of a
100pF capacitor charged to the ESD voltage of interest,
which is then discharged into the test device through
1.5k
Ω resistor.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. However, it does
not specifically refer to integrated circuits. The MAX4927
helps equipment design to meet IEC 61000-4-2 without
the need for additional ESD-protected components.
The major difference between tests done using the
Human Body Model and IEC 61000-4-2 is higher peak
current in IEC 61000-4-2 because series resistance is
lower in the IEC 61000-4-2 model. Hence, the ESD with-
stand voltage measured to IEC 61000-4-2 is generally
lower than that measured using the Human Body
Model. Figure 5c shows the IEC 61000-4-2 model, and
Figure 5d shows the current waveform for IEC 61000-4-
2 ESD Contact Discharge test.
Machine Model
The machine model for ESD tests all pins using a 200pF
storage capacitor and zero discharge resistance.
The objective is to emulate the stress caused when I/O
pins are contacted by handling equipment during test
and assembly.
The Air-Gap Discharge Method involves approaching the
device with a charged probe. The Contact Discharge
Method connects the probe to the device before the
probe is energized.
Applications Information
Typical Operating Circuit
The Typical Operating Circuit shows the MAX4927 in a
1000 Base-T docking station application.
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 VDD before applying
analog signals, especially if the analog signal is not
current limited.
Power-Supply Bypassing
Bypass at least one VDD input to ground with a 0.1F or
larger ceramic capacitor as close to the device as pos-
sible. Use the smallest physical size possible for optimal
performance (0603 body size is recommended).
It is also recommended to bypass more than one VDD
input. A good strategy is to bypass one VDD input with
a 0.1F capacitor, and at least a second VDD input with
a 10nF capacitor (use 0603 or smaller physical size
ceramic capacitor).
Layout
High-speed switches require proper layout and design
procedures for optimum performance. Keep design-con-
trolled-impedance PCB traces as short as possible.
Ensure that bypass capacitors are as close as possible
to the device. Use large ground planes where possible.
Chip Information
PROCESS: BiCMOS
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4927ETN+ | 功能描述:多路器開關(guān) IC 1000 Base-T LAN Switch RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間: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 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MAX4927ETN+T | 功能描述:多路器開關(guān) IC 1000 Base-T LAN Switch RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間: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 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MAX4928AETN+ | 功能描述:多路器開關(guān) IC DisplayPort/PCIe Passive Switch RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間: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 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MAX4928AETN+T | 功能描述:多路器開關(guān) IC DisplayPort/PCIe Passive Switch RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間: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 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MAX4928BETN+ | 功能描述:多路器開關(guān) IC DisplayPort/PCIe Passive Switch RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間: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 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
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