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參數(shù)資料
| 型號(hào)： | MAX14978ETO+T |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 5/15頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC ANLG PASSIVE SW USB 42-TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 功能： | USB 開關(guān) |
| 導(dǎo)通狀態(tài)電阻： | 10 歐姆 |
| 電壓電源： | 單電源 |
| 電壓 - 電源，單路/雙路(±)： | 3 V ~ 5.5 V |
| 電流 - 電源： | 600nA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 42-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 42-TQFN-EP（3.5x9） |
| 包裝： | 帶卷 (TR) |
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MAX14978
SuperSpeed USB Passive Switch
(Low/Full/Hi/SuperSpeed)
13
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents test
setup, test methodology, and test results.
Human Body Model
Figure 6a shows the Human Body Model, and Figure 6b
shows the current waveform it generates when dis-
charged into a low-impedance state. This model consists
of a 100pF capacitor charged to the ESD voltage of inter-
est, which is then discharged into the test device through
a 1.5kI resistor.
IEC 61000-4-2
The main 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 ESD test model (Figure 7a) the ESD-
withstand voltage measured to this standard is generally
lower than that measured using the Human Body Model.
Figure 7b shows the current waveform for the Q8kV IEC
61000-4-2 Level 4 ESD Contact Discharge test.
The Air Gap Discharge test involves approaching the
device with a charged probe. The Contact Discharge
method connects the probe to the device before the
probe is energized.
Layout
High-speed switches require proper layout and design
procedures for optimum performance. Keep design-
controlled impedance PCB traces as short as pos-
sible or follow impedance layouts per the SuperSpeed
USB specification. Ensure that power-supply bypass
capacitors are placed as close as possible to the device.
Multiple bypass capacitors are recommended. Connect
all grounds and the exposed pad to large ground planes
where possible.
Figure 6a. Human Body ESD Test Model
Figure 6b. Human Body Current Waveform
Figure 7a. IEC 61000-4-2 ESD Test Model
Figure 7b. IEC 61000-4-2 ESD Generator Current Waveform
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
CS
100pF
RC
1M
RD
1500
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
IP 100%
90%
36.8%
tRL
TIME
tDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
IR
10%
0
AMPERES
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
CS
150pF
RC
50M
TO 100M
RD
330
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
100%
90%
60ns
10%
tR = 0.7ns TO 1ns
I PEAK
I
30ns
t
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| MAX14979EETX+ | 功能描述:模擬開關(guān) IC 7 Ch LVDS Switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
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| MAX14979EETX+T | 功能描述:模擬開關(guān) IC 7 Ch LVDS Switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX14979EETX+TGH7 | 功能描述:模擬開關(guān) IC ESD Protection LVDS Switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX1497EAI | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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