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參數(shù)資料
| 型號： | MAX4674 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3V/5V, 4з, Wideband Quad 2:1 Analog Multiplexer |
| 中文描述： | 3V/5V、4Ω、寬帶四路2:1模擬多路復用器 |
| 文件頁數(shù)： | 7/13頁 |
| 文件大?。?/td> | 358K |
| 代理商： | MAX4674 |
M
3V/5V, 4
, Wideband Quad
2:1 Analog Multiplexer
_______________________________________________________________________________________
7
when V+ = +3V, the guaranteed minimum logic-high
threshold decreases to 2.0V.
Low-Voltage Operation
The MAX4674 operates from a single supply between
+1.8V and +5.5V. At room temperature, it actually
“
works
”
with a single supply near or below +1.7V; as
supply voltage decreases, however, switch on-resis-
tance becomes very high.
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings because stresses beyond the listed rat-
ings can cause permanent damage to the device.
Always sequence V+ on first, followed by the logic
inputs and analog signals. If power-supply sequencing
is not possible, add two small signal diodes (D1, D2) in
series with the supply pins for overvoltage protection
(Figure 1).
Adding diodes reduces the analog-signal range to one
diode drop below V+ and one diode drop above GND,
but does not affect the device
’
s low switch resistance
and low leakage characteristics. Device operation is
unchanged, and the difference between V+ and GND
should not exceed 6V. These protection diodes are not
recommended if signal levels must extend to ground.
High-Frequency Performance
In 50
systems, signal response is reasonably flat up
to 50MHz (see
Typical Operating Characteristics
).
Above 20MHz, the on response has several minor
peaks that are highly layout dependent. The problem is
not turning the switch on, but turning it off. The off-state
switch acts like a capacitor and passes higher frequen-
cies with less attenuation. At 10MHz, off-isolation is
about -50dB in 50
systems, becoming worse (approx-
imately 20dB per decade) as frequency increases.
Higher circuit impedances also degrade off-isolation.
Adjacent channel attenuation is about 3dB above that
of a bare IC socket and is entirely due to capacitive
coupling.
Chip Information
TRANSISTOR COUNT: 478
GND
V+
*INTERNAL PROTECTION DIODES
D2
EXTERNAL
BLOCKING DIODE
D1
EXTERNAL
BLOCKING DIODE
GND
V+
MAX4674
*
*
*
*
Figure 1. Overvoltage Protection Using External Blocking
Diodes
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4674EEE | 功能描述:多路器開關 IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（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 |
| MAX4674EEE+ | 功能描述:多路器開關 IC 3V/5V 4Ohm Wideband Quad 2:1 Analog MUX RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（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 |
| MAX4674EEE+T | 功能描述:多路器開關 IC 3V/5V 4Ohm Wideband Quad 2:1 Analog MUX RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（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 |
| MAX4674EEE-T | 功能描述:多路器開關 IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（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 |
| MAX4674EGE | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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