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参数资料
| 型号： | MAX335CNG+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 10/13页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH OCTAL SPST 24DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 15 |
| 功能： | 开关 |
| 电路： | 8 x SPST - NO |
| 导通状态电阻： | 150 欧姆 |
| 电压电源： | 双电源 |
| 电压 - 电源，单路/双路(±)： | ±4.5 V ~ 20 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 1420 (CN2011-ZH PDF) |
______________Detailed Description
Serial Digital Interface
Basic Operation
Refer to Figure 2. The MAX335 interface can be
thought of as an 8-bit shift register controlled by
CS.
While
CS is low, input data appearing at DIN is clocked
into the shift register synchronous with SCLK’s rising
edge. The data is an 8-bit word, each bit controlling
one of eight switches in the MAX335 (Table 1). DOUT is
the output of the shift register, with data appearing syn-
chronous with SCLK’s falling edge. Data at DOUT is
simply the input data delayed by eight clock cycles.
When shifting the input data, D7 is the first bit in and
out of the shift register. While shifting data, the switches
remain in their original configuration. When the 8 bits of
data have been shifted in,
CS is brought high. This
updates the new switch configuration and inhibits fur-
ther data from entering the shift register. Transitions at
DIN and SCLK have no effect when
CS is high, and
DOUT holds the last bit in the shift register.
The MAX335 three-wire serial interface is compatible
with the SPI and Microwire standards. If interfacing
with a Motorola processor serial interface, set CPOL = 0.
The MAX335 is considered a slave device (Figures 2
and 3). Upon power-up, the shift register contains all
zeros, and all switches are off.
The latch that drives the analog switch is only
updated on the rising edge of
CS when SCLK is low.
If SCLK is high when
CS rises, the latch will not be
updated until SCLK goes low. The CPOL = 1, CPHA = 1
SPI configuration does not update the latch correctly.
Daisy Chaining
For a simple interface using several MAX335s, “daisy
chain” the shift registers as shown in Figure 5. The
CS
pins of all devices are connected together, and a
stream of data is shifted through the MAX335s in
series. When
CS is brought high, all switches are
updated simultaneously. Additional shift registers may
be included anywhere in series with the MAX335 data
chain.
Addressable Serial Interface
When several serial devices are configured as slaves,
addressable by the processor, DIN pins of each
MAX335 are connected together (Figure 6). Address
decode logic individually controls
CS of each slave
device. When a slave is selected, its
CS is brought low,
data is shifted in, and
CS is brought high to latch the
data. Typically, only one slave is addressed at a time.
DOUT is not used.
Digital Feedthrough
Digital feedthrough energy measures 100nV-sec, which
means that with no filtering at the signal channel,
feedthrough from a sharply rising clock edge into an
unfiltered switch channel can be measured at 1Vp-p for
100ns. However, even 100pF capacitance in the switch
channel, when combined with the switch resistance,
yields a filter that reduces this transient to 10mVp-p
typical. To reduce digital feedthrough, hysteresis
(150mV typ) was added to the SCLK input so triangle
or sine waves may be used.
MAX335
Serial Controlled, 8-Channel SPST Switch
6
_______________________________________________________________________________________
NAME
FUNCTION
1
SCLK
Serial Clock Input
2
V+
Positive Supply Voltage
PIN
_____________________Pin Description
3
DIN
Serial Data Input
4
GND
Ground
8
COM1
Switch 1
7
NO1
Switch 1
6
COM
Switch 0
5
NO
Switch 0
13
COM4
Switch 4
12
COM3
Switch 3
11
NO3
Switch 3
10
COM2
Switch 2
9
NO2
Switch 2
14
NO4
Switch 4
15
COM5
Switch 5
16
NO5
Switch 5
17
COM6
Switch 6
18
NO6
Switch 6
19
COM7
Switch 7
20
NO7
Switch 7
21
V-
Negative Supply Voltage
22
DOUT
Serial Data Output
23
VL
Logic Supply/Reset
24
C
—
S
–
Chip Select
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX335CNG+ | 功能描述:模拟开关 IC Serial Controlled 8Ch SPST Switch RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX335CWG | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX335CWG+ | 功能描述:模拟开关 IC Serial Controlled 8Ch SPST Switch RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX335CWG+T | 功能描述:模拟开关 IC Serial Controlled 8Ch SPST Switch RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| MAX335CWG-T | 功能描述:模拟开关 IC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
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