参数资料
型号: MAX4645EUA+T
厂商: Maxim Integrated Products
文件页数: 8/11页
文件大小: 0K
描述: IC SWITCH SPST 8UMAX
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
功能: 开关
电路: 1 x SPST- NO
导通状态电阻: 2.5 欧姆
电压电源: 单电源
电压 - 电源,单路/双路(±): 1.8 V ~ 5 V
电流 - 电源: 100pA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-uMAX
包装: 带卷 (TR)
MAX4645/MAX4646
Fast, Low-Voltage, 2.5, SPST,
CMOS Analog Switches
6
_______________________________________________________________________________________
Detailed Description
The MAX4645/MAX4646 are low 2.5 max on-resis-
tance (at V+ = 5V), low-voltage analog switches that
operate from a +1.8V to +5.5V single supply. CMOS
switch construction allows processing analog signals
that are within the supply voltage range (GND to V+).
Applications Information
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 devices.
Always sequence V+ on first, followed by the logic
inputs, NO, or COM. 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 these diodes reduces the analog signal by
one diode drop below V+ and one diode drop above
GND, but does not affect the low switch resistance and
low leakage characteristics of the device. Device oper-
ation is unchanged, and the difference between V+ and
GND should not exceed 6V.
Although it is not required, power-supply bypassing
improves noise margin and prevents switching noise
from propagating from the V+ supply to other compo-
nents. A 0.1F capacitor, connected from V+ to GND,
is adequate for most applications.
Pin Description
POSITIVE SUPPLY
COM
NO
GND
Vg
V+
MAX4645
MAX4646
D2
D1
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
V+
COM
NO
NC
GND
IN
N.C.
5
6
SOT23-6
2
3
4
1
4
MAX
1
8
7
6
2, 3, 5
5
SOT23-5
2
3
4
1
2, 3, 5
4
MAX
8
7
6
1
5
6
SOT23-5
SOT23-6
Positive Supply Voltage
1
Analog Switch Common Terminal
2
Analog Switch Normally Open Terminal
2
Analog Switch Normally Closed Terminal
3
Ground
4
Logic Control Input
1
5
No Connection. Not internally connected.
MAX4646
MAX4645
NAME
PIN
FUNCTION
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