参数资料
| 型号： | MAX4649EKA-T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/10页 |
| 文件大小： | 0K |
| 描述： | IC SWITCH SPDT SOT23-8 |
| 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 SPDT |
| 导通状态电阻： | 45 欧姆 |
| 电压电源： | 单/双电源 |
| 电压 - 电源，单路/双路(±)： | 9 V ~ 36 V，±4.5 V ~ 20 V |
| 电流 - 电源： | 1µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 |
| 供应商设备封装： | SOT-23-8 |
| 包装： | 带卷 (TR) |
| 其它名称： | Q6481371 |
Pin Description
PIN
NAME
FUNCTION
1
COM
Analog Switch Common
2
NC
Normally Closed Switch Terminal. NC is connected to COM when IN is low.
3
GND
Ground
4
V+
Positive Supply Voltage Input
5
N.C.
No Connection
6
IN
Digital Control Input
7
V-
Negative Supply Voltage Input
8
NO
Normally Open Switch Terminal. NO is connected to COM when IN is high.
MAX4649
Detailed Description
The MAX4649 is a high-voltage, single-pole/double-
throw (SPDT) analog switch that operates from dual
±4.5V to ±20V supplies or from a single +9V to +36V
supply. The MAX4649 has one normally closed (NC)
switch and one normally open (NO) switch. CMOS
switch construction allows bidirectional processing of
rail-to-rail analog signals.
The MAX4649 has break-before-make switching. The
transition time for switching from one input to the other
is typically 90ns. The off-leakage is typically less than
10pA, and on-leakage is typically less than 20pA.
Applications Information
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 devices.
Always sequence V+ on first, then V-, followed by the
logic inputs, NO_, or COM. If power-supply sequenc-
ing is not possible, add two small signal diodes (D1,
D2) in series with supply pins (Figure 1). Adding
diodes reduces the analog signal range to one diode
drop below V+ and one diode drop above V-, but does
not affect the device’s low switch resistance and low
45
, SPDT Analog Switch in SOT23-8
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
0.000001
0.0001
0.00001
0.1
0.01
0.001
1
10
100
1000
02 3
1
456
78 9 10 11 12 13
SUPPLY CURRENT
vs. LOGIC VOLTAGE
MAX4649
toc10
IN (V)
I+
(
A)
14 15
V+ = +15V
V- = -15V
-40
-30
-20
-10
0
10
20
30
40
-15
-5
-10
0
5
10
15
CHARGE INJECTION
vs. VCOM
MAX4649
toc11
VCOM (V)
CHARGE
(pC)
A: V+ = +15V, V- = -15V
B: V+ = +12V, V- = 0
A
B
0
1.5
1.0
0.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
010
20
30
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
MAX4649
toc12
V+ (V)
LOGIC
THRESHOLD
(V)
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