Maxim > 方案 > 超声
键控器
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| 显示 |
标题/型号 |
关键优势 |
| QV PDF |
低电荷注入、16通道、高压模拟开关
MAX14800, MAX14801, MAX14802, MAX14803
| 具有低电荷注入、低电容和高速SPI接口，集成过压保护 |
| QV PDF |
低电荷注入、8通道、高压模拟开关，提供20MHz串行接口
MAX4800A, MAX4802A
| 该系列产品可提供低电荷注入、低电容特性和高速SPI接口 |
| QV PDF |
2线接口、低EMI键盘开关控制器/GPO
MAX7359
| 低电压、低EMI、低电源电流按键开关控制器，可监测64个按键，无需外部元件 |
| QV PDF |
2线接口、低EMI键盘开关和发声控制器
MAX7347, MAX7348, MAX7349
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| Key Specifications:
Keyswitch Controllers |
| Part Number |
Interface |
Max. Keys |
I2C Interface Voltage |
Typ. Supply Current (µA) |
Typ. Shutdown Current (µA) |
INT Output |
Key Scan I2C Slave IDs |
Sounder I2C Slave IDs |
Sounder Output |
GPOs |
ALERT Input |
Supply Voltage (V) |
Package |
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MAX7347
|
Serial 2-Wire 400kbit
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24
|
2.4 to 5.5
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75
|
7.5
|
Yes
|
4
|
4
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Yes
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6 + 1(INT)
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Yes
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2.4 to 3.6
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QSOP/16
TQFN/16
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MAX7348
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Serial 2-Wire 400kbit
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40
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2.4 to 5.5
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75
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7.5
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Yes
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4
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4
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Yes
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3 + 1(INT)
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-
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2.4 to 3.6
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QSOP/20
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MAX7349
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Serial 2-Wire 400kbit
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64
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2.4 to 5.5
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75
|
7.5
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Yes
|
1
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-
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-
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1 + 1(INT)
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-
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2.4 to 3.6
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QSOP/24
TQFN/24
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| See All Keyswitch Controllers (3) |
| Key Specifications:
Switches and Multiplexers (Low Voltage) |
| Part Number |
Configuration |
Number of Channels |
Normally (Open/Closed) |
VSUPPLY, Single (min) (V) |
VSUPPLY, Single (max) (V) |
VSUPPLY, Dual (min) (±V) |
VSUPPLY, Dual (max) (±V) |
Bandwidth (MHz) |
IL (OFF) (max) (nA) |
tON (max) (nS) |
tOFF (max) (nS) |
CON (pF) |
COFF (pF) |
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MAX4800A
|
SPST
|
8
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Open
|
40
|
200
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40
|
100
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20
|
2000
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5,000
|
5,000
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36
|
11
|
| See All Switches and Multiplexers (Low Voltage) (158) |
| Key Specifications:
Switches and Multiplexers (Mid Voltage) |
| Part Number |
Configuration |
Number of Channels |
Normally (Open/Closed) |
VSUPPLY, Single (min) (V) |
VSUPPLY, Single (max) (V) |
VSUPPLY, Dual (min) (±V) |
VSUPPLY, Dual (max) (±V) |
Bandwidth (MHz) |
IL (OFF) (max) (nA) |
tON (max) (nS) |
tOFF (max) (nS) |
CON (pF) |
COFF (pF) |
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MAX4800A
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SPST
|
8
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Open
|
40
|
200
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40
|
100
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20
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2000
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5,000
|
5,000
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36
|
11
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MAX4802A
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SPST
|
8
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Open
|
40
|
200
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40
|
100
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20
|
2000
|
5,000
|
5,000
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36
|
11
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| See All Switches and Multiplexers (Mid Voltage) (297) |
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