MAX4888A/MAX4889A
5.0Gbps PCI Express Passive Switches
Pin Description
| PIN | NAME | FUNCTION | |
MAX4888A |
| MAX4889A | ||
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1, 10, 12, 14, |
| 1, 4, 10, 14, 17, | GND | Ground |
20, 25, 27 |
| 19, 21, 39, 41 | ||
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2 |
| 9 | SEL | Digital Control Input |
3, 9 |
| — | N.C. | No Connection. Not internally connected. |
4 |
| 2 | COM1+ | Analog Switch 1. Common Positive Terminal. |
5 |
| 3 | COM1- | Analog Switch 1. Common Negative Terminal. |
6 |
| 6 | COM2+ | Analog Switch 2. Common Positive Terminal. |
7 |
| 7 | COM2- | Analog Switch 2. Common Negative Terminal. |
8, 11, 13, 19, |
| 5, 8, 13, 18, |
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| 20, 30, | V+ | Bypass V+ to GND with a 0.1µF capacitor placed as close to the device as possible | |
26, 28 |
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| 40, 42 |
| (See the Board Layout section). | |
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15 |
| 31 | NO2- | Analog Switch 2. Normally Open Negative Terminal. |
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16 |
| 32 | NO2+ | Analog Switch 2. Normally Open Positive Terminal. |
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17 |
| 33 | NO1- | Analog Switch 1. Normally Open Negative Terminal. |
18 |
| 34 | NO1+ | Analog Switch 1. Normally Open Positive Terminal. |
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21 |
| 35 | NC2- | Analog Switch 2. Normally Closed Negative Terminal. |
22 |
| 36 | NC2+ | Analog Switch 2. Normally Closed Positive Terminal. |
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23 |
| 37 | NC1- | Analog Switch 1. Normally Closed Negative Terminal. |
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24 |
| 38 | NC1+ | Analog Switch 1. Normally Closed Positive Terminal. |
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— |
| 11 | COM3+ | Analog Switch 3. Common Positive Terminal. |
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— |
| 12 | COM3- | Analog Switch 3. Common Negative Terminal. |
— |
| 15 | COM4+ | Analog Switch 4. Common Positive Terminal. |
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| 16 | COM4- | Analog Switch 4. Common Negative Terminal. |
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| 22 | NO4- | Analog Switch 4. Normally Open Negative Terminal. |
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— |
| 23 | NO4+ | Analog Switch 4. Normally Open Positive Terminal. |
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— |
| 24 | NO3- | Analog Switch 3. Normally Open Negative Terminal. |
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— |
| 25 | NO3+ | Analog Switch 3. Normally Open Positive Terminal. |
— |
| 26 | NC4- | Analog Switch 4. Normally Closed Negative Terminal. |
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| 27 | NC4+ | Analog Switch 4. Normally Closed Positive Terminal. |
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| 28 | NC3- | Analog Switch 3. Normally Closed Negative Terminal. |
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| 29 | NC3+ | Analog Switch 3. Normally Closed Positive Terminal. |
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EP |
| EP | EP | Exposed Paddle. Connect EP to GND. |
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6 _______________________________________________________________________________________
