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參數(shù)資料
| 型號： | SP3223EEY-L/TR |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS232 INTELLIGNT 20TSSOP |
| 產(chǎn)品變化通告： | Packaging Change 15/Jul/2010 |
| 標(biāo)準(zhǔn)包裝： | 1,500 |
| 類型： | 收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 2/2 |
| 規(guī)程： | RS232 |
| 電源電壓： | 3 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 帶卷 (TR) |
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (50)668-707 www.exar.com
SP3223E/EB/EU_0_06272
2
Figure 6. Charge Pump - Phase
Figure 7. Charge Pump - Phase 2
VCC = +5V
–5V
+5V
VSS Storage Capacitor
VDD Storage Capacitor
C1
C2
C3
C4
+
–
VCC = +5V
–10V
VSS Storage Capacitor
VDD Storage Capacitor
C1
C2
C3
C4
+
–
Ch1 2.00V Ch2 2.00V M 1.00ms Ch1 1.96V
2
1
T
[
]
T
2
+6V
a) C2+
b) C2-
-6V
0V
Figure 8. Charge Pump Waveforms
Figure 9. Charge Pump - Phase 3
VCC = +5V
–5V
+5V
–5V
VSS Storage Capacitor
VDD Storage Capacitor
C1
C2
C3
C4
+
–
Figure 20. Charge Pump - Phase 4
VCC = +5V
+10V
VSS Storage Capacitor
VDD Storage Capacitor
C1
C2
C3
C4
+
–
Minimum recommended charge pump capacitor value
Input Voltage V
CC
Charge pump capacitor value
3.0V to 3.6V
C - C4 = 0.F
4.5V to 5.5V
C = 0.047F, C2-C4 = 0.33F
3.0V to 5.5V
C - C4 = 0.22F
Table 4. Minimum Charge Pump Capacitor values
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|---|---|
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