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參數(shù)資料
| 型號： | TRS202IPWR |
| 廠商： | Texas Instruments |
| 文件頁數(shù)： | 15/17頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DVR/RCVR RS232 ESD DL 16TSSOP |
| 標準包裝： | 1 |
| 類型： | 線路收發(fā)器 |
| 驅(qū)動器/接收器數(shù)： | 2/2 |
| 規(guī)程： | RS232 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 標準包裝 |
| 其它名稱： | 296-24991-6 |
www.ti.com
APPLICATION INFORMATION
11
10
8
1
2
3
4
7
ROUT2
DIN2
9
RIN1
16
13
12
15
14
DIN1
5
6
+
-
V
CC
C2+
C1+
GND
C1-
ROUT1
C2-
+
-
CBYPASS
=0.1 F,
m
V+
+
-
+
-
RIN2
+
-
DOUT1
DOUT2
C3canbeconnectedtoV
orGND.
CC
NOTES: A .Resistorvaluesshownarenominal.
V-
C1
0.1 F,
m
6.3V
C3
0.1 F
m
16V
C2
0.1 F,
m
16V
5kW
C4
0.1 mF,
16V
B.Nonpolarizedceramiccapacitorsareacceptable.Ifpolarizedtantalumorelectrolyticcapacitorsareused,theyshouldbe
connectedasshown.
Capacitor Selection
Electrostatic Discharge (ESD) Protection
5-V DUAL RS-232 LINE DRIVER/RECEIVER
WITH
±15-kV ESD PROTECTION
SLLS808 – JULY 2007
Figure 4. Typical Operating Circuit and Capacitor Values
The capacitor type used for C1–C4 is not critical for proper operation. The TRS202 requires 0.1-
μF capacitors,
although capacitors up to 10
μF can be used without harm. Ceramic dielectrics are suggested for the 0.1-μF
capacitors. When using the minimum recommended capacitor values, make sure the capacitance value does
not degrade excessively as the operating temperature varies. If in doubt, use capacitors with a larger (e.g., 2
×)
nominal value. The capacitors' effective series resistance (ESR), which usually rises at low temperatures,
influences the amount of ripple on V+ and V–.
Use larger capacitors (up to 10
μF) to reduce the output impedance at V+ and V–.
Bypass VCC to ground with at least 0.1 μF. In applications sensitive to power-supply noise generated by the
charge pumps, decouple VCC to ground with a capacitor the same size as (or larger than) the charge-pump
capacitors (C1–C4).
TI TRS202 devices have standard ESD protection structures incorporated on the pins to protect against
electrostatic discharges encountered during assembly and handling. In addition, the RS232 bus pins (driver
outputs and receiver inputs) of these devices have an extra level of ESD protection. Advanced ESD structures
were designed to successfully protect these bus pins against ESD discharge of
±15 kV when powered down.
7
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