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參數(shù)資料
| 型號(hào)： | ISL4223EIR |
| 廠商： | Intersil |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX RS232 2.7-5.5V ESD 20QFN |
| 標(biāo)準(zhǔn)包裝： | 60 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 2/2 |
| 規(guī)程： | RS232 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-VQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 20-QFN 裸露焊盤（5x5） |
| 包裝： | 管件 |
3
FN6045.6
May 13, 2010
Pin Descriptions
PIN
FUNCTION
VCC
System power supply input (2.7V to 5.5V).
V+
Internally generated positive transmitter supply (+5.5V).
V-
Internally generated negative transmitter supply (-5.5V).
GND
Ground connection. This is also the potential of the thermal pad (PD)
C1+
External capacitor (voltage doubler) is connected to this lead.
C1-
External capacitor (voltage doubler) is connected to this lead.
C2+
External capacitor (voltage inverter) is connected to this lead.
C2-
External capacitor (voltage inverter) is connected to this lead.
TIN
TTL/CMOS compatible transmitter Inputs.
TOUT
±15kV ESD Protected, RS-232 level (nominally ±5.5V) transmitter outputs.
RIN
±15kV ESD Protected, RS-232 compatible receiver inputs.
ROUT
TTL/CMOS level receiver outputs.
INVALID
Active low output that indicates if no valid RS-232 levels are present on any receiver input.
FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2).
FORCEON
Active high input to override automatic power-down circuitry thereby keeping transmitters active. (FORCEOFF must be high).
EN
Active low receiver enable control.
PD
Exposed Thermal Pad. Connect to GND.
Typical Operating Circuits
ISL3232E
14
VCC
T1OUT
T2OUT
T1IN
T2IN
T1
T2
0.1F
+
0.1F
+
0.1F
9
8
12
5
15
1
16
4
V+
V-
C1+
C1-
C2+
C2-
+
0.1F
2
3
R1OUT
R1IN
11
5k
Ω
R2OUT
R2IN
6
7
5k
Ω
10
C1
C2
+
C3
C4
GND
+3.3V
+ 0.1F
13
TTL/CMOS
LOGIC LEVELS
RS-232
LEVELS
R1
R2
ISL3232E, ISL4221E, ISL4223E
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