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參數(shù)資料
| 型號： | ICL3238IA-T |
| 廠商： | Intersil |
| 文件頁數(shù)： | 13/18頁 |
| 文件大小： | 0K |
| 描述： | IC 5DRVR/3RCVR RS232 3V 28-SSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 收發(fā)器 |
| 驅(qū)動(dòng)器/接收器數(shù)： | 5/3 |
| 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： | 28-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-SSOP |
| 包裝： | 帶卷 (TR) |
4
FN4876.10
March 1, 2006
Pin Descriptions
PIN
FUNCTION
VCC
System power supply input (3.0V to 5.5V).
V+
Internally generated positive transmitter supply (+5.5V).
V-
Internally generated negative transmitter supply (-5.5V).
GND
Ground connection.
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
RS-232 level (nominally
±5.5V) transmitter outputs.
RIN
RS-232 compatible receiver inputs.
ROUT
TTL/CMOS level receiver outputs.
ROUTB
TTL/CMOS level, noninverting, always enabled receiver outputs.
INVALID
Active low output that indicates if no valid RS-232 levels are present on any receiver input.
READY
Active high output that indicates when the ICL32XX is ready to transmit (i.e., V-
≤ -4V)
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 powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high).
Typical Operating Circuits
ICL3224
ICL3226
19
VCC
T1OUT
T2OUT
T1IN
T2IN
T1
T2
0.1
F
+
0.1
F
+
0.1
F
13
12
17
8
2
4
3
7
V+
V-
C1+
C1-
C2+
C2-
+
0.1
F
5
6
R1OUT
R1IN
16
5k
R2OUT
R2IN
9
10
5k
15
C1
C2
+ C3
C4
READY
1
GND
+3.3V
+
0.1
F
18
TTL/CMOS
LOGIC
RS-232
LEVELS
R1
R2
FORCEON
FORCEOFF
14
20
VCC
11
INVALID
TO POWER
CONTROL
LEVELS
LOGIC
15
VCC
T1OUT
T1IN
T1
0.1
F
+0.1F
+
0.1
F
11
13
2
4
3
7
V+
V-
C1+
C1-
C2+
C2-
+
0.1
F
5
6
R1OUT
R1IN
R1
8
9
5k
C1
C2
+ C3
C4
READY
1
GND
+3.3V
+
0.1
F
14
TTL/CMOS
LOGIC
RS-232
LEVELS
FORCEON
FORCEOFF
12
16
VCC
10
INVALID
TO POWER
CONTROL
LOGIC
LEVELS
ICL3224, ICL3226, ICL3238, ICL3244
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