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參數(shù)資料
| 型號： | ISL4270EIR-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| 中文描述： | TRIPLE LINE TRANSCEIVER, PQCC32 |
| 封裝： | 5 X 5 MM, PLASTIC, MO-220VHHD-2, QFN-32 |
| 文件頁數(shù)： | 6/13頁 |
| 文件大?。?/td> | 335K |
| 代理商： | ISL4270EIR-T |
2
Pinout
ISL4270E (QFN)
TOP VIEW
NC
C2+
C2-
V-
T1IN
T2IN
INVALID
T1OUT
T2OUT
T3OUT
R1IN
R2IN
R3IN
NC
T3
IN
FORCEON
R3
OU
T
R2
OU
T
V
L
R1
OU
T
C1-
V+
C1+
FORCE
OFF
V
CC
NC
GND
NC
7
11
12
13
14
15
9
10
6
1
2
3
4
5
8
16
18
19
24
23
22
21
20
17
27
28
29
30
31
25
26
32
NC
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. The switching point is a function of the VL voltage.
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. Swings between GND and VL.
VL
Logic-Level Supply. All TTL/CMOS inputs and outputs are powered by this supply.
INVALID
Active low output that indicates if no valid RS-232 levels are present on any receiver input. Swings between GND and VL.
FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2).
The switching point is a function of the VL voltage.
FORCEON
Active high input to override automatic powerdown circuitry thereby keeping transmitters active (FORCEOFF must be high). The
switching point is a function of the VL voltage.
ISL4270E
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