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参数资料
| 型号： | LT1781ISW#TR |
| 厂商： | Linear Technology |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC TXRX 5V RS232 DUAL LP 16SOIC |
| 标准包装： | 1,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 2/2 |
| 规程： | RS232 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 带卷 (TR) |
7
LT1780/LT1781
ESD PROTECTIO
U
The RS232 line inputs of the LT1780/LT1781 have on-chip
protection from ESD transients up to
±15kV air gap and
±8kV contact tested to IEC-1000-4-2 test methods. The
protection structures act to divert the static discharge
safely to system ground. In order for the ESD protection to
function effectively, the power supply and ground pins of
the circuit must be connected to ground through low
impedances. The power supply decoupling capacitors and
charge pump storage capacitors provide this low imped-
ance in normal application of the circuit. The only con-
straint is that low ESR capacitors must be used for
bypassing and charge storage. ESD testing must be done
with pins VCC, VL, V+, V –, and GND shorted to ground or
connected with low ESR capacitors.
Operation Using 5V and 12V Power Supplies
1780 ESD TC
0.1
F
RS232
LINE PINS
PROTECTED
TO IEC-1000-4-2
LEVEL 4
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
0.1
F
0.1
F
0.1
F
NC
C1+
V+
C1–
C2+
C2–
V–
DR2 OUT
LT1780
0.1
F
ON/OFF
5V VCC
GND
DR1 OUT
RX1 IN
RX1 OUT
DR1 IN
DR2 IN
RS232
LINE PINS
PROTECTED
TO IEC-1000-4-2
LEVEL 4
RX2 IN
RX2 OUT
ESD Test Circuit
5k
0.1
F
0.1
F
LOGIC
INPUTS
LOGIC
OUTPUTS
ON/OFF
18
10
13
11
12
6
5
4
2
16
9
14
8
15
7
3
17
5V INPUT
–12VOUT
RS232 OUTPUT
RS232 INPUT
1780/81 TA03
LT1780
12V INPUT
U
TYPICAL APPLICATIO
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1781SW | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Transceiver |
| LT1782 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower, Over-The-Top SOT-23, Rail-to-Rail Input and Output Op Amp |
| LT1782_1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower, Over-The-Top SOT-23, Rail-to-Rail Input and Output Op Amp |
| LT1782CS5 | 制造商:Linear Technology 功能描述:OP Amp Single GP R-R I/O 制造商:Linear Technology 功能描述:OP Amp Single GP R-R I/O ±9V/18V 5-Pin TSOT-23 |
| LT1782CS5#PBF | 制造商:Linear Technology 功能描述:OP Amp Single GP R-R I/O 制造商:Linear Technology 功能描述:OP AMP 18V 200KHZ 0.07V/US |
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