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参数资料
| 型号： | LT1780 |
| 厂商： | Linear Technology Corporation |
| 元件分类： | 外设及接口 |
| 英文描述： | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
| 中文描述： | 单电源RS232C接口线路驱动器/接收器（单电源RS232C接口线收发器（2发2收）） |
| 文件页数： | 7/12页 |
| 文件大小： | 244K |
| 代理商： | LT1780 |
7
LT1780/LT1781
ESD PROTECTIOU
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 V
CC
, V
L
, 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
μ
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
μ
F
0.1
μ
F
0.1
μ
F
NC
C1
+
V
+
C1
–
C2
+
C2
–
V
–
DR2 OUT
LT1780
0.1
μ
F
ON/OFF
5V V
CC
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
5k
0.1
μ
F
0.1
μ
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
–12V
OUT
RS232 OUTPUT
RS232 OUTPUT
RS232 INPUT
RS232 INPUT
1780/81 TA03
LT1780
12V INPUT
U
TYPICAL APPLICATIO
相关PDF资料 |
PDF描述 |
|---|---|
| LT1781 | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
| LT1781CN | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
| LT1780CN | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
| LT1780CSW | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
| LT1781CS | Single Supply RS232C Line Driver/Receiver(?????μ?o?RS232C ?o?????????¨???2???2??????) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT17801IN | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Transceiver |
| LT1780CN | 功能描述:IC DVR/RCVR 5V RS232 DUAL 18-DIP RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1780CN#PBF | 功能描述:IC DVR/RCVR 5V RS232 DUAL 18-DIP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:RS-232 & USB Transceiver 标准包装:2,000 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-SSOP（0.209"，5.30mm 宽） 供应商设备封装:16-SSOP 包装:带卷 (TR) 其它名称:296-19849-2 |
| LT1780CSW | 功能描述:IC DVR/RCVR 5V RS232 DUAL 18SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| LT1780CSW#PBF | 功能描述:IC DVR/RCVR 5V RS232 DUAL 18SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:RS-232 & USB Transceiver 标准包装:2,000 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-SSOP（0.209"，5.30mm 宽） 供应商设备封装:16-SSOP 包装:带卷 (TR) 其它名称:296-19849-2 |
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