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| 型号： | LT1039ACSW16#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/14页 |
| 文件大小： | 0K |
| 描述： | IC DRIVR/RCVR TRIPL-RS232 18SOIC |
| 标准包装： | 1,000 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 3/3 |
| 规程： | RS232 |
| 电源电压： | 5 V ~ 15 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) |
LT1039A/LT1039A-16
7
1039afb
For more information www.linear.com/1039
When driving CMOS logic from a receiver that will be
used in the shutdown mode and there is no other active
receiver on the line, a 51k resistor can be placed from the
logic input to VCC to force a definite logic level when the
receiver output is in a high impedance state.
applicaTions inForMaTion
Driving CMOS Logic from a Receiver
Input Overvoltage Protection
5kΩ Impedance Matching
Keeping Alive One Receiver While in Shutdown
RS232 Compatible Shutdown Control Line
LT1039A
RECEIVER
RS232
INPUT
ON/OFF
INPUT
LOGIC
OUTPUT
*FORCES LOGIC INPUT STATE
WHEN VON/OFF IS LOW
51k*
VCC
1039A AI06
CMOS
LOGIC
RS232
INPUT
LOGIC
OUTPUT
RECEIVER
1039A AI07
30k
1k
30V
5.6k
1039A AI08
RS232
INPUT
LOGIC
OUTPUT
RECEIVER
30k
5.6k
LT1039A
25k
LOGIC
SHUTDOWN
INPUT
2
3
16
17
BIAS
RS232
INPUT
ON/OFF
LOGIC
OUTPUT
1039A AI09
LT1039A
25k
2
3
16
17
BIAS
RS232
SHUTDOWN
INPUT
ON/OFF
1039A AI10
To protect against receiver input overloads in excess of
±30V, a voltage clamp can be placed on the data line and
still maintain RS232 compatibility.
The receiver input impedance of the LT1039A is nominally
30kΩ. For applications requiring a 5kΩ input impedance,
a 5.6k resistor can be connected from the receiver input
to ground.
Driver inputs should not be allowed to float. Any unused
inputs should be tied to VCC.
The BIAS pin is used to “keep alive” one receiver while
in the shutdown mode (all other circuitry being inactive).
This allows a system to be in shutdown and still have one
active receiver for transferring data.
It can also be used to make an RS232 compatible shut-
down control line. Driving the BIAS pin low through a
resistance of 24k to 30k keeps the receiver active. Do not
drive the BIAS pin directly from a logic output without the
series resistor. An unused BIAS pin should be left open.
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相关代理商/技术参数 |
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| LT1039AMJ | 制造商:Linear Technology 功能描述:Triple Transmitter/Receiver RS-232 18-Pin CDIP |
| LT1039CJ | 制造商:Linear Technology 功能描述:Triple Transmitter/Receiver RS-232 18-Pin CDIP |
| LT1039CN | 功能描述:IC DRIVR/RCVR TRIPLE-RS232 18DIP 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:121 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:3 V ~ 3.6 V 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-DFN（3x3） 包装:管件 |
| LT1039CN#PBF | 功能描述:IC DRIVR/RCVR TRIPLE-RS232 18DIP 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 |
| LT1039CN16 | 功能描述:IC DRIVR/RCVR TRIPLE-RS232 16DIP 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:121 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:3 V ~ 3.6 V 安装类型:表面贴装 封装/外壳:10-WFDFN 裸露焊盘 供应商设备封装:10-DFN（3x3） 包装:管件 |
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