LTC1348 3.3V/5V Low Power RS232 3-Driver/5-Receiver Transceiver
The LTC™1348 is a 3-driver/5-receiver RS232 transceiver with very low supply current. The charge pump only requires five 0.1 µF capacitors. The LTC1348 provides full RS232 output levels when operated over a wide supply range of 3V to 5.5V The transceiver operates in one of four modes: Normal, Receiver Disable, Receiver Alive and Shutdown. In Normal or Receiver Disable mode, ICC is only 600µA at 3.3V and 800µA at 5V in the no load condition. In Shutdown mode, the supply current is further reduced to 0.2µA. In Receiver Alive mode, all five receivers are kept alive and the supply current is 15µA. All RS232 outputs assume a high impedance state in Shutdown or Receiver Alive mode or with the power off. The receiver outputs assume a high impedance state in Receiver Disable or with the power off. The LTC1348 is fully compliant with all data rate and overvoltage RS232 specifications. The transceiver operates up to 120kbaud with all drivers loaded with 1000pF, 3kohms. Both driver outputs and receiver inputs can be forced to �25V without damage and can survive multiple ±10kV ESD strikes
产品特点 Features
- Low Supply Current: 600µA at 3.3V
- Supply Current in Shutdown: 0.2µA
- Supply Current in Receiver Alive Mode: 15µA
- ESD Protection over ±10kV
- Operates from a Single 3V to 5.5V Supply
- Operates to 120kBaud with 0.1µF Flying Capacitors
- Three-State Outputs Are High Impedance When Off
- Output Overvoltage Does Not Force Current Back into Supplies
- RS232 I/O Lines Can Be Forced to ±25V Without Damage
- Flowthrough Architecture
参数
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应用
- Notebook Computers
- Palmtop Computers
- Printers
- Portable Instruments
典型应用图
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LTC1348 订购信息和价格参考Package Variations and Pricing
| 器件型号 |
封装 |
引脚 |
温度 |
价格 (以 1 ~ 99 片为批量) |
价格 (以 1000 片为批量) * |
| LTC1348CG |
SSOP |
28 |
C |
$6.75 |
$5.45 |
| LTC1348CG#PBF |
SSOP |
28 |
C |
$6.75 |
$5.45 |
| LTC1348CG#TR |
SSOP |
28 |
C |
|
$5.55 |
| LTC1348CG#TRPBF |
SSOP |
28 |
C |
|
$5.55 |
| LTC1348CNW |
PDIP |
28 |
C |
$6.25 |
$5.05 |
| LTC1348CNW#PBF |
PDIP |
28 |
C |
$6.25 |
$5.05 |
| LTC1348CSW |
SO |
28 |
C |
$6.25 |
$5.05 |
| LTC1348CSW#PBF |
SO |
28 |
C |
$6.25 |
$5.05 |
| LTC1348CSW#TR |
SO |
28 |
C |
|
$5.15 |
| LTC1348CSW#TRPBF |
SO |
28 |
C |
|
$5.15 |
| LTC1348IG |
SSOP |
28 |
I |
$7.45 |
$5.85 |
| LTC1348IG#PBF |
SSOP |
28 |
I |
$7.45 |
$5.85 |
| LTC1348IG#TR |
SSOP |
28 |
I |
|
$5.95 |
| LTC1348IG#TRPBF |
SSOP |
28 |
I |
|
$5.95 |
| LTC1348INW |
PDIP |
28 |
I |
$6.95 |
$5.60 |
| LTC1348INW#PBF |
PDIP |
28 |
I |
$6.95 |
$5.60 |
| LTC1348ISW |
SO |
28 |
I |
$6.95 |
$5.60 |
| LTC1348ISW#PBF |
SO |
28 |
I |
$6.95 |
$5.60 |
| LTC1348ISW#TR |
SO |
28 |
I |
|
$5.70 |
| LTC1348ISW#TRPBF |
SO |
28 |
I |
|
$5.70 |
LTC1348 数据手册及相关资料下载
- 数据手册 (英文) : LTC1348 - 3.3V/5V Low Power RS232 3-Driver/5-Receiver Transceiver.PDF
- 设计要点 (英文) : DN14 - Extending the Applications of 5V Powered RS232 Transceivers.PDF
- 设计要点 (英文) : DN27 - Design Considerations for RS-232 Interfaces.PDF
- 设计要点 (英文) : DN29 - A Single Supply RS232 Interface for Bipolar A to D Converters.PDF
- 设计要点 (英文) : DN64 - RS232 Transceivers for Hand Held Computers Withstand 10kV ESD.PDF
- 设计要点 (英文) : DN71 - Regulator Circuit Generates Both 3.3V and 5V Outputs from 3.3V or 5V to Run Computers and RS232.PDF
- 设计要点 (英文) : DN75 - RS232 Interface Circuits for 3.3V Systems.PDF
- 设计要点 (英文) : DN80 - ESD Testing for RS232 Interface Circuits.PDF
- 可靠性数据 : R277 Reliability Data .PDF
- 产品选型卡 : LTM2882 - Isolated RS232 + 1W Power.PDF
- 产品选型卡 : RS232 Quick Guide.PDF
