LT1537 Advanced Low Power 5V RS232 Transceiver with Small Capacitors
The LT™1537 is a three-driver, five-receiver RS232 transceiver, pin compatible with the LT1137A, offering performance improvements and two shutdown modes. The LT1537µs charge pump is designed for extended compliance and can deliver over 35mA of load current. Supply current is typically 8mA, competitive with similar CMOS devices. An advanced driver output stage operates up to 250kbaud while driving heavy capacitive loads. The LT1537 is fully compliant with all RS232 specifications. Special bipolar construction techniques protect the drivers and receivers beyond the fault conditions stipulated for RS232. Driver outputs and receiver inputs can be shorted to �25V without damaging the device or the power supply generator. In addition, the RS232 I/O pins are resilient to multiple �5kV ESD strikes. The transceiver has two shutdown modes. One mode disables the drivers and the charge pump, the other shuts down all circuitry. While shut down, the drivers and receivers assume high impedance output states
产品特点 Features
- Low Cost
- Uses Small Capacitors: 0.1µF, 0.2µF
- 1µA Supply Current in Shutdown
- 120kBaud Operation for RL = 3k, CL = 2500pF
- 250kBaud Operation for RL = 3k, CL = 1000pF
- CMOS Comparable Low Power: 40mW
- Operates from a Single 5V Supply
- Easy PC Layout: Flow-through Architecture
- Rugged Bipolar Design
- Outputs Assume a High Impedance State When Off or Powered Down
- Improved Protection: RS232 I/O Lines Can Be Forced to ±25V Without Damage
- Output Overvoltage Does Not Force Current Back into Supplies
- Absolutely No Latch-Up
- Available in SO Package
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应用
- Notebook Computers
- Palmtop Computers
典型应用图
参数
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LT1537 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) * |
| LT1537CG |
SSOP |
28 |
C |
$4.00 |
$3.20 |
| LT1537CG#PBF |
SSOP |
28 |
C |
$4.00 |
$3.20 |
| LT1537CG#TR |
SSOP |
28 |
C |
|
$3.30 |
| LT1537CG#TRPBF |
SSOP |
28 |
C |
|
$3.30 |
| LT1537CSW |
SO |
28 |
C |
$3.50 |
$2.80 |
| LT1537CSW#PBF |
SO |
28 |
C |
$3.50 |
$2.80 |
| LT1537CSW#TR |
SO |
28 |
C |
|
$2.90 |
| LT1537CSW#TRPBF |
SO |
28 |
C |
|
$2.90 |
LT1537 数据手册及相关资料下载
- 数据手册 (英文) : LT1537 - Advanced Low Power 5V RS232 Transceiver with Small Capacitors.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 : R356 Reliability Data .PDF
- 产品选型卡 : LTM2882 - Isolated RS232 + 1W Power.PDF
- 产品选型卡 : RS232 Quick Guide.PDF
