• - 交流-直流(AC-DC)控制器和稳压器
• - 直流-直流(DC-DC)控制器、转换器和稳压器
• - 电压和电流管理
• - 通讯IC
• - 驱动器
• - 热管理

• - 时钟及数据分配
• - 标准逻辑

• - 放大器和比较器
• - 模拟开关
• - 数字电位计
• - 接口
• - EMI和RFI滤波器

• - EEPROM存储器
• - 非易失性只读存储器(NVRAM)
• - SRAM存储器

说明

The SN75LBC187 is a low-power LinBiCMOS^TM device containing three drivers, five receivers, and a switched-capacitor voltage converter. The SN75LBC187 provides a single chip and single 5-V supply interface between the asynchronous communications element and the serial port connector of the data terminal equipment (DTE). This device has been designed to conform to ANSI Standards EIA/TIA-232-E, EIA/TIA-562, and ITU recommendation V.28.

The switched-capacitor voltage converter of the SN75LBC187 uses four small external capacitors to generate the positive and negative voltages required by EIA/TIA-232-E (and V.28) line drivers from a single 5-V input. The drivers feature output slew-rate limiting to eliminate the need for external filter capacitors.

特性

• Single IC and Single 5-V Supply Interface for Serial Communication Ports
• Meets or Exceeds the Requirements of ANSI Standards EIA/TIA-232-E-1991, EIA/TIA-562, and ITU Recommendation V.28
• Switched-Capacitor Voltage Converter Eliminates Need for ±12-V Supplies
• Voltage Converter Operates With Low Capacitance . . . 0.1 uF Min
• Designed for Data Rates up to 120 kb/s Over 3-m Cable
• Available in Shrink Small-Outline 25-mil- Pitch Package
• Shutdown Mode to Save Power When Not in Use
• ±30-V Receiver Input Voltage Range
• LinBiCMOS^TM Process Technology
• Applications
  • Laptop or Notebook Computers
  • Portable Terminals
  • Single-Board Computers
  • Portable Test Equipment

  LinBiCMOS and LinASIC are trademarks of Texas Instruments Incorporated.