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. The receivers can accept ±30 V without damage. The device also features a reduced power or shutdown mode that cuts the quiescent power to the IC when not transmitting data between the CPU and peripheral.

The SN75LBC187 has been designed using LinBiCMOS^TM technology and cells contained in the Texas Instruments LinASIC^TM library. The SN75LBC187 is characterized for operation from 0°C to 70°C.

NOTE:
This device includes circuit designs and process technologies that have patents pending.

• 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
• LinBiCMOSTM Process Technology
• Applications
• Laptop or Notebook Computers
• Portable Terminals
• Single-Board Computers
• Portable Test Equipment

LinBiCMOS and LinASIC are trademarks of Texas Instruments Incorporated.

• Drivers per package
• 3
• Receivers per package
• 5
• Logic voltage (Min) (V)
• 5
• Data rate (Max) (kbps)
• 120
• Main supply voltage (Nom) (V)
• 5
• ESD HBM (kV)
• 0
• Rating
• Catalog
• Operating temperature range (C)
• 0 to 70
• Vout (Typ) (V)
• 7

SN75LBC187的完整型号有：SN75LBC187DBR，以下是这些产品的关键参数及官网采购报价：

SN75LBC187DBR，工作温度：0 to 70，封装：SSOP (DB)-28，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN75LBC187DBR的批量USD价格：3.118（1000+）

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