SN75LBC187

Supply voltage range, V_CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to 6 V
Positive output supply voltage range, V_DD . . . . . . . . . . . . . . . . . .  . . . . . . V_CC 0.3 V to 15 V
Negative output supply voltage range, VSS . . . . . . . . . . . . . . . . . . .. . . . . . . . . 0.3 V to 15 V
Input voltage range, V_I: RA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . ±30 V
                                       All other inputs . . . . . . . . . . . . . . . . . . . . . . .  . . 0.3 V to V_CC + 3 V
Output voltage range, V_O:DY . . . . . . . . . . . . . . . . . . . . . .. . 2 V_CC + 1.2 V to 2 V_CC 1.2 V
                                         All other outputs . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to V_CC + 3 V
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . .. . See Dissipation Rating Table
Operating free-air temperature range, T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . .  . 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . 260°C

‡ Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltages are with respect to the network ground terminal.

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 LinASICE library. The SN75LBC187 is characterized for operation from 0°C to 70°C.