PinoutSpecifications Symbol Parameter Value Unit VDD Supply Voltage (Note 1) 15 V VSS Supply Voltage (Note 1) -15 V VCC Supply Voltage (Note 1) 10 V VI Input Voltage Range (DRIVER) -15 to 7 V VI Input Voltage Range (RECEIVER) -30 to 30 V VO Output Voltage ...
ST75185: PinoutSpecifications Symbol Parameter Value Unit VDD Supply Voltage (Note 1) 15 V VSS Supply Voltage (Note 1) -15 V VCC Supply Voltage (Note 1) 10 V VI Input Voltage Ra...
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Symbol | Parameter | Value | Unit |
VDD | Supply Voltage (Note 1) | 15 | V |
VSS | Supply Voltage (Note 1) | -15 | V |
VCC | Supply Voltage (Note 1) | 10 | V |
VI | Input Voltage Range (DRIVER) | -15 to 7 | V |
VI | Input Voltage Range (RECEIVER) | -30 to 30 | V |
VO | Output Voltage Range (DRIVER) | -15 to 15 | V |
IO | Receiver Low Level Output Current | 20 | mA |
PD | Continuous Total Power Dissipation | See Dissipation Rating Table | |
TA | Operating Free-Air Temperature Range | 0 to 70 | °C |
Tstg | Storage Temperature Range | -65 to +150 | °C |
TL | Lead Temperature 1.6mm from case for 10 sec | 260 | °C |
The ST75185 contains three drivers and five receivers. The pinout matches the DB9S connector design in order to decrease the part count, reduce the board space required and allow easy interconnection of the UART and serial port connector of IBM PC/ATTMand compatibles. The bipolar circuits and processing of the ST75185 provides a rugged low-cost solution for this function at the expense of quiescent power and external passive components relative to the ST75C185.
The ST75185 complies with the requirements of the EIA/TIA 232-E and ITU (formally CCITT) v.28 standards. These standards are for data interchange between a host computer and peripheral at signalling rates up to 20k-bits/s. The switching speeds of the ST75185 are fast enough to support rates up to 120K-bits/s with lower capacitive loads (shorter cables). Interoperability at the higher signalling rates cannot be assured unless the designer has design control of the cable and the interface circuits at the both ends. For interoperability at signalling rates to 120 K-bits/s, use of EIA/ITA-423-B (ITU v.10) and EIA/ITA-422-B (ITU v.11) standards are recommended.
The ST75185 is characterized for operation over the range of 0oC to70oC.