ST75185CPR

Drivers, Receivers, Transceivers Overview

The ST75185CPR is a full-duplex RS-232 transceiver manufactured by STMicroelectronics, housed in a 20-pin SSOP package. It integrates three drivers and five receivers to facilitate serial communication. The device operates within a supply voltage range of 4.5V to 5.5V for the logic section (VCC) and supports driver/receiver supplies from 7.5V to 15V (VDD/VSS). It complies with EIA/TIA-232-E standards and supports data rates up to 120Kbps under low capacitive loads. The component functions reliably across an operating temperature range of 0°C to 70°C.

Drivers, Receivers, Transceivers Feature Summary

• Pinout compatibility with DB9S connector designs for simplified UART interconnection
• Bipolar circuit processing providing rugged performance at reduced cost
• Supports signaling rates up to 120Kbps with lower capacitive loads

Drivers, Receivers, Transceivers Applications

• Interfacing UARTs with serial port connectors on IBM PC/AT and compatible systems
• Host computer to peripheral data interchange applications
• Serial communication interfaces requiring multiple driver and receiver channels

Drivers, Receivers, Transceivers Procurement Notes

Verify the ordering code suffix 'P' corresponds to the SSOP-20 tape and reel packaging configuration containing 1350 parts per reel. Confirm that the specific revision matches the December 2002 datasheet specifications regarding electrical characteristics and mechanical dimensions before finalizing procurement orders.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a pinout-compatible solution for IBM PC/AT serial ports is required. Consider the trade-off between quiescent power consumption and external passive component count compared to CMOS alternatives like the ST75C185. Ensure design control over cable capacitance if utilizing data rates near the 120Kbps maximum limit.

Drivers, Receivers, Transceivers Part Context

The ST75185CPR belongs to the ST75185 family of multi-driver and receiver RS-232 transceivers. This family includes variants such as the CTR (TSSOP), CD (SO-20 tube), and CDR (SO-20 tape & reel). All variants share identical electrical functionality but differ in physical package type and shipping quantity configurations.

Drivers, Receivers, Transceivers Replacement Considerations

The ST75C185 is documented as a pinout-compatible alternative within the same product family. Designers should account for differences in quiescent power consumption and the requirement for external passive components when substituting between these bipolar and CMOS versions.