ST4E1240DT

ST4E1240DT from STMicroelectronics is an active half-duplex transceiver for RS-485 serial interfaces. It integrates 1/1 driver/receiver channels, supports data rates up to 40Mbps, and operates from 3V ~ 5.5V.

Selection profile: Its half-duplex architecture shares the bus pair between transmit and receive operation, so direction-control timing should be checked in the final design. The verified interface scope is RS-485. The 40Mbps data-rate rating, 3V ~ 5.5V supply range, and -40°C ~ 85°C (TA) operating range distinguish this orderable part in the catalog.

Package and ordering: ST4E1240DT is supplied in SOIC-8; the source package designation is 8-SOIC, with Tape & Reel (TR) Cut Tape (CT) Digi-Reel® packaging options listed for this orderable part. Confirm reel, tube, tray, or cut-tape requirements against the full manufacturer ordering code before purchase.

Use the linked datasheet to verify pinout, protection features, timing limits, termination requirements, and application-specific conditions. Availability, lead time, and order quantity require RFQ confirmation.