ST7540. Component family: Communication circuit. Configuration: surface-mounted component (SMD). Housing (JEDEC standard): -. Housing: HTSSOP28. Max temperature: +85°C.. Number of circuits: 1. Number of terminals: 28. RoHS: yes. Type of circuits: Power-line FSK transmitter/receiver. [V]: +5.25V/13.5V. Original product from manufacturer: Stmicroelectronics. Quantity in stock updated on 11/02/2025, 20:45