Designed for 2-way network communication over power lines, half-duplex Binary-FSK Model ST7540 features 8 selectable carrier frequencies, covering bands A, B, and C, and 4 programmable baud rates from 600-4,800 bps. Device integrates single-ended Power Amplifier with accessible I/O lines for external signal components. In addition to 5 V regulator, transceiver includes on-chip 3.3 V, 50 mA voltage regulator for powering different types of external microcontrollers.

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New power amplifier combined with 'stripped down' key features from the state-of-the-art ST7538 to create a smaller, cost-effective power line transceiver

Geneva, March 21, 2006 - STMicroelectronics (NYSE: STM) today announced a new power line transceiver, the ST7540 http://www.st.com/stonline/products/literature/ds/12176.htm, strengthening ST's leadership in Narrowband Power Line Communications by broadening the company's current offering to include space constrained and cost-sensitive home and building automation applications and remote monitoring systems.

The ST7540 is a half duplex Binary-FSK (Frequency Shift Keying) transceiver designed for two-way network communication over power lines, with eight selectable carrier frequencies, covering CENELEC bands A, B and C, and 4 programmable baud rates from 600 to 4800 bps. Reduced in size and pin count, the new ST7540 maintains the field proven 'core' technology of the earlier ST7538, but without some accessory functions (such as zero crossing detection and the uncommitted operational amplifier).