商品描述: The TPS3803 and TPS3805 families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSPs and processor-based systems.; The TPS3803G15 device has a fixed-sense threshold voltage V; set by an internal voltage divider, whereas the TPS3803-01 has an adjustable SENSE input that can be configured by two external resistors. In addition to the fixed sense threshold monitored at V; , the TPS3805 devices provide a second adjustable SENSE input.; is asserted in case any of the two voltages drops below V; .; During power on,; is asserted when supply voltage V; becomes higher than 0.8 V. Thereafter, the supervisory circuit monitors V; (and/or SENSE) and keeps; active as long as V; or SENSE remains below the threshold voltage V; . As soon as V; (SENSE) rises above the threshold voltage V; ,; is deasserted again. The product spectrum is designed for 1.5 V, 3.3 V, and adjustable supply voltages. The devices are available in a 5-pin SC-70 package.; The TPS3803 and TPS3805 devices are characterized for operation over a temperature range of -40°C to +85°C. The TPS3803 and TPS3805 families of supervisory circuits provide circuit initialization and timing supervision, primarily for DSPs and processor-based systems.; The TPS3803G15 device has a fixed-sense threshold voltage V; set by an internal voltage divider, whereas the TPS3803-01 has an adjustable SENSE input that can be configured by two external resistors. In addition to the fixed sense threshold monitored at V; , the TPS3805 devices provide a second adjustable SENSE input.; is asserted in case any of the two voltages drops below V; .; During power on,; is asserted when supply voltage V; becomes higher than 0.8 V. Thereafter, the supervisory circuit monitors V; (and/or SENSE) and keeps; active as long as V; or SENSE remains below the threshold voltage V; . As soon as V; (SENSE) rises above the threshold voltage V; ,; is deasserted again. The product spectrum is designed for 1.5 V, 3.3 V, and adjustable supply voltages. The devices are available in a 5-pin SC-70 package.; The TPS3803 and TPS3805 devices are characterized for operation over a temperature range of -40°C to +85°C.