IMP708CSA Datasheet | IMP Inc

feature 60 percent lower maximum supply current. The family offers several functional options. Each device generates a reset signal during power-up, power-down and during brownout conditions. A reset is generated when the supply drops below 4.65V (IMP705/707/813L) or 4.40V (IMP706/708). For 3V power supply applications, refer to the IMP705P/R/S/T data sheet. In addition, the IMP705/706/813L feature a 1.6 second watchdog timer. The IMP707/708 have both active-HIGH and active-LOW reset outputs but no watchdog function. The IMP813L has the same pin-out and functions as the IMP705 but has an active-HIGH reset output. A versatile power-fail circuit has a 1.25V threshold, useful in checking battery levels and non-5V supplies. All devices have a manual reset (MR) input. The watchdog timer output will trigger a reset if connected to MR. All devices are available in 8-pin DIP, SO and Micro SO packages. Key Features N Improved replacements for the Maxim MAX705/6/7/8, MAX813L - 140µA maximum supply current - 60% improvement N Precision power supply monitor - 4.65V threshold (IMP705/707/813L) - 4.40V threshold (IMP706/8) N Debounced manual reset input N Voltage monitor - 1.25V threshold - Battery monitor/Auxiliary supply monitor N Watchdog timer (IMP705/706/813L) N 200ms reset pulse width N Active HIGH reset output (IMP707/708/813L) N Micro SO package Applications N N N N N puters and embedded controllers Battery-operated systems Intelligent instruments Wireless munication systems PDAs and handheld equipment Block Diagrams Transition Detector Watchdog Timer WDO RESET 0.25m A Timebase 0.25m A MR VCC + + - RESET Generator RESET (RESET) (IMP813L) MR VCC + + - 4.65V (IMP707) 4.40V (IMP708) RESET Generator RESET 4.65V (IMP705/813L) 4.40V (IMP706) + IMP705 IMP706 IMP813L 1.25V - PFO 1.25V + PFO - IMP707...