EM6354 Datasheet | EM Microelectronic

Description The EM6354 is an ultra-low current reset circuit available in a large variety of configurations and very small packages for maximum flexibility in all end-applications up to 125°C and using power supplies between 1.5V and 5.5V. This circuit monitors the supply voltage of any electronic system, and generates the appropriate reset signal. The threshold defines the minimum allowed voltage which guarantees the good functionality of the system. When VDD rises above VTH, the output remains active for an additional delay time. This allows the system to stabilize before going fully active. This delay time, or reset timeout period, can be adjusted using an external capacitor. The output is guaranteed to be in the correct state for VDD down to 0.8V. There are 11 reset threshold voltages starting as low as 1.31V and up to 4.63V. The EM6354 features three output types: active-low push-pull, active-low opendrain and active-high push-pull. Small SC70 and SOT23 packages as well as ultra-low supply current of 2.9μA make the EM6354 an ideal choice for portable and battery-operated devices. Typical Application VDD RESET CD GND - REXT for open-drain version only - VDD RESET MPU, DSP Pin Configuration (top view) RESET 1 (RESET) VDD 2 GND 3 5 CD 4 NC SOT23-5L Features  Adjustable reset timeout period using an external capacitor  Ultra-low supply current of 2.9μA (VDD=3.3V)  Operating temperature range: -40°C to +125°C  1.5% reset threshold accuracy  11 reset threshold voltages VTH: 4.63V, 4.4V, 3.08V, 2.93V, 2.63V, 2.2V, 1.8V, 1.66V, 1.57V, 1.38V, 1.31V  3 reset output options: Active-low RESET push-pull Active-low RESET open-drain Active-high RESET push-pull  Immune to short negative VDD transients  Guaranteed Reset valid down to 0.8V  Threshold hysteresis: 2.1% of VTH  Very small SOT23-5L package Applications  Home appliances  Modems  Routers, hubs and gateways  WAN, LAN  Handheld GPS  Metering and Instrumentation  TV...