GS809C

Features:

• Tight reset voltage tolerances ± 1.5%
• 4 reset active timeout period options
• Low quiescent current: < 3µA
• 9 reset threshold options from 2.1V to 4.63V
• Reset output guaranteed down to 1.0V
• No external components
• Vcc Transient immunity
• Wide temperature range 40°C to +85°C


Application

• Computers
• Battery Powered Equipment
• Critical uProcessor and uController power supply monitoring


Pinout




Specifications

Parameter	Symbol	Value	Unit
Supply Voltage	Vcc	6.0	V
Reset/ Reset		0.3 to (Vcc + 0.3)	V
Input Current, Vcc		20	mA
Output Current, Reset/Reset		20	mA
dV/dT (Vcc)		100	V/µS
Operating Temperature Range	TA	40 to +125	°C
Storage Temperature Range	Tstg	65 to +150	°C
Power Dissipation (TA 70°C) SOT-23 (Derate 4mW/°C above 70°C)	PD	260	mW

Description

The GS809C and 810C are system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required.

When the processor power supply voltage drops below the reset threshold, the reset output of GS809C and 810C are driven active, in less than 40µs (TD1). Reset is maintained active for a time period (TD2), after the Vcc rises above the threshold voltage.

To prevent jitter, the reset threshold voltage of GS809C and 810C have a built-in hysteresis of 0.4% of VTH.

The GS809C has an active-low reset output, while the GS810C has an active-high reset output. Both devices have push/pull output drives.

The reset signal of GS809C and 810C are guaranteed valid, down to Vcc = 1.0V.

Low supply current of 3µA makes GS809C and 810C well suited for battery powered applications. They are designed to reject fast transients from causing false resets.

GS809C and 810C are available in a space-saving SOT-23 package.