GS6333

Features:

• Tight reset voltage tolerances ± 1.8%
• Low supply current: < 3µA
• Precision monitoring of 1.8V and 2.5V powersupply voltages
• Other threshold voltage options available from 1.5V to
   2.5V in approximately 100mV increments
• Three reset active time-out period options:typical 1.5mS, 30mS, 150mS
• Reset output guaranteed down to 1.0V
• Vcc transient immunity
• No external components


Application

• Computers
• Critical µP/µC power monitoring
• Battery powered equipment
• Automotive electronics


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 GS6333 and GS6332 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 GS6333 and GS6332 is 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 GS6333 and GS6332 has a built-in hysteresis of 0.4% of VTH.

The GS6333 has an active-low reset output, while the GS6332 has an active-high reset output. Both devices have push/pull output drives.

The reset signal of GS6333 and GS6332 is guaranteed valid, down to Vcc = 1.0V.

Low supply current of 3µA makes GS6333 and GS6332 well suited for battery powered applications. They are designed to reject fast transients from causing false resets.

GS6333 and GS6332 are available in a space-saving SOT-23 package.