GS6332 Datasheet, PDF (1/6 Pages) Vishay Siliconix – 3 Pin, Low-Power, P Reset Circuits

GS6332 and GS6333
Vishay
formerly General Semiconductor
3 Pin, Low-Power, µP Reset Circuits
Pin Configuration
SOT-23 (Top View)
GND 1
Reset/
Reset
2
3 Vcc
Fig. 1 – Typical Application Diagram
V_CC
V_CC
GS6332
GS6333
RESET
(RESET)
GND
V_CC
µP
RESET
INPUT
GND
Applications
• Computers
• Critical µP/µC power monitoring
• Battery powered equipment
• Automotive electronics
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 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 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 is guaranteed valid, down to Vcc = 1.0V.
• Low supply current of 3µA makes these devices well suit-
ed for battery powered applications. They are designed
to reject fast transients from causing false resets.
• Both devices are available in a space-saving SOT-23
package.
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
Document Number 74810
22-May-02
www.vishay.com
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