Reset IC. GSR803 Datasheet
The GSR803 are microprocessor (μP) supervisory
circuits used to monitor the power supplies in μP
and digital systems. They provide excellent circuit
reliability and low cost by eliminating external
components and adjustments when used with
+3.3V, +3.0V, or 2.5V powered circuits.
These circuits perform a single function: they
assert a reset signal whenever the VCC supply
voltage declines below a preset threshold, keeping
it asserted for at least 140ms after VCC has risen
above the reset threshold. Reset thresholds
suitable for operation with a variety of supply
voltages are available.
The GSR803 have open drain outputs and have an
active low /RESET output. The reset comparator is
designed to ignore fast transients on VCC, and the
outputs are guaranteed to be in the correct logic
state for VCC down to 1V.
Low supply current makes the GSR803 ideal for
use in portable equipment. The ICs are available in
Precision supply-voltage monitor
- 4.63V (GSR803L)
- 4.38V (GSR803M)
- 4.00V (GSR803J)
- 3.08V (GSR803T)
- 2.93V (GSR803S)
- 2.63V (GSR803R)
- 2.32V (GSR803Z)
140ms(min) reset pulse width
Push-Pull /RESET Output Configurations for
12μA Supply Current
Guaranteed Reset(/Reset) Valid to VCC=+1.0V
Power Supply Transient Immunity
No External Components
RoHS Compliant, 100%Pb & Halogen Free
Microprocessor reset circuitry
Embedded Control Systems
Packages & Pin Assignments
Supply Voltage. Reset is asserted when VCC drops below the Reset Threshold Voltage
(VRST). Reset remains asserted until VCC rises above VRST and keep asserted for the
duration of the Reset Timeout Period (tRS) once VCC rises above VRST.
Active-Low Reset Output (Open Drain). It goes low when VCC is below the reset
threshold. It remains low for about 240ms after VCC rises above the reset threshold
(VRST), it needs external pull up resistor.
Voltage Code : As following Table :
Note: Year and Work Week must use the actual time of molding process.