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Part: GS810C21EUA
Category:
Description:
Company: Vishay Intertechnology
Datasheet: Download GS810C21EUA datasheet File size : 181 kB
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GS809C and GS810C
New Product
Vishay
formerly General Semiconductor
Microprocessor Reset Monitors
Pin Configuration SOT-23 (Top View)
GND 1 3 Reset Output 2 Vcc
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 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 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 is guaranteed valid, down to Vcc = 1.0V.
Fig. 1 Typical Application Diagram
VCC VCC GS809C Reset VCC Processor Reset Input GND
· Low supply current of 3µA makes these devices well suited 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.
GND
Applications
· Computers · Battery Powered Equipment · Critical uProcessor and uController power supply monitoring
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
Document Number 74808 01-Nov-02
www.vishay.com 1
GS809C and GS810C
Vishay
formerly General Semiconductor
Ordering Information
Reset Active Low GS809CxxEUx GS810CxxEUx Reset Active High
Reset Timeout Period Default: 210mS E : 150mS D: 30mS A : 1.5mS Reset Voltage Options L M J T S 27 R 24 21 Vth = 4.63V Vth = 4.38V Vth = 4.0V Vth = 3.08V Vth = 2.93V Vth = 2.7V Vth = 2.63V Vth = 2.4V Vth = 2.1V
Marking Information
X XX XX Date Code Year -- Week
Threshold Voltage 26: 2.63V 38: 3.8V 46: 4.63V Etc. No letters
A: D: E: G:
GS809C, 1.5mS GS809C, 30.0mS GS809C, 150.0mS GS809C, 210.0mS
L: Q: R: S:
GS810C, 1.5mS GS810C, 30.0mS GS810C, 150.0mS GS810C, 210.0mS
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Document Number 74808 01-Nov-02
GS809C and GS810C
Vishay
formerly General Semiconductor
Absolute Maximum Ratings (1)
Parameter Supply Voltage Reset/Reset Input Current, Vcc Output Current, Reset/Reset dV/dT (Vcc) Operating Temperature Range Storage Temperature Range Power Dissipation (TA 70°C) SOT-23 (Derate 4mW/°C above 70°C) TA Tstg PD Symbol Vcc Value 6.0 0.3 to (Vcc + 0.3) 20 20 100 40 to +85 65 to +150 260 Unit V V mA mA V/µS °C °C mW
Note: (1) Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.
Electrical Characteristics
Parameter Vcc Range
TA = 25°C unless otherwise noted.
Symbol VRANGE
Test Conditions
Min 1
Typ VTHNOM VTHNOM 0.4
Max 5.5 5.5 3.0 5.0 VTHNOM+1.5% VTHNOM+2.0%
Unit V µA
TA = 40 to +85°C Supply Current ICC Vcc = 3.0V Vcc=3.0V, TA= 40 to +85°C Reset Threshold Threshold Hysteresis Reset Threshold Temperature Coefficient Reset Output Voltage Low 809C/ 810C 809C Vcc VTH max TA = 40 to +85°C ISINK = 1.2mA 809C Vcc > VTH max 810C Vcc < VTH min TA = 40 to +85°C ISOURCE = 0.5mA VCC = VTH 100mV TA = 40 to +85°C TA = 40 to +85°C VTH TA = 40 to +85°C VTH HIST
1 VTHNOM1.5% VTHNOM2.0%
V %VTH
30
ppm/ °C
VOL
0.5
V
Reset Output Voltage High 809C/ 810C
VOH
0.8VCC
V
VCC to Reset Delay Reset Timeout Period
TD1 TD2
TD2NOM35%
40 TD2NOM
TD2NOM+35%
µS mS
Document Number 74808 01-Nov-02
www.vishay.com 3
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