TS3809 Datasheet, PDF (1/7 Pages) Taiwan Semiconductor Company, Ltd – Microprocessor Reset Circuit

TS3809/3810 Series
Microprocessor Reset Circuit
SOT-23
Pin Definition:
TS3809
TS3810
1. GND
1. GND
2. RESET 2. (RESET)
3. VCC
3. VCC
General Description
The TS3809/3810 series are used for microprocessor (µP) supervisory circuits 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 +5V, +3.3V, +3.0V, +2.5V powered circuits.
These circuits perform a single function: they assert a reset signal whenever the V_CC supply voltage declines below a
preset threshold, keeping it asserted for at least 200ms after V_CC has risen above the reset threshold. Reset
thresholds suitable for operation with a variety of supply voltages are available. TS3809/3810 series have push pull
outputs. TS3809 series have an active low RESET output, while the TS3810 has an active high RESET output The
reset comparator is designed to ignore fast transients on V_CC, and the outputs are guaranteed to be in the correct
logic state for V_CC down to 1.0V. Low supply current makes TS3809/3810 series ideal for use in portable equipment.
Features
● High Accurate: ±2%
● Precision monitoring of +3V, +3.3V and +5V Power
supply voltage
● Fully specified over temperature
● Available in three output configurations
● Push-Pull RESET low output (TS3809)
● Push-Pull (RESET) high output (TS3810)
● 200mS typ. Power-on reset pulse width
● 25µS supply current
● Guaranteed reset valid to Vcc=+1V
● Power supply transient immunity
Ordering Information
Part No.
Package
Packing
TS3809CXx RF
SOT-23
3Kpcs / 7” Reel
TS3810CXx RF
SOT-23
3Kpcs / 7” Reel
Note: x is the threshold voltage type, option as:
A : 4.63V B : 4.38V C : 4.00V D : 3.08V
E : 2.93V F : 2.63V G : 2.25V
Typical Application Circuit
Applications
● Battery-operated systems and Controllers
● Intelligent instruments
● Critical uP and uC power monitoring
● Portable / Battery powered equipment
● Automotive
Absolute Maximum Rating
Parameter
Terminal Voltage (with respect to Gnd)
RESET & (RESET) push-pull
Input Current, V_CC
Output Current, RESET, (RESET)
Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260^oC)
Symbol
V_CC
V_RESET
I_CC
I_O
P_D
T_J.OPR
T_STG
T_LEAD
Maximum
GND - 0.3 to GND +6.5
GND - 0.3 to V_CC +0.3
20
5
(T_J-T_A)/θ_JA
-40 ~ +125
-65 ~ +150
10
Unit
V
V
mA
mA
mW
o_C
o_C
S
1/7
Version: C07