TS803 Datasheet, PDF (1/6 Pages) Taiwan Semiconductor Company, Ltd – Microprocessor Reset Circuit

TS803
Microprocessor Reset Circuit
SOT-23
Pin Definition:
TS803
TS803R
1. Ground 1. Reset
2. Reset 2. Ground
3. Vcc
3. Vcc
General Description
The TS803/TS803R are microprocessor (µP) supervisory circuit 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 +5V, +3.3V, +3.0V 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 TS803/TS803R are open –drain outputs. The TS803/TS803R have an active low RESET
output, while the TS803/TS803R has an active high RESET output. The reset comparator is designed to ignore fast
transients on VCC, and the output guaranteed to be in the correct logic state for VCC down to 1V. Low supply correct
makes the TS803/TS803R ideal for use in portable equipment.
Features
● Precision monitoring of +3V, +3.3V & +5V power
supply voltage
● Fully specified over temperature
● Available in three output configurations
● Open-Drain RESET low output
● 3uA supply current
● Guaranteed reset valid to Vcc = +1V
● Power supply transient immunity
● No external components
Applications
● Computers
● Controllers
● Intelligent Instruments
● Critical uP and uC power monitoring
● Portable / Battery Power Equipment
● Automotive
Ordering Information
Part No.
Package
Packing
TS803CXx RF
SOT-23
3Kpcs / 7” Reel
TS803RCXx RF
SOT-23
3Kpcs / 7” Reel
Note: x is the threshold voltage type, option as
TS803 Threshold Voltage
A : 4.63V B : 4.38V
E : 2.93V F : 2.63V
I : 2.0V J : 1.8V
C : 4.00V
G : 2.32V
K :1.6V
D : 3.08V
H : 2.1V
TS803R Threshold Voltage
B : 4.20V E : 2.93V F : 2.70V
Contact factory for additional voltage options.
Absolute Maximum Rating
Parameter
Symbol
Value
Unit
Supply Voltage
V_CC
7
V
RESET & (RESET) Open Drain
Input Current, V_CC
V_RESET
- 0.3 ~ (V_CC +0.3)
V
I_CC
20
mA
Output Current, RESET
I_O
20
mA
Rate of Rise, V_CC
V_R
100
ESD Classification
B
Note: Stress above the listed absolute maximum rating may cause permanent damage to the device
HBM B: 2000V~3999V
V/uS
1/6
Version: A07