TS809_1 Datasheet, PDF (1/7 Pages) Taiwan Semiconductor Company, Ltd – Microprocessor Reset Circuit

TS809/810/809R/810R Series
Microprocessor Reset Circuit
SOT-23
Pin Definition:
TS809/TS810
1. Ground
2. RESET(RESET)
3. Vcc
TS809R/TS810R
1. RESET(RESET)
2. Ground
3. Vcc
General Description
The TS809/810 series 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 TS809/810 series have push pull outputs. The TS809/809R have an active low RESET
output, while the TS810/810R 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 TS809/810 series ideal for use in portable equipment.
Features
● Highly 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 (TS809/TS809R)
● Push-Pull (RESET) high output (TS810/TS810R)
● 140mS min. power-on reset pulse width
● 12uA supply current
● Guaranteed reset valid to Vcc = +1V
● Power supply transient immunity
● No external components
Applications
● Battery-operated systems
● Controllers
● Intelligent instruments
● Critical uP and uC power monitoring
● Portable / Battery powered equipment
● Automotive
Pin Descriptions
Ordering Information
Part No.
Package
Packing
TS809CXx RF
SOT-23
3Kpcs / 7” Reel
TS810CXx RF
SOT-23
3Kpcs / 7” Reel
TS809RCXx RF
SOT-23
3Kpcs / 7” Reel
TS810RCXx 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 : 2.32V H : 2.1V
I : 2.0V
Application Circuit
Name
Gnd
RESET
(RESET)
Vcc
Description
Ground
RESET – TS809 / TS809R (Active Low)
(RESET) – TS810 / TS810R (Active High)
Operating voltage input
1/7
Version: A07