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  Taiwan Semiconductor (TSMC) Electronic Components Datasheet  

TS809 Datasheet

Microprocessor Reset Circuit

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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


  Taiwan Semiconductor (TSMC) Electronic Components Datasheet  

TS809 Datasheet

Microprocessor Reset Circuit

No Preview Available !

TS809/810/809R/810R Series
Microprocessor Reset Circuit
Absolute Maximum Rating
Parameter
Symbol
Terminal Voltage (with respect to Gnd)
RESET & (RESET) push-pull
Input Current, VCC
Output Current, RESET, (RESET)
Rate of Rise, VCC
Continuous Power Dissipation
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature (260oC)
VCC
VRESET
ICC
IO
VR
PD
TOPR
TSTG
TLEAD
Electrical Specifications (Ta = 25oC, unless otherwise noted)
Parameter
Input Supply Voltage
Supply Current
Conditions
Ta=-40oC~+85oC
VIN=VIN *1.10
VIN=VIN *1.10, Ta=-40oC~+85oC
TS809/809R/810/810RCXA
Symbol
VCC
ICC
TS809/809R/810/810RCXB
TS809/809R/810/810RCXC
TS809/809R/810/810RCXD
Reset Threshold
TS809/809R/810/810RCXE
TS809/809R/810/810RCXF
VTH
TS809/809R/810/810RCXG
TS809CXH
TS809CXI
Reset Threshold
Temperature Coefficient
VCC to Reset Delay
VCC = VTH - 100mV
Reset Active Timeout Period Ta=-40oC~+85oC
TDELAY
RESET Output (TS809/R)
Voltage Low
VCC < VTH(MAX), ISINK =1.2mA
VOL
RESET Output (TS809/R)
Voltage High
(RESET) Output (TS810/R)
Voltage Low
VCC > VTH(MAX), ISOURCE =0.5mA,
VCC > 1.8V
VCC > VTH(MAX), ISOURCE =0.15mA,
1.8V VCC >1.0V
VCC > VTH(MAX), ISINK =1.2mA
VOH
VOL
(RESET) Output (TS810/R)
Voltage High
VCC < VTH(MAX), ISOURCE =0.5mA,
VCC > 1.8V
VCC > VTH(MAX), ISOURCE =0.15mA,
1.8V VCC >1.0V
VOH
Maximum
7
- 0.3 ~ (VCC +0.3)
20
20
100
320
-40 ~ +125
-65 ~ +150
10
Unit
V
V
mA
mA
V/uS
mW
oC
oC
S
Min Typ Max Unit
1.0 -- 5.5 V
--
-
--
--
3.0
5.0
uA
4.56 4.63
4.7
4.31 4.38 4.45
3.94 4.00 4.06
3.03 3.08 3.13
2.89 2.93 2.97
V
2.59 2.63 2.67
2.28 2.32 2.35
2.07 2.1 2.13
1.97 2.0 2.03
30
50
160
ppm/
oC
-- 40 -- uS
140 210 500 mS
-- -- 0.2 V
0.8
VCC
--
--
V
-- -- 0.2 V
0.8
VCC
--
--
V
2/7 Version: A07


Part Number TS809
Description Microprocessor Reset Circuit
Maker Taiwan Semiconductor
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TS809 Datasheet PDF





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