SS8039 SSC [Silicon Standard Corp.], SS8039 Datasheet

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SS8039

Manufacturer Part Number
SS8039
Description
Microprocessor Voltage Monitor with Manual Reset
Manufacturer
SSC [Silicon Standard Corp.]
Datasheet

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(RESET) for SS8039H
Rev.2.02 1/06/2004
Features
Applications
Pin Configuration
Compatible with the popular "811" series
Critical µP and µC power monitoring
Computers
Controllers
Automotive
Precision monitoring of +3V, +3.3V, and +5V
power-supply voltages
Intelligent instruments
Portable / battery-powered equipment
Fully specified over temperature
Available in two output configurations
Manual reset input
Power-on reset pulse width of 140ms min
Supply current of 5µA
Guaranteed reset valid to V
Power supply transient immunity
No external components
4-Pin SOT-143 package
RESET(RESET)
RESET(RESET)
RESET(RESET)
Push-pull RESET output (SS8039H)
Push-pull RESET output (SS8039L)
GND
GND
GND
2
2
2
1
1
1
SS8039
SOT143
CC
= +1V
4
4
4
3
3
3
www.SiliconStandard.com
Microprocessor Voltage Monitor with Manual Reset
V
V
V
MR
MR
MR
CC
CC
CC
Typical Application
V
V
V
CC
CC
CC
General Description
The SS8039 is a microprocessor (µP) supervisory
circuit used to monitor the power supplies in µP and
digital systems. It provides excellent circuit reliability
and low cost by eliminating external components and
adjustments when used with +5V, +3.3V, +3.0V- pow-
ered circuits.
These circuits perform a single function: they assert a
reset signal whenever the V
below a preset threshold, keeping it asserted for at least
140ms after V
Reset thresholds suitable for operation with a variety of
supply voltages are available.
The SS8039 has a push-pull output stage. The
SS8039L has an active-low RESET output, while the
SS8039H has an active-high RESET output. The reset
comparator is designed to ignore fast transients on V
and the outputs are guaranteed to be in the correct logic
state for V
Low supply current makes the SS8039 ideal for use
in portable equipment, and it is available in a 4-pin
SOT-143 package.
MR
MR
MR
SS8039
GND
GND
GND
V
V
V
CC
CC
CC
(RESET)
(RESET)
(RESET)
RESET
RESET
RESET
CC
(RESET) for SS8039H
down to 1V.
CC
has risen above the reset threshold.
RESET
RESET
RESET
INPUT
INPUT
INPUT
CC
supply voltage declines
µP
GND
GND
GND
V
V
V
CC
CC
CC
SS8039
1 of 7
CC
,

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SS8039 Summary of contents

Page 1

... SS8039H has an active-high RESET output. The reset comparator is designed to ignore fast transients on V and the outputs are guaranteed the correct logic state for V down to 1V. CC Low supply current makes the SS8039 ideal for use in portable equipment, and it is available in a 4-pin SOT-143 package. Typical Application V V ...

Page 2

... Options are released to production as needed. Please check with Silicon Standard for availability. SS8039X XXX TC XX Reset active-low (L) or active-high (H) Example: SS8039H263TCTR SS8039 with push-pull active-high reset output at 2.63V in SOT-143 package supplied on tape and reel Absolute Maximum Ratings Terminal voltages with respect to GND V .… ...

Page 3

... SS8039H) RESET Output Current High (push-pull active high, SS8039H) Note 1: Production testing done at T Note 2: RESET output is for SS8039L; RESET output is for SS8039H. Note 3: “Glitches” of 100ns or less typically will not generate a reset pulse. Selection Guide and Part Marking PART/SUFFIX ...

Page 4

... Typical Operating Characteristics (V = full range -40°C to +105°C, unless otherwise noted. Typical values are 463/438/400 versions 3.3V for 308/293 versions, and V CC Supply Current vs.Temperature (No Load) 20 SS8039x463/438/400 SS8039x308/293/263, V =3.3V CC SS8039x463/438/400/308/293/263 -40 - Temperature (°C) Power-up Reset Timeout vs ...

Page 5

... V has risen above the reset threshold. CC The SS8039L/ SS8039H have a push-pull output stage. The manual reset input (MR) can also initiate a reset. See the Manual Reset Input Section. Manual Reset Input Many µP-based products require manual reset capability allowing the operator, a test technician, or external logic circuitry to initiate a reset ...

Page 6

... CC Figure1 shows typical transient durations, vs. the reset comparator overdrive, for which both the SS8039H and SS8039L do not generate a reset pulse. The graph was generated using a negative-going pulse applied to V starting 0.5V above the actual reset threshold and ending below it by the magnitude indicated (reset comparator overdrive) ...

Page 7

... Package Orientation SOT 143 Package MAX. MIN. 1.20 0.037 0.10 0.002 1.10 0.035 0.46 0.145 0.89 0.030 0.18 0.004 3.04 0.110 1.40 0.047 2.50 0.091 www.SiliconStandard.com SS8039 Feed Direction Feed Direction DIMENSION IN INCHS MAX. 0.047 0.004 0.043 0.018 0.035 0.007 0.120 0.055 0.098 0.75 BSC. 0.078 BSC. 0.27 REF ...

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