SS8037 SSC [Silicon Standard Corp.], SS8037 Datasheet

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SS8037

Manufacturer Part Number
SS8037
Description
Microprocessor Reset IC
Manufacturer
SSC [Silicon Standard Corp.]
Datasheet

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10/6/2004 Rev.2.20
FEATURES
APPLICATIONS
PIN CONFIGURATION
Supply current of 10µA
Guaranteed reset valid to V
Power supply transient immunity
No external components
SOT23-3 package
Controllers
Power-on reset pulse width of 140ms min
Critical µP and µC power monitoring
Portable / battery-powered equipment
Automotive
This device is supplied with Pb-free lead finish (second-level interconnect).
Available in three output configurations
Computers
Intelligent instruments
Precision monitoring of +3V, +3.3V, and +5V
power-supply voltages
Fully specified over temperature
Open-drain RESET output (SS8038L)
Push-pull RESET output (SS8037L)
Push-pull RESET output (SS8037H)
1
SOT23-3
3
2
CC
= +1V
www.SiliconStandard.com
V
CC
DESCRIPTION
circuits 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- 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 SS8038L has an open-drain output stage, while the
SS8037H/L have push-pull outputs. The SS8038L’s
open-drain RESET output requires a pull-up resistor
that can be connected to a voltage higher than V
SS8037L has an active-low
SS8037H 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 SS8037/8 ideal for use
in portable equipment. They are available in a 3-pin
SOT23-3 package.
TYPICAL APPLICATION
SS8037/8
The SS8037/8 are microprocessor (µP) supervisory
Microprocessor Reset IC
* SS8038 ONLY
GND
GND
V
V
CC
CC
(RESET)
(RESET)
RESET
RESET
CC
down to 1V.
CC
has risen above the reset threshold.
R
PULL - UP
*
RESET
RESET
INPUT
INPUT
CC
RESET output, while the
supply voltage declines
µ P
µ P
GND
GND
V
V
CC
CC
SS8037/8(G)
CC
. The
1 of 9
CC
,

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SS8037 Summary of contents

Page 1

... SS8037H 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 SS8037/8 ideal for use in portable equipment. They are available in a 3-pin SOT23-3 package. TYPICAL APPLICATION V CC ...

Page 2

... ORDERING INFORMATION SS803xxxxxGT7x PART NUMBER SS8037L : Push-Pull Active Low Output SS8037H : Push-Pull Active High Output SS8038L : Open-Drain Output SELECTION GUIDE AND MARKING INFORMATION PART/SUFFIX RESET THRESHOLD (V) SS8038L463GT71 SS8038L438GT71 SS8038L400GT71 SS8038L308GT71 SS8038L293GT71 SS8038L263GT71 SS8037H463GT71 SS8037H438GT71 SS8037H400GT71 SS8037H308GT71 SS8037H293GT71 SS8037H263GT71 SS8037L463GT71 SS8037L438GT71 SS8037L400GT71 ...

Page 3

... SS8038L438GT73 SS8038L400GT73 SS8038L308GT73 SS8038L293GT73 SS8038L263GT73 SS8037H463GT73 SS8037H438GT73 SS8037H400GT73 SS8037H308GT73 SS8037H293GT73 SS8037H263GT73 SS8037L463GT73 SS8037L438GT73 SS8037L400GT73 SS8037L308GT73 SS8037L293GT73 SS8037L263GT73 Note: T73: SOT23 pin-out option 3 Not all product options are released for mass production, please contact Silicon Standard for availability. 10/6/2004 Rev.2.20 OUTPUT TYPE 4 ...

Page 4

... +25°C A SS803xx293x T = -40°C to +85° +85°C to +105° +25°C A SS803xx263x T = -40°C to +85° +85°C to +105°C A www.SiliconStandard.com SS8037/8(G) = +70° +25° for A CC MIN TYP MAX UNITS 1.0 5.5 V 1.2 5 µ 4.56 4.63 4.70 4.50 4 ...

Page 5

... RESET Output Current Low (push-pull active high, SS8037H) RESET Output Current High (push-pull active high, SS8037H) RESET Open-Drain Output Leakage Current (SS8038L) Note 1: Production testing done at T Note 2: RESET output is for SS8037L/38L; RESET output is for SS8037H. 10/6/2004 Rev.2.20 (Cont for 263 version.) (Note 1) CC SYMBOL CONDITION ...

Page 6

... Power-down Reset Delay vs. Temperature (803xx463/438/400) 140 = 120 100 V = 10mV 20mV 100mV -40 - www.SiliconStandard.com SS8037/8(G) = +25° for A CC vs. Temperature 803xx463/438/400 Temperature (° 10mV 20mV 100mV ...

Page 7

... Supply Voltage (+5V, +3.3V, +3.0V) CC APPLICATIONS INFORMATION A microprocessor’s (µP’s) reset input starts the µ known state. The SS8037L/H and 8038L assert reset to prevent code-execution errors during power-up, power-down, or brownout conditions. They assert a reset signal whenever the V supply voltage declines below a ...

Page 8

... The SS803xx463/803xx308 use highly accurate circuitry to ensure that reset is asserted close to the 5% limit, and long before the supply has declined to 10% below nomi- nal. www.SiliconStandard.com SS8037/8(G) Output Allows Use with RESET pin. However, some systems may use the CC decreases below 1V, ...

Page 9

... Silicon Standard Corporation or any third parties. 10/6/2004 Rev.2. SOT23 Package Orientation SOT 23 (T7) Package DIMENSIONS IN MILLIMETERS MIN NOM 1.00 1.10 0.00 ----- 0.70 0.80 0.35 0.40 0.10 0.15 2.70 2.90 1.40 1.60 ----- 1.90(TYP) 2.60 2.80 0.37 ------ 1º 5º www.SiliconStandard.com SS8037/8( Feed Direction MAX 1.30 0.10 0.90 0.50 0.25 3.10 1.80 ----- 3.00 ----- 9º ...

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