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SS8037L438GT72 参数 Datasheet PDF下载

SS8037L438GT72图片预览
型号: SS8037L438GT72
PDF下载: 下载PDF文件 查看货源
内容描述: 微处理器复位IC [Microprocessor Reset IC]
分类和应用: 微处理器
文件页数/大小: 9 页 / 302 K
品牌: SSC [ SILICON STANDARD CORP. ]
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SS8037/8(G)
Microprocessor Reset IC
FEATURES
Precision monitoring of +3V, +3.3V, and +5V
power-supply voltages
DESCRIPTION
The SS8037/8 are microprocessor (µP) supervisory
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
CC
supply voltage declines
below a preset threshold, keeping it asserted for at least
140ms after V
CC
has risen above the reset threshold.
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
CC
. The
SS8037L has an active-low
RESET
output, while the
SS8037H has an active-high RESET output. The reset
comparator is designed to ignore fast transients on V
CC
,
and the outputs are guaranteed to be in the correct logic
state for V
CC
down to 1V.
Low supply current makes the SS8037/8 ideal for use
in portable equipment. They are available in a 3-pin
SOT23-3 package.
Fully specified over temperature
Available in three output configurations
Push-pull
RESET
output (SS8037L)
Push-pull RESET output (SS8037H)
Open-drain
RESET
output (SS8038L)
Power-on reset pulse width of 140ms min
Supply current of 10µA
Guaranteed reset valid to V
CC
= +1V
Power supply transient immunity
No external components
SOT23-3 package
APPLICATIONS
Computers
Controllers
Intelligent instruments
Critical µP and µC power monitoring
Portable / battery-powered equipment
Automotive
This device is supplied with Pb-free lead finish (second-level interconnect).
PIN CONFIGURATION
3
V
CC
TYPICAL APPLICATION
V
CC
V
CC
*
R
PULL-UP
SS8037/8
1
2
RESET
(RESET)
GND
µP
RESET
INPUT
GND
SOT23-3
*SS8038 ONLY
10/6/2004 Rev.2.20
www.SiliconStandard.com
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