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G692 Datasheet, PDF (1/7 Pages) List of Unclassifed Manufacturers – 4-Pin UP Voltage Monitors with Manual Reset Input | |||
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Global Mixed-mode Technology Inc.
G692/G693
4-Pin µP Voltage Monitors with Manual Reset Input
Features
ÂPrecision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
ÂFully Specified Over Temperature
ÂAvailable in Three Output Configurations
Push-Pull RESET Output (G692L)
Push-Pull RESET Output (G692H)
Open-Drain RESET Output (G693L)
Â140ms min Power-On Reset Pulse Width
Â5µA Supply Current
ÂGuaranteed Reset Valid to VCC = +1V
ÂPower Supply Transient Immunity
ÂNo External Components
ÂManual Reset Input
Â4-Pin SOT143 Package
Applications
ÂComputers
ÂControllers
ÂIntelligent Instruments
ÂCritical µP and µC Power Monitoring
ÂPortable / Battery-Powered Equipment
ÂAutomotive
Pin Configuration
General Description
The G692/G693 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. The G692/G693 also provide a de-
bounced manual reset input.
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 G693L has an open-drain output stage, while the
G692 have push-pull outputs. The G693Lâs open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G692L
have an active-low RESET output, while the G692H
has an active-high RESET output. The reset com-
parator is designed to ignore fast transients on VCC,
and the outputs are guaranteed to be in the correct
logic state for VCC down to 1V.
Low supply current makes the G692/G693 ideal for
use in portable equipment. The G692/G693 are avail-
able in a 4-pin SOT143 packages.
Ordering Information
PART TEMP. RANGE PIN-PACKAGE
G692H(L)xxxTC -40°C ~ +105°C
SOT143
G693LxxxTC -40°C ~ +105°C
SOT143
* xxx specifies the threshold voltage.
e.g. 263 denotes the 2.63V threshold voltage.
Typical Operating Circuit
GND 1
4 VCC
G692/G693
RESET(RESET) 2
()is for G692H
SOT143
3 MR
VCC
VCC
G692/G693
MR
RESET
(RESET)
GND
VCC
* RPULL-UP
µP
RESET
INPUT
GND
*G693 ONLY
Ver: 1.0
Sep 23, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
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