Global Mixed-mode Technology Inc.
G696/G697
Microprocessor Reset IC
Features
General Description
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
The G696/G697 are microprocessor (µP) supervisory
circuits used to monitor the power supplies in µP and
digital systems. They provide excellent circuit reliability
and low cost and adjustments when used with +5V,
+3.3V, +3.0V- powered circuits.
Fully Specified Over Temperature
Available in Three Output Configurations
Push-Pull RESET Output (G696L)
Push-Pull RESET Output (G696H)
These circuits perform a single function: they assert a
reset signal whenever the VCC supply voltage declines
below a preset threshold, with hysteresis keeping it
asserted for time delay determined by externally pro-
grammable time delay generator after VCC has risen
above the reset threshold. Reset thresholds suitable
for operation with a variety of supply voltages are
available.
Open-Drain RESET Output (G697L)
Externally Programmable Time Delay Generator
14µA Supply Current
Guaranteed Reset Valid to VCC = 0.8V
Power Supply Transient Immunity
5 pin SOT-23-5 or TSOT-23-5 Packages
2% Threshold Accuracy
The G697L has an open-drain output stage, while the
G696 have push-pull outputs. The G697L’s open-drain
Applications
Computers
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G696L
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive
have an active-low RESET output, while the G696H
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 0.8V.
Low supply current makes the G696/G697 ideal for
use in portable equipment. The G696/G697 are avail-
able in 5-pin SOT23-5 or TSOT-23-5 packages.
Pin Configuration
Typical Application Circuit
VCC
RESET
(RESET)
1
CD
5
4
VCC
VCC
Rpull-up*
G696/G697
G696/G697
VCC
GND
2
3
µP
RESET
INPUT
RESET
(RESET)
CD
NC
GND
GND
CD
SOT-23-5/TSOT-23-5
()is for G696H
*G697 ONLY
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.8
May 10, 2006
1
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
