
Ver: 1.8
May 10, 2006
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G696/G697
Global Mixed-mode Technology Inc.
Microprocessor Reset IC
Features
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
Fully Specified Over Temperature
Available in Three Output Configurations
Push-Pull
RESET Output (G696L)
Push-Pull RESET Output (G696H)
Open-Drain RESET Output (G697L)
Externally Programmable Time Delay Generator
14A 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
Applications
Computers
Controllers
Intelligent Instruments
Critical P and C Power Monitoring
Portable / Battery-Powered Equipment
Automotive
General Description
The G696/G697 are microprocessor (P) supervisory
circuits used to monitor the power supplies in P and
digital systems. They provide excellent circuit reliability
and low cost and adjustments when used with +5V,
+3.3V, +3.0V- powered circuits.
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.
The G697L has an open-drain output stage, while the
G696 have push-pull outputs. The G697L’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G696L
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
CC 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
RESET
(RESET)
VCC
SOT-23-5/TSOT-23-5
G696/G697
5
1
2
NC
4
3
GND
CD
()is for G696H
*G697 ONLY
RESET
INPUT
GND
P
VCC
RESET
(RESET)
GND
G696/G697
VCC
CD
V
CC
C
D
R
pull-up*
RESET
(RESET)
VCC
SOT-23-5/TSOT-23-5
G696/G697
5
1
2
NC
4
3
GND
CD
()is for G696H
*G697 ONLY
RESET
INPUT
GND
P
VCC
RESET
(RESET)
GND
G696/G697
VCC
CD
V
CC
C
D
R
pull-up*