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LTC2908ITS8-A1

Description
Processor Supervisor 4.675V/3.086V/2.338V/1.683V/Adj/Adj 6 Active Low/Open Drain 8-Pin TSOT-23
File Size226KB,18 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC2908ITS8-A1 Overview

Processor Supervisor 4.675V/3.086V/2.338V/1.683V/Adj/Adj 6 Active Low/Open Drain 8-Pin TSOT-23

LTC2908ITS8-A1 Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
Number of Supervisors6
Maximum Reset Active Time (ms)260
Output DriverActive Low/Open Drain
Minimum Reset Threshold Voltage (V)Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.656|2.3|3.036|4.6|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj
Typical Reset Threshold Voltage (V)Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.683|2.338|3.086|4.675|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj
Maximum Reset Threshold Voltage (V)Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.71|2.375|3.135|4.75
Monitored Voltage (V)Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|5|3.3|2.5|1.8|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj
Minimum Operating Supply Voltage (V)0.5
Maximum Operating Supply Voltage (V)6
Power Fail DetectionNo
Watchdog TimerNo
Manual ResetYes
Chip Enable SignalsNo
Battery Backup SwitchingYes
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeIndustrial
TypeVoltage Monitor
Pin Count8
Standard Package NameSOT-23
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed8
Lead ShapeGull-wing
LTC2908
Precision
Six Input Supply Monitor
FEATURES
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DESCRIPTION
The LTC
®
2908 is a six input supply monitor for systems
requiring a precise and compact monitoring solution
for multiple supply voltages. The inputs can be shorted
together for monitoring systems with fewer than six
supply voltages, and the open drain
RST
output of two or
more LTC2908s can be wired-OR together for monitoring
systems with more than six supply voltages. The common
reset output remains low until all six inputs have been in
compliance for 200ms.
The LTC2908 features a tight 1.5% threshold accuracy over
the entire operating temperature range and glitch immunity
to ensure reliable reset operation without false triggering.
The open-drain
RST
output state is guaranteed to be in the
correct state as long as V1 and/or V2 is 0.5V or greater.
The LTC2908 also features adjustable inputs with a nominal
threshold level at 0.5V. This product provides a precise,
space-conscious, micropower and general purpose solu-
tion for any kind of system requiring supply monitors.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. *Patent pending.
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Ultralow Voltage Reset: V
CC
= 0.5V Guaranteed*
Monitors Six Inputs Simultaneously:
5V, 3.3V, 2.5V, 1.8V, ADJ1, ADJ2 (LTC2908-A1)
3.3V, 2.5V, 1.8V, 1.5V, ADJ1, ADJ2 (LTC2908-B1)
2.5V, ADJ1, ADJ2, ADJ3, ADJ4, ADJ5 (LTC2908-C1)
Guaranteed Threshold Accuracy: ±1.5% of
Monitored Voltage Overtemperature
Internal V
CC
Auto Select
Power Supply Glitch Immunity
200ms Reset Time Delay
Active Low Open-Drain
RST
Output
Low Profile (1mm) 8-Lead SOT-23 (ThinSOT™) and
Plastic (3mm
×
2mm) DFN Packages
APPLICATIONS
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Network Servers
Wireless Base Stations
Optical Networking Systems
Multivoltage Systems
Desktop and Notebook Computers
TYPICAL APPLICATION
Six Supply Monitor with 5% Tolerance
(12V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V)
12V
DC/DC
DC/DC
DC/DC
DC/DC
DC/DC
3.3V
RST
Output Voltage vs V1
with 10k Pull-Up Resistor to V1
0.4
V3 = V4 = V
ADJ1
=
V
ADJ2
= V
ADJ3
=
V
ADJ4
= V
ADJ5
= GND
RST
OUTPUT VOLTAGE (V)
2.5V
1.8V
1.5V
1.2V
0.1μF 0.1μF
2.15M
100k
124k
100k
SYSTEM
0.3
V1 INPUT
0.2
V2 = GND
0.1
V2 = V1 (A1/B1)
0
0
0.2
0.4
V1 (V)
0.6
0.8
2908 TA01b
V1
V2 V3 V4
V
ADJ1
LTC2908-B1
GND
V
ADJ2
RST
2908 TA01a
2908fd
1

LTC2908ITS8-A1 Related Products

LTC2908ITS8-A1 LTC2908ITS8-B1 LTC2908CDDB-A1 LTC2908CTS8-A1 LTC2908CTS8-B1 LTC2908IDDB-B1
Description Processor Supervisor 4.675V/3.086V/2.338V/1.683V/Adj/Adj 6 Active Low/Open Drain 8-Pin TSOT-23 Processor Supervisor 3.086V/2.338V/1.683V/1.403V/Adj/Adj 6 Active Low/Open Drain 8-Pin TSOT-23 Processor Supervisor 4.675V/3.086V/2.338V/1.683V/Adj/Adj 6 Active Low/Open Drain 8-Pin DFN EP Processor Supervisor 4.675V/3.086V/2.338V/1.683V/Adj/Adj 6 Active Low/Open Drain 8-Pin TSOT-23 Processor Supervisor 3.086V/2.338V/1.683V/1.403V/Adj/Adj 6 Active Low/Open Drain 8-Pin TSOT-23 Processor Supervisor 3.086V/2.338V/1.683V/1.403V/Adj/Adj 6 Active Low/Open Drain 8-Pin DFN EP
EU restricts the use of certain hazardous substances Not Compliant Not Compliant Not Compliant Not Compliant Not Compliant Not Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Unconfirmed Unconfirmed Unconfirmed LTB Unconfirmed Unconfirmed
SVHC Yes Yes Yes Yes Yes Yes
SVHC Exceeds Threshold Yes Yes Yes Yes Yes Yes
Number of Supervisors 6 6 6 6 6 6
Maximum Reset Active Time (ms) 260 260 260 260 260 260
Output Driver Active Low/Open Drain Active Low/Open Drain Active Low/Open Drain Active Low/Open Drain Active Low/Open Drain Active Low/Open Drain
Minimum Reset Threshold Voltage (V) Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.656|2.3|3.036|4.6|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj 3.036|2.3|1.656|1.38|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj Adj|Adj|Adj|Adj|Adj|Adj|4.6|3.036|2.3|1.656|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.656|2.3|3.036|4.6|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj Adj|Adj|1.38|1.656|2.3|3.036|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj 1.38|1.656|2.3|3.036|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj
Typical Reset Threshold Voltage (V) Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.683|2.338|3.086|4.675|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|3.086|2.338|1.683|1.403|Adj|Adj Adj|Adj|Adj|4.675|3.086|2.338|1.683|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.683|2.338|3.086|4.675 Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|3.086|2.338|1.683|1.403 Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|3.086|1.683|1.403|Adj|Adj|2.338
Maximum Reset Threshold Voltage (V) Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.71|2.375|3.135|4.75 Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|3.135|2.375|1.71|1.425|Adj|Adj Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|4.75|3.135|2.375|1.71|Adj|Adj|Adj|Adj|Adj|Adj Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.71|2.375|3.135|4.75|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|3.135|2.375|1.71|1.425|Adj|Adj Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|3.135|2.375|1.71|1.425|Adj|Adj
Monitored Voltage (V) Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|5|3.3|2.5|1.8|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj 1.5|1.8|2.5|3.3|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|1.8|2.5|3.3|5|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj Adj|Adj|5|3.3|2.5|1.8|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj 1.5|3.3|2.5|1.8|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj 1.5|1.8|2.5|3.3|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj|Adj
Minimum Operating Supply Voltage (V) 0.5 0.5 0.5 0.5 0.5 0.5
Maximum Operating Supply Voltage (V) 6 6 6 6 6 6
Power Fail Detection No No No No No No
Watchdog Timer No No No No No No
Manual Reset Yes Yes Yes Yes Yes Yes
Chip Enable Signals No No No No No No
Battery Backup Switching Yes Yes Yes Yes Yes Yes
Maximum Operating Temperature (°C) 85 85 70 70 70 85
Supplier Temperature Grade Industrial Industrial Commercial Commercial Commercial Industrial
Type Voltage Monitor Voltage Monitor Voltage Monitor Voltage Monitor Voltage Monitor Voltage Monitor
Pin Count 8 8 8 8 8 8
Standard Package Name SOT-23 SOT-23 DFN SOT-23 SOT-23 DFN
Supplier Package TSOT-23 TSOT-23 DFN EP TSOT-23 TSOT-23 DFN EP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.9(Max) 0.9(Max) 0.75(Max) 0.9(Max) 0.9(Max) 0.75(Max)
Package Length 2.9 2.9 3 2.9 2.9 3
Package Width 1.75(Max) 1.75(Max) 2 1.75(Max) 1.75(Max) 2
PCB changed 8 8 8 8 8 8
Lead Shape Gull-wing Gull-wing No Lead Gull-wing Gull-wing No Lead
HTS 8542.39.00.01 8542.39.00.01 - 8542.39.00.01 8542.39.00.01 8542.39.00.01
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