LTC2914
4
2914fc
For more information www.linear.com/LTC2914
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
Note 3: V
CC
maximum pin voltage is limited by input current. Since the
V
CC
pin has an internal 6.5V shunt regulator, a low impedance supply that
exceeds 6V may exceed the rated terminal current. Operation from higher
voltage supplies requires a series dropping resistor. See Applications
Information.
Note 4: Guaranteed by design, not subject to test.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
TMR(DIS)
Timer Disable Voltage Referenced to V
CC
l
–180 –270 mV
V
OH
Output Voltage High UV/OV V
CC
= 2.3V, I
UV/OV
= –1µA
l
1 V
V
OL
Output Voltage Low UV/OV V
CC
= 2.3V, I
UV/OV
= 2.5mA
V
CC
= 1V, I
UV
= 100µA
l
l
0.1
0.01
0.3
0.15
V
V
Three-State Input SEL
V
IL
Low Level Input Voltage
l
0.4 V
V
IH
High Level Input Voltage
l
1.4 V
V
Z
Pin Voltage when Left in Hi-Z State I
SEL
= ±10µA
l
0.7 0.9 1.1 V
–40ºC < T
A
< 125ºC
l
0.6 0.9 1.2 V
I
SEL
SEL High, Low Input Current
l
±25 µA
I
SEL(MAX)
Maximum SEL Input Current SEL Tied to Either V
CC
or GND
l
±30 µA
t
PW
Latch Clear Pulse Width (Note 4)
l
2 µs
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3.3V, VLn = 0.45V, VHn = 0.55V, LATCH = V
CC
, SEL = V
CC
,
DIS = Open unless otherwise noted. (Note 2)
elecTrical characTerisTics
LTC2914
5
2914fc
For more information www.linear.com/LTC2914
Input Threshold Voltage
vs Temperature
Supply Current vs Temperature
V
CC
Shunt Voltage
vs Temperature
VHn Monitor Timing VLn Monitor Timing
VHn Monitor Timing (TMR Pin Strapped to V
CC
) VLn Monitor Timing (TMR Pin Strapped to V
CC
)
NOTE: WHEN AN INPUT IS CONFIGURED AS A NEGATIVE SUPPLY MONITOR, VHn WILL TRIGGER AN OV CONDITION AND VLn WILL TRIGGER A UV CONDITION
Specifications are at T
A
= 25°C, V
CC
= 3.3V unless otherwise noted.
TiMing DiagraMs
Typical perForMance characTerisTics
VHn
UV
V
UOT
1V
t
UOD
t
UOTO
2914 TD01
VLn
OV
V
UOT
1V
t
UOD
t
UOTO
2914 TD02
VHn
UV
V
UOT
1V
t
UOD
t
UOD
2914 TD03
VLn
OV
V
UOT
1V
t
UOD
t
UOD
2914 TD04
TEMPERATURE (°C)
–50
0.495
THRESHOLD VOLTAGE, V
OUT
(V)
0.497
0.499
0.501
–25
0
25 50
2914 G01
75
0.503
0.505
0.496
0.498
0.500
0.502
0.504
100
TEMPERATURE (°C)
–50 50 75–25 25
40
I
CC
(μA)
50
55
45
60
0
2914 G02
100
75
70
65
V
CC
= 5V
V
CC
= 3.3V
V
CC
= 2.3V
TEMPERATURE (°C)
–50
6.2
V
CC
(V)
6.3
6.4
6.5
6.6
6.8
–25
0 25 50
2914 G03
75 100
6.7
200μA
1mA
2mA
5mA
10mA
LTC2914
6
2914fc
For more information www.linear.com/LTC2914
V
CC
Shunt Voltage vs I
CC
Buffered Reference Voltage
vs Temperature
Transient Duration
vs Comparator Overdrive
UV Output Voltage vs V
CC
UV/OV Voltage Output Low
vs Output Sink Current
Reset Timeout Period
vs CapacitanceUV, I
SINK
vs V
CC
Reset Timeout Period
vs Temperature
UV Output Voltage vs V
CC
Specifications are at T
A
= 25°C, V
CC
= 3.3V unless otherwise noted.
Typical perForMance characTerisTics
I
CC
(mA)
–2 0
6.25
V
CC
(V)
6.45
6.75
2
6
8
2914 G04
6.35
6.65
6.55
4
10
12
25°C
–40°C
85°C
TEMPERATURE (°C)
–50
0.995
REFERENCE VOLTAGE, V
REF
(V)
0.997
0.999
1.001
–25
0
25 50
2914 G05
75
1.003
1.005
0.996
0.998
1.000
1.002
1.004
100
COMPARATOR OVERDRIVE PAST THRESHOLD (%)
0.1
400
TYPICAL TRANSIENT DURATION (μs)
500
600
700
1 10 100
2914 G06
300
200
100
0
V
CC
= 6V
RESET OCCURS
ABOVE CURVE
V
CC
= 2.3V
TEMPERATURE (°C)
–50
6
UV/OV TIMEOUT PERIOD, t
UOTO
(ms)
7
8
9
10
12
–25
0 25 50
2914 G07
75 100
11
C
TMR
= 1nF
SUPPLY VOLTAGE, V
CC
(V)
0
UV VOLTAGE (V)
0.4
0.6
0.8
2914 G08
0.2
0
0.2
0.4
0.6
1.0
0.8
V
CC
UV WITH
10k PULL-UP
UV WITHOUT
10k PULL-UP
SUPPLY VOLTAGE, V
CC
(V)
0
UV VOLTAGE (V)
3
4
5
4
2914 G09
2
1
0
1
2
3
5
VHn = 0.55V
SEL = V
CC
SUPPLY VOLTAGE, V
CC
(V)
0
PULL-DOWN CURRENT, I
UV
(mA)
3
4
5
4
2914 G10
2
1
0
1
2
3
5
VHn = 0.45V
SEL = V
CC
UV AT 150mV
UV AT 50mV
I
UV/OV
(mA)
0
0
UV/OV, V
OL
(V)
0.2
0.4
0.6
0.8
1.0
5
10 15 20
2914 G11
25 30
85°C
–40°C
25°C
TMR PIN CAPACITANCE, C
TMR
(nF)
10
UV/OV TIMEOUT PERIOD, t
UOTO
(ms)
100
1000
10000
0.1 10 100 1000
2914 G12
1
1

LTC2914HDHC-2#PBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Supervisory Circuits 4x UV/OV Pos/Neg V Mon
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union