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LM3704 Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM3704
Description  Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output and Manual Reset
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM3704 Datasheet(HTML) 6 Page - National Semiconductor (TI)

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LM3704/LM3705 Series Electrical Characteristics (Continued)
Limits in the standard typeface are for T
J = 25˚C and limits in boldface type apply over full operating range. Unless otherwise
specified: V
CC = +2.2V to 5.5V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
PFI/MR
V
PFT
PFI Input
Threshold
1.200
1.225
1.250
V
V
MRT
MR Input
Threshold
MR, Low
0.8
V
MR, High
2.0
V
PFTH/
V
MRTH
PFI/MR Threshold
Hysteresis
PFI/MR falling: V
CC =VRST MAX to 5.5V
0.0032
V
RST
mV
I
PFI
Input Current (PFI
only)
−75
75
nA
R
MR
MR Pull-up
Resistance
35
56
75
k
t
MD
MR to Reset
Delay
12
µS
t
MR
MR Pulse Width
25
µS
PFO, LLO
V
OL
PFO, LLO Output
Voltage
V
CC > 2.25V, ISINK = 900µA
0.3
V
V
CC > 2.7V, ISINK = 1.2mA
0.3
V
CC > 4.5V, ISINK = 3.2mA
0.4
V
OH
V
CC > 2.25V, ISOURCE = 300µA
0.8 V
CC
V
CC > 2.7V, ISOURCE = 500µA
0.8 V
CC
V
CC > 4.5V, ISOURCE = 800µA
V
CC − 1.5V
LLO OUTPUT
V
LLOT
LLO Output
Threshold
(V
LLO −VRST,VCC
falling)
1.01
V
RST
1.02
V
RST
1.03
V
RST
V
V
LLOTH
Low-Line
Comparator
Hysteresis
0.0032
V
RST
mV
t
CD
Low-Line
Comparator Delay
V
CC falling at 1mV/µs
20
µs
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device
is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the
listed conditions.
Note 2: The Human Body model is a 100 pF capacitor discharged through a 1.5 k
Ω resistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin.
Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(MAX), the junction-to-ambient thermal resistance, θJ-A,
and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperture is calculated using:
Where the value of
θJ-A for the MSOP-10 package is 195˚C/W in a typical PC board mounting and the micro SMD package is 220˚C/W.
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