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LM3704 Datasheet(PDF) 2 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) 2 Page - National Semiconductor (TI)

 
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Connection Diagram
MSOP-10
Top View
(looking from the coating side)
micro SMD 9 Bump Package
BPA09
10136902
10136901
Pin Description
Pin No.
Name
Function
micro
SMD
MSOP
A1
2
MR
Manual-Reset input. When MR is less than V
MRT (Manual Reset Threshold)
RESET/RESET is engaged.
B1
1
V
CC
Power Supply input.
C1
10
RESET
Reset Logic Output. Pulses low for t
RP (Reset Timeout Period) when triggered, and stays
low whenever V
CC is below the reset threshold or when MR is below VMRT. It remains low
for t
RP after either VCC rises above the reset threshold, or after MR input rises above
V
MRT (LM3704 only).
RESET
Reset Logic Output. RESET is the inverse of RESET (LM3705 only).
C2
8
PFO
Power-Fail Logic Output. When PFI is below V
PFT, PFO goes low; otherwise, PFO
remains high.
C3
7
LLO
Low-Line Logic Output. Early Power-Fail warning output. Low when V
CC falls below VLLOT
(Low-Line Output Threshold). This output can be used to generate an NMI (Non-Maskable
Interrupt) to provide an early warning of imminent power-failure.
B3
5
GND
Ground reference for all signals.
A3
4, 6
NC
No Connect.
A2
3
PFI
Power-Fail Comparator Input. When PFI is less than V
PFT (Power-Fail Reset Threshold),
the PFO goes low; otherwise, PFO remains high.
B2
9
NC
No Connect. Test input used at factory only. Leave floating.
www.national.com
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