Datasheet

R2
_
+
R1
V
DD
GND
RESET
TLV809
Oscillator
Reference
Voltage
of 1.137 V
Reset
Logic
+
Timer
t
d
t
d
t
V
DD
V
(NOM)
V
IT
1.1 V
1
0 t
RESET
ForV <1.1VUndefined
BehaviorofRESET Output
DD
TLV809J25, TLV809L30
TLV809K33, TLV809I50
SLVSA03C –JUNE 2010–REVISED FEBRUARY 2012 www.ti.com
TIMING REQUIREMENTS
At R
L
= 1 MΩ, C
L
= 50 pF, T
A
= +25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
w
Pulse width at V
DD
V
DD
= V
IT–
+ 0.2 V, V
DD
= V
IT–
– 0.2 V 3 µs
SWITCHING CHARACTERISTICS
At R
L
= 1 MΩ, C
L
= 50 pF, T
A
= +25°C.
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
t
d
Delay time V
DD
≥ V
IT–
+ 0.2 V; see timing diagram 120 200 280 ms
Propagation (delay) time,
t
PHL
V
DD
to RESET delay V
IL
= V
IT–
– 0.2 V, V
IH
= V
IT–
+ 0.2 V 1 µs
high-to-low-level output
FUNCTIONAL BLOCK DIAGRAM
TIMING DIAGRAM
4 Submit Documentation Feedback Copyright © 2010–2012, Texas Instruments Incorporated
Product Folder Link(s): TLV809J25 TLV809L30 TLV809K33 TLV809I50