LTC6994-1/LTC6994-2
TimerBlox: Delay Block/
Debouncer
Fea T Descrip T
n
Delay Range: 1s to 33.6 Seconds The LTC 6994 is a programmable delay block with a
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Configured with 1 to 3 Resistors range of 1s to 33.6 seconds. The LTC6994 is part of
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Delay Max Error: the TimerBlox family of versatile silicon timing devices.
<2.3% for Delay > 512s
A single resistor, R , programs an internal master os-
SET
<3.4% for Delay of 8s to 512s
cillator frequency, setting the LTC6994s time base. The
<5.1% for Delay of 1s to 8s
input-to-output delay is determined by this master oscil-
n
Delay One or Both Rising/Falling Edges
lator and an internal clock divider, N , programmable
DIV
n
2.25V to 5.5V Single Supply Operation
21
to eight settings from 1 to 2 :
n
70A Supply Current at 10s Delay
n N R
500s Start-Up Time 21
DIV SET
t = 1s, N = 1, 8, 64,...,2
DELAY DIV
n
CMOS Output Driver Sources/Sinks 20mA
50k
n
55C to 125C Operating Temperature Range
The output (OUT) follows the input (IN) after delaying
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Available in Low Profile (1mm) SOT-23 (ThinSOT)
the rising and/or falling transitions. The LTC6994-1 will
and 2mm 3mm DFN
delay the rising or falling edge. The LTC6994-2 will delay
both transitions, and adds the option to invert the output.
a T
DEVICE DELAY FUNCTION
n
Noise Discriminators/Pulse Qualifiers
LTC6994-1 or
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Delay Matching
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Switch Debouncing
n LTC6994-2 or
High Vibration, High Acceleration Environments
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Portable and Battery-Powered Equipment
The LTC6994 also offers the ability to dynamically adjust
L, LT, LTC, LTM, Linear Technology, TimerBlox and the Linear logo are registered trademarks
and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the
the delay time via a separate control voltage.
property of their respective owners.
For easy configuration of the LTC6994, download the
TimerBlox Designer tool at www.linear.com/timerblox.
Typical a T
Noise Discriminator
NOISY QUALIFIED
IN OUT
INPUT OUTPUT
IN
LTC6994-2
3.3V
2V/DIV
+
GND V
1.5s 1.5s
0.1F
OUT
SET DIV
2V/DIV
R
SET
699412 TA01a
75k
699412 TA01b
20s/DIV
699412fb
1
ion pplica
ions pplica
ion uresLTC6994-1/LTC6994-2
a T e Maxi Mu M r a T (Note 1)
+
Supply Voltage (V ) to GND ........................................6V Specified Temperature Range (Note 3)
Maximum Voltage on Any Pin LTC6994C ................................................ 0C to 70C
+
.................................. (GND 0.3V) V (V + 0.3V) LTC6994I .............................................40C to 85C
PIN
Operating Temperature Range (Note 2) LTC6994H .......................................... 40C to 125C
LTC6994C ............................................40C to 85C LTC6994MP ....................................... 55C to 125C
LTC6994I .............................................40C to 85C Junction Temperature ........................................... 150C
LTC6994H .......................................... 40C to 125C Storage Temperature Range .................. 65C to 150C
LTC6994MP ....................................... 55C to 125C Lead Temperature (Soldering, 10 sec)
S6 Package .......................................................300C
p c F T
TOP VIEW
TOP VIEW
+
V 1 6 OUT
IN 1 6 OUT
7
DIV 2 5 GND
+
GND 2 5 V
SET 4 IN
3
SET 3 4 DIV
DCB PACKAGE
S6 PACKAGE
6-LEAD (2mm 3mm) PLASTIC DFN
6-LEAD PLASTIC TSOT-23
T = 150C, = 64C/W, = 10.6C/W
T = 150C, = 192C/W, = 51C/W
JMAX JA JC JMAX JA JC
EXPOSED PAD (PIN 7) CONNECTED TO GND,
PCB CONNECTION OPTIONAL
o r D i n F Ma T
Lead Free Finish
TAPE AND REEL (MINI) TAPE AND REEL PART MARKING PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LTC6994CDCB-1#TRMPBF LTC6994CDCB-1#TRPBF LFCT 6-Lead (2mm 3mm) Plastic DFN 0C to 70C
LTC6994IDCB-1#TRMPBF LTC6994IDCB-1#TRPBF LFCT 6-Lead (2mm 3mm) Plastic DFN 40C to 85C
LTC6994HDCB-1#TRMPBF LTC6994HDCB-1#TRPBF LFCT 6-Lead (2mm 3mm) Plastic DFN 40C to 125C
LTC6994CDCB-2#TRMPBF LTC6994CDCB-2#TRPBF LFCW 6-Lead (2mm 3mm) Plastic DFN 0C to 70C
LTC6994IDCB-2#TRMPBF LTC6994IDCB-2#TRPBF LFCW 6-Lead (2mm 3mm) Plastic DFN 40C to 85C
LTC6994HDCB-2#TRMPBF LTC6994HDCB-2#TRPBF LFCW 6-Lead (2mm 3mm) Plastic DFN 40C to 125C
LTC6994CS6-1#TRMPBF LTC6994CS6-1#TRPBF LTFCV 6-Lead Plastic TSOT-23 0C to 70C
LTC6994IS6-1#TRMPBF LTC6994IS6-1#TRPBF LTFCV 6-Lead Plastic TSOT-23 40C to 85C
LTC6994HS6-1#TRMPBF LTC6994HS6-1#TRPBF LTFCV 6-Lead Plastic TSOT-23 40C to 125C
LTC6994MPS6-1#TRMPBF LTC6994MPS6-1#TRPBF LTFCV 6-Lead Plastic TSOT-23 55C to 125C
LTC6994CS6-2#TRMPBF LTC6994CS6-2#TRPBF LTFCX 6-Lead Plastic TSOT-23 0C to 70C
LTC6994IS6-2#TRMPBF LTC6994IS6-2#TRPBF LTFCX 6-Lead Plastic TSOT-23 40C to 85C
LTC6994HS6-2#TRMPBF LTC6994HS6-2#TRPBF LTFCX 6-Lead Plastic TSOT-23 40C to 125C
LTC6994MPS6-2#TRMPBF LTC6994MPS6-2#TRPBF LTFCX 6-Lead Plastic TSOT-23 55C to 125C
TRM = 500 pieces. *Temperature grades are identified by a label on the shipping container.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on lead based finish parts.
For more information on lead free part marking, go to: