LTC6994 - TimerBlox: Delay Block/ Debouncer
Features
- Delay Range: 1μs to 33.6 Seconds
- Configured with 1 to 3 Resistors
- Delay Max Error:
- <2.3% for Delay > 512µs
- <3.4% for Delay of 8µs to 512µs
- <5.1% for Delay of 1µs to 8µs - Delay One or Both Rising/Falling Edges
- 2.25V to 5.5V Single Supply Operation
- 70μA Supply Current at 10μs Delay
- 500μs Start-Up Time
- CMOS Output Driver Sources/Sinks 20mA
- –55°C to 125°C Operating Temperature Range
- Available in Low Profile (1mm) SOT-23 (ThinSOT™) and 2mm × 3mm DFN
- Click here to start your design with the LTC6994 Online Design Tool!
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC®6994 is a programmable delay block with a range of 1μs to 33.6 seconds. The LTC6994 is part of the TimerBlox® family of versatile silicon timing devices.
A single resistor, RSET , programs an internal master oscillator frequency, setting the LTC6994’s time base. The input-to-output delay is determined by this master oscillator and an internal clock divider, NDIV , programmable to eight settings from 1 to 221:
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC6994CDCB-1#PBF | 2x3 DFN-6 | DCB | C | 05-08-1715 | Yes |
| LTC6994CDCB-1#TRMPBF | 2x3 DFN-6 | DCB | C | 05-08-1715 | Yes |
| LTC6994CDCB-1#TRPBF | 2x3 DFN-6 | DCB | C | 05-08-1715 | Yes |
| LTC6994CDCB-2#PBF | 2x3 DFN-6 | DCB | C | 05-08-1715 | Yes |
| LTC6994CDCB-2#TRMPBF | 2x3 DFN-6 | DCB | C | 05-08-1715 | Yes |
| LTC6994CDCB-2#TRPBF | 2x3 DFN-6 | DCB | C | 05-08-1715 | Yes |
| LTC6994CS6-1#PBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC6994CS6-1#TRMPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC6994CS6-1#TRPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC6994CS6-2#PBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC6994CS6-2#TRMPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC6994CS6-2#TRPBF | SOT-23 | S6 | C | 05-08-1636 | Yes |
| LTC6994HDCB-1#PBF | 2x3 DFN-6 | DCB | H | 05-08-1715 | Yes |
| LTC6994HDCB-1#TRMPBF | 2x3 DFN-6 | DCB | H | 05-08-1715 | Yes |
| LTC6994HDCB-1#TRPBF | 2x3 DFN-6 | DCB | H | 05-08-1715 | Yes |
| LTC6994HDCB-2#PBF | 2x3 DFN-6 | DCB | H | 05-08-1715 | Yes |
| LTC6994HDCB-2#TRMPBF | 2x3 DFN-6 | DCB | H | 05-08-1715 | Yes |
| LTC6994HDCB-2#TRPBF | 2x3 DFN-6 | DCB | H | 05-08-1715 | Yes |
| LTC6994HS6-1#PBF | SOT-23 | S6 | H | 05-08-1636 | Yes |
| LTC6994HS6-1#TRMPBF | SOT-23 | S6 | H | 05-08-1636 | Yes |
| LTC6994HS6-1#TRPBF | SOT-23 | S6 | H | 05-08-1636 | Yes |
| LTC6994HS6-2#PBF | SOT-23 | S6 | H | 05-08-1636 | Yes |
| LTC6994HS6-2#TRMPBF | SOT-23 | S6 | H | 05-08-1636 | Yes |
| LTC6994HS6-2#TRPBF | SOT-23 | S6 | H | 05-08-1636 | Yes |
| LTC6994IDCB-1#PBF | 2x3 DFN-6 | DCB | I | 05-08-1715 | Yes |
| LTC6994IDCB-1#TRMPBF | 2x3 DFN-6 | DCB | I | 05-08-1715 | Yes |
| LTC6994IDCB-1#TRPBF | 2x3 DFN-6 | DCB | I | 05-08-1715 | Yes |
| LTC6994IDCB-2#PBF | 2x3 DFN-6 | DCB | I | 05-08-1715 | Yes |
| LTC6994IDCB-2#TRMPBF | 2x3 DFN-6 | DCB | I | 05-08-1715 | Yes |
| LTC6994IDCB-2#TRPBF | 2x3 DFN-6 | DCB | I | 05-08-1715 | Yes |
| LTC6994IS6-1#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC6994IS6-1#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC6994IS6-1#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC6994IS6-2#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC6994IS6-2#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC6994IS6-2#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC6994MPS6-1#PBF | SOT-23 | S6 | MP | 05-08-1636 | Yes |
| LTC6994MPS6-1#TRMPBF | SOT-23 | S6 | MP | 05-08-1636 | Yes |
| LTC6994MPS6-1#TRPBF | SOT-23 | S6 | MP | 05-08-1636 | Yes |
| LTC6994MPS6-2#PBF | SOT-23 | S6 | MP | 05-08-1636 | Yes |
| LTC6994MPS6-2#TRMPBF | SOT-23 | S6 | MP | 05-08-1636 | Yes |
| LTC6994MPS6-2#TRPBF | SOT-23 | S6 | MP | 05-08-1636 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
sales office or authorized distributor.Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1562B-K | LTC6994-1: 100ms, Falling Edge, Delayed from Trigger Falling Edge | $25.00 | |
| DC1562B-L | LTC6994-2 Demo Board | 100ms, Output Rising Edge Delayed from Trigger Rising Edge | $25.00 | |
| Buy Now | |||
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC6994HS6-1#PBF | SOT-23 | H | $2.63 | Yes | ||
| LTC6994HS6-1#TRMPBF | SOT-23 | H | $2.63 | $1.94 | Yes | |
| LTC6994HS6-1#TRPBF | SOT-23 | H | $2.63 | $1.89 | Yes | |
| LTC6994HS6-2#PBF | SOT-23 | H | $2.63 | Yes | ||
| LTC6994HS6-2#TRMPBF | SOT-23 | H | $2.63 | $1.94 | Yes | |
| LTC6994IS6-1#PBF | SOT-23 | I | $2.16 | Yes | ||
| LTC6994IS6-1#TRMPBF | SOT-23 | I | $2.16 | $1.60 | Yes | |
| LTC6994IS6-1#TRPBF | SOT-23 | I | $2.16 | $1.55 | Yes | |
| LTC6994IS6-2#PBF | SOT-23 | I | $2.16 | Yes | ||
| LTC6994IS6-2#TRMPBF | SOT-23 | I | $2.16 | $1.60 | Yes | |
| LTC6994IS6-2#TRPBF | SOT-23 | I | $2.16 | $1.55 | Yes | |
| LTC6994MPS6-1#PBF | SOT-23 | MP | $5.64 | Yes | ||
| LTC6994MPS6-1#TRMPBF | SOT-23 | MP | $5.64 | $4.10 | Yes | |
| LTC6994MPS6-1#TRPBF | SOT-23 | MP | $5.64 | $4.05 | Yes | |
| LTC6994MPS6-2#PBF | SOT-23 | MP | $5.64 | Yes | ||
| LTC6994MPS6-2#TRMPBF | SOT-23 | MP | $5.64 | $4.10 | Yes | |
| LTC6994MPS6-2#TRPBF | SOT-23 | MP | $5.64 | $4.05 | Yes | |
| Buy Now • Request Samples | ||||||
Applications
- Noise Discriminators/Pulse Qualifiers
- Delay Matching
- Switch Debouncing
- High Vibration, High Acceleration Environments
- Portable and Battery-Powered Equipment
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
To launch a ready to run LTspice demonstration circuit for this part:
- Step 1: If you have not installed LTspice on this computer, download and install LTspice
- Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
- LTC6993 / LTC6994 Demo Circuit - Consecutive Test Sequencer (1 sec Duration Sequential Test Pulses after Initial Delay)
- LTC6994 / LTC6993 Demo Circuit - Delayed One-Shot (50ms Delay with a 10ms One Shot)
- LTC6991/LTC6994 Demo Circuit - Intervalometer for Time-Lapse Photography (Adjustable Aperture from 1/4sec to 4sec)
- LT6108 / LTC6994 Demo Circuit - Energy-Tripped Circuit Breaker with Automatic Delayed Retry (5-80V Input, 500mA Threshold)
- LTC6994 Demo Circuit - Programable Pulse Delay Block
- LTC6994-1/-2 Demo Circuit - Noise Discriminator
- LTC6994-1/LTC1541 Demo Circuit - High Accuracy, µPower, Over-Voltage Detector with Glitch Suppressor
- Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu
To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.
Models for the following parts are available in LTspice:
LTC6994-1
LTC6994-2
LTC6994 Online Design Tool
The LTC6994 Online Design Tool is a synthesis and configuration tool that allows you to:
- Select the frequency and duty cycle of operation
- Calculate the required external component values
- Export to LTspice for simulation
Click here to start your design with the LTC6994 Online Design Tool
TimerBlox Designer (MS Excel)
Use this Excel based tool to speed your designs with the LTC6990, LTC6991, LTC6992, LTC6993, LTC6994 and LTC6995
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
