Down-Conversion & Buffering: 3 Channels
- Three unidirectional channels with both non-inverting and inverting push-pull outputs
- Suitable for use as a non-inverting buffer
- Suitable for use as an inverting buffer
- Suitable for use as a logic voltage down-converter
- LEDs provide visual indication for power and all outputs
- Includes provision for user to easily customize to accommodate higher input voltages or open-collector/drain signals
- Typical application: convert 12V gear-tooth or wheel-speed sensor signal to 3.3V for FPGA / DAQ card
- Mounting Options: Rubber Feet, Panel, or DIN Rail
General Description
The BUFDNI103 provides 3 unidirectional channels that may each be used as a non-inverting buffer or inverting buffer. It is ideally suited for converting from higher-voltage logic down to lower-voltage logic (e.g., 5V logic --> 3.3V logic). The output logic voltage is determined by the supply voltage that is applied (from 2.0V to 6.0V).
Extra input-side terminal block positions and solder pads are included to allow the user to easily add pull-up resistors for interfacing to open-collector / open-drain outputs (if needed), and also to allow the user to easily implement a resistor divider for interfacing to signals that are higher than the allowed maximum value.
This board includes terminal blocks to provide convenient access to the signals.
Click image to enlarge.Applications
- Interface between gear tooth sensor and FPGA / DAQ card
- Interface between wheel speed sensor and FPGA / DAQ card
- Converting high logic voltage signals down to 3.3V or 5V logic signals
- General-purpose logic buffering or logic inversion
In this context, other names for buffers (or terms associated with buffers) are "signal amplifier," "logic level shifter," or "logic voltage translator."
Product Documents
| Part # | Description | Data Sheet | PDF Drawing | DWG Drawing | IGES Model | STEP Model |
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| BUFDNI103-DIN | 3-Channel Buffer, DIN Mount | 
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| BUFDNI103-FT | 3-Channel Buffer, Rubber Feet |
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3-Channel Buffer, DIN Mount
3-Channel Buffer, Rubber Feet
Mounting Options
These products are available in two different mounting variants. Product numbers ending with -DIN come with DIN clips already installed and ready to snap onto 35mm or 32mm DIN rail. Product numbers ending with -FT have stick-on rubber feet installed on the bottom side, allowing for benchtop use or panel mounting. For panel mounting, we suggest 1/4" nylon standoffs under the mounting holes, and #6 screws.
BUFDNI103-DIN
Click image to enlarge. Rail not included
BUFDNI103-FT
Click image to enlarge.Product Details
- Three unidirectional channels with both non-inverting and inverting push-pull outputs
- Suitable for use as a non-inverting buffer
- Suitable for use as an inverting buffer
- Suitable for use as a logic voltage down-converter
- Accepts input voltages up to 15.25V
- Output voltages may be anywhere from 2V to 6V
- LEDs provide visual indication for power and all outputs
- Includes provision for user to easily customize to accommodate higher input voltages or open-collector/drain signals
- Redundant ground connections at terminal block
- Typical application: convert 12V gear-tooth or wheel-speed sensor signal to 3.3V for FPGA / DAQ card
- Approximate dimensions: 3.2" x 2.5"
- Mounting Options: Rubber Feet, Panel, or DIN Rail
Pricing and Ordering
| Product # | Description | 1+ | 10+ | RoHS | Buy Now |
|---|---|---|---|---|---|
| BUFDNI103-DIN | Buffer, 3 channels, down-conversion, Non-inverting and Inverting, DIN mount | $28.35 | $26.75 | Yes | |
| BUFDNI103-FT | Buffer, 3 channels, down-conversion, Non-inverting and Inverting, Feet | $26.75 | $25.15 | Yes |
| Quantity | Price |
|---|---|
| 1+ | $28.35 |
| 10+ | $26.75 |
| Quantity | Price |
|---|---|
| 1+ | $26.75 |
| 10+ | $25.15 |
All of the above items are normally stocked. Please call us if you need to verify availability for a specific quantity, or for pricing at higher quantities. Please visit our ordering page for our ordering policies and a list of ordering methods.