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.
Simplified Schematic of BUFDNI103 (one channel shown) Click image to enlarge.
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."
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.
DIN Rail Mount BUFDNI103-DIN Click image to enlarge. Rail not included
Rubber Feet BUFDNI103-FT Click image to enlarge.
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
Buffer, 3 channels, down-conversion, Non-inverting and Inverting, rubber feet
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.