Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Function | Quad differential comparator |
| Channels | 4 |
| Supply voltage | Up to 30 V |
| Output | Open collector |
| Input common-mode range | Includes ground; up to approximately VCC – 1.5 V |
| Propagation delay | ~1.3 µs family-class value |
| Package | TSSOP-14 / PW |
| Temperature range | -40°C to +125°C |
Product Overview
LM2901PWR is TI’s active TSSOP-14 tape-and-reel orderable for the LM2901 quad comparator. Four independent comparator channels share the supply while providing open-collector outputs that can be pulled up to a logic rail appropriate for the receiving circuit.
The open-collector architecture is a core selection point: each output needs an external pull-up, but that also makes wired-logic and level interfacing possible within the output-voltage limits.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| Comparator channels | 4 |
| Maximum supply voltage | 30 V |
| Input common-mode | Includes 0 V; upper end roughly VCC – 1.5 V |
| Input bias current | 250 nA maximum family specification |
| Propagation delay | ~1.3 µs reference value |
| Output type | Open collector |
| Operating temperature | -40°C to +125°C |
| Package | 14-pin TSSOP |
| Packing | Large reel, 2,000 pieces |
Design Considerations
Every output requires a pull-up resistor. Choose the pull-up to meet low-level current, rise-time and power requirements; a very large resistor reduces current but slows rising edges through load capacitance.
Keep both comparator inputs inside the valid common-mode range. Inputs near the positive rail can leave the specified region even though the absolute-maximum voltage has not been exceeded.
Related Engineering Resources
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