The 'HC266 devices have four independent 2-input exclusive-NOR gates and feature open-drain outputs. They perform the Boolean function Y = A ⊗ B or Y = AB + AB in positive logic.
The SN54HC266 and SN74HC266 devices each contain four independent 2‑input exclusive‑NOR gates with open‑drain outputs. They operate from 2 V to 6 V, draw low input current (1 µA max) and can drive up to ±4 mA at 5 V. Typical propagation delay is 10 ns and power consumption is low (≈20 µA).\n\nOrdering information lists multiple package options such as PDIP, SOIC, and NS, with details on pin count, reel quantities, and RoHS compliance. Additional packaging, thermal, and tape‑and‑reel dimensions are provided, and the datasheet references TI’s application report for handling floating inputs.
| Operating voltage range | 2 V to 6 V |
|---|---|
| Output drive current (5 V) | ±4 mA |
| Input current (max) | 1 µA |
| Continuous output current | ±25 mA |
The devices operate from 2 V to 6 V.
They can source or sink up to ±25 mA continuous output current.
The typical input current is 1 µA max.