These devices contain four independent 2-input positive-NOR buffers with open-collector outputs. Open-collector outputs require resistive pullup to perform correctly. They can deliver higher VOH levels and commonly are used in wired-AND applications. These devices perform the Boolean functions Y = A • B or Y = A + B in positive logic.
The SN54ALS33A is characterized for operation over the full military temperature range of
–55°C to 125°C. The SN74ALS33A is characterized for operation from 0°C to 70°C.
| Technology family | ALS |
| Number of channels | 4 |
| Supply voltage (min) (V) | 4.5 |
| Supply voltage (max) (V) | 5.5 |
| Inputs per channel | 2 |
| IOL (max) (mA) | 0.4 |
| IOH (max) (mA) | -8 |
| Output type | Open-collector |
| Input type | Bipolar |
| Features | Very high speed (tpd 5-10ns) |
| Data rate (max) (Mbps) | 100 |
| Rating | Military |
| Operating temperature range (°C) | -55 to 125 |
| CDIP (J) | 14 | 130.4652 mm² 19.56 x 6.67 |
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