These devices contain four independent 2-input positive-NAND buffers. They perform the Boolean functions 
or Y = A + B in positive logic. The open-collector outputs require pullup resistors to perform correctly. These outputs may be connected to other open-collector outputs to implement active-low wired-OR or active-high wired-AND functions. Open-collector devices are often used to generate high VOH levels.
The SN54ALS03B is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS03B is characterized for operation from 0°C to 70°C.
| Technology family | ALS |
| Supply voltage (min) (V) | 4.5 |
| Supply voltage (max) (V) | 5.5 |
| Number of channels | 4 |
| Inputs per channel | 2 |
| IOL (max) (mA) | 8 |
| IOH (max) (mA) | 0 |
| Input type | Bipolar |
| Output type | Open-collector |
| Features | High speed (tpd 10- 50ns) |
| Data rate (max) (Mbps) | 75 |
| Rating | Catalog |
| Operating temperature range (°C) | 0 to 70 |
| PDIP (N) | 14 | 181.42 mm² 19.3 x 9.4 |
| SOIC (D) | 14 | 51.9 mm² 8.65 x 6 |
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