| Technology Family | ALS |
| Number of channels (#) | 3 |
| Supply voltage (Min) (V) | 4.5 |
| Supply voltage (Max) (V) | 5.5 |
| Inputs per channel | 3 |
| IOL (Max) (mA) | 8 |
| IOH (Max) (mA) | -0.4 |
| Output type | Push-Pull |
| Input type | Bipolar |
| Features | High speed (tpd 10- 50ns) |
| Data rate (Max) (Mbps) | 75 |
| Rating | Catalog |
- Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs
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These devices contain three independent 3-input positive-NOR gates. They perform the Boolean functions 
or 
in positive logic.
The SN54ALS27A and SN54AS27 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS27A and SN74AS27 are characterized for operation from 0°C to 70°C.
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