SN54ALS27A, SN54AS27 Three Independent 3-Input Positive NOR Gates
This handbook provides detailed information on the SN54ALS27A, SN54AS27, SN74ALS27A and SN74AS27 logic devices, including functional description, electrical characteristics, recommended operating conditions, and mechanical data. It also contains packaging options, material information, and regulatory notices.
The document includes absolute maximum ratings, supply voltage ranges, input and output voltage thresholds, output current capabilities, temperature specifications, and switching characteristics. Packaging tables list available device formats and eco‑plan status, while mechanical drawings give dimensions for the various package types.
| Supply voltage (VCC) | 4.5 V – 5.5 V |
|---|---|
| High‑level input voltage (VIH) | 2 V |
| Low‑level input voltage (VIL) | 0.8 V |
| High‑level output current (IOH) | -2 mA |
| Operating temperature (SN54ALS27A) | -55 °C to 125 °C |
| Operating temperature (SN74ALS27A) | 0 °C to 70 °C |
The SN54ALS27A is specified for operation from –55 °C to 125 °C.
They operate with a supply voltage between 4.5 V and 5.5 V.
The high‑level input voltage (VIH) is 2 V and the low‑level input voltage (VIL) is 0.8 V.