These triple 3-input positive-NOR gates are designed for 2-V to 5.5-V VCC operation. The ’LV27A devices perform the Boolean function Y = A + B + C or Y = A • B • C in positive logic. These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down.
The SN54LV27A and SN74LV27A devices are triple 3‑input positive‑NOR gates (Y = A + B + C) designed for 2 V to 5.5 V supply operation. They support partial‑power‑down mode, have ESD protection, and are offered in a variety of surface‑mount packages.
The data sheet provides absolute‑maximum ratings, recommended operating conditions, detailed electrical and switching characteristics, and ordering information for multiple package types. It also includes packaging, mechanical drawings, and an important notice about product availability and warranty.
| Supply voltage range (VCC) | 2 V to 5.5 V |
|---|---|
| Continuous output current (VCC) | +25 mA |
| Continuous output current (GND) | +50 mA |
| Package thermal impedance (SOIC) | 6 °C/W |
| Storage temperature range | -65 °C to 150 °C |
The devices are specified for a free‑air temperature range of –40 °C to 85 °C (or 55 °C to 125 °C for some packages).