The 74LS132 contains four independent gates each of which performs the logic NAND function. Each circuit functions as a 2-input NAND gate, but because of the Schmitt action, it has different input threshold levels for positive (VT+) and for negative going (VT-) signals. These circuits are temperature-compensated and can be triggered from the slowest of input ramps and still give clear, jitter-free output signals. The SN54132, SN54LS132, and SN54S132 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74132, SN74LS132, and SN74S132 are characterized for operation from 0°C to 70°C. This product is known as SN74LS132D, SN74LS132N, SN74LS132DR, SN74LS132NSR, 74LS132 NAND Gate, 74LS132 Quad 2-Input Schmitt Trigger NAND Gate IC, 74LS132 2-Input Schmitt Trigger NAND Gate IC, 74LS132 Schmitt Trigger NAND Gate IC, 74LS132 2 Input Schmitt Trigger NAND Gate IC.