Quad 2-input NAND gate for 5V logic chains
The SN74HCT00D is a quad 2-input NAND gate from Texas Instruments' 74HCT series, in a 14-SOIC surface-mount package. With a maximum quiescent current of 2 µA and symmetrical 4mA output drive for both high and low states, this gate is a direct fit for 5V CMOS and TTL-compatible logic interfaces where low standby power matters. The 18ns propagation delay at 5.5V with a 50pF load sets the timing budget for the signal path — within tolerance for most 5V bus arbitration and control logic below 20 MHz.
What the key ratings mean for your BOM
The 2 µA quiescent current is the gate's own draw when all inputs are static — it does not scale with switching frequency. In a battery-backed or always-on section, this keeps the idle power below 10 µW at 5V. Symmetrical 4mA output drive means the gate can sink or source 4 mA while maintaining valid logic levels. This is enough to drive one or two standard 74HCT loads or a low-power LED indicator through a series resistor, but not a high-capacitance bus without a buffer. The input logic thresholds — 0.8V low and 2V high — are TTL-compatible, so this gate can be driven directly by 5V TTL outputs without a level translator. The 4.5V minimum supply ensures the high threshold is met with margin.
The 14-SOIC package (0.154-inch body width, 3.90mm) is a standard footprint shared across the 74HCT and 74HC logic families. The tube packaging is typical for through-hole and small-SOIC quantities; reel options may be available through alternate order codes.
The SN74HCT00D is sourced through independent and authorized distribution channels.