8-input NAND in the 74HC family
The CD74HC30M is a single-circuit 8-input NAND gate from Texas Instruments' 74HC series, a high-speed CMOS logic family that bridges the speed of LSTTL with the low power of standard CMOS. The 8-input configuration means this gate produces a LOW output only when all eight inputs are HIGH — useful for address decoding, combinational logic reduction, or as a glitch-capture element in a hazard detection circuit. The single gate per package keeps the board footprint small when only one wide-NAND function is needed.
Temperature range and speed at 6V
The 22ns max propagation delay at 6V with a 50pF load sets the data-rate ceiling; at 3.3V the delay increases, so the actual toggle rate at the receiver is lower than the 6V spec suggests. Quiescent current is 2µA maximum, so the gate draws negligible power in a static state — a battery-backed system that holds the NAND output for months between state transitions sees no meaningful drain from this part.
14-SOIC package and board integration
Housed in a 14-SOIC package (3.90mm body width, 0.154" pitch), the CD74HC30M mounts on a standard surface-mount footprint shared with many 74HC logic devices. The tube packaging is typical for production runs where pick-and-place handles the reels; the 14-SOIC supplier device package is the same physical outline as other SOIC-14 logic gates, so the board layout is interchangeable with most 74HC/74HCT parts in this package. The input logic levels are 0.5V to 1.8V for LOW and 1.5V to 4.2V for HIGH at the 2V to 6V supply range — this hysteresis margin ensures noise immunity on a shared bus where the signal edges are not rail-to-rail.
It is ROHS3 compliant, so it meets the current EU substance restrictions without an exemption expiry date. No official second-source or pin-compatible alternative is recorded for this order code, but the 74HC logic family is widely second-sourced — any 74HC30 in a 14-SOIC package is functionally equivalent.