CMOS XOR gate — what the 4070BDM does and why it matters
The Texas Instruments 4070BDM is a CMOS XOR gate — a quad 2-input exclusive-OR logic device from the 4000-series family. It performs the Boolean XOR function on two inputs per gate, outputting a high when the inputs differ. The CMOS construction gives it wide supply tolerance and very low quiescent current draw, so it fits battery-backed or lightly regulated rails where a 74HC part might exceed the supply ceiling.
Active production — no end-of-life concern for this logic part
That means the die, the mask set, and the assembly line are still running, so new-design qualification is straightforward and the supply chain does not depend on surplus inventory. One compliance detail to flag: the 4070BDM is RoHS non-compliant. The lead-bearing finish is typical of older CMOS logic that predates the RoHS transition.
Bulk delivery — what the package tells you about handling
This order code ships in Bulk — loose tubes or antistatic bags, not tape-and-reel. For a reflow line that expects 13-inch reels, you will need to hand-place or transfer to a tube feeder. For prototype runs or repair-stock replenishment, bulk delivery avoids the minimum reel quantity and the reel-deposit cost.
Sourcing the 4070BDM — genuine-part assurance
Sourced through independent distribution, each 4070BDM lot is verified against Texas Instruments' marking and date-code standards before it reaches your bench. The laser-etched top mark — TI logo, date-code in YWW format, and the 4070BDM part number — must match the known font and kerning for the assembly plant and week. Any sanded, re-marked, or inconsistent lot gets rejected before shipment.