Active production — 4-bit OTPROM core at 4.2 MHz
The HD4074224S04 is a 4-bit microcontroller with on-chip OTPROM, clocked at 4.2 MHz, from Renesas Electronics.
RoHS non-compliant — legacy lead-bearing construction
Marked RoHS non-compliant — the die attach or lead finish uses lead-bearing solder. This matters for EU RoHS-exempt applications (military, aerospace, medical implant, or high-reliability industrial where lead-free is not mandated) and for legacy BOMs that require the original tin-lead finish for solder-joint reliability on old board finishes. For RoHS-mandated production, a lead-free equivalent or a waivered exemption would need to be confirmed at the BOM level.
Supplied in Bulk packaging — loose tubes or trays, not tape-and-reel. Factor this into your pick-and-place feeder setup or manual assembly workflow.