8x8 CMOS multiplier in a 40-pin ceramic DIP
The ADSP-1081AKN is an 8x8 CMOS digital multiplier from Analog Devices — a parallel multiplier that takes two 8-bit operands and produces a 16-bit product in a single clock cycle. It belongs to the class of hardware multipliers that offload multiply-accumulate operations from a general-purpose processor, useful in early DSP systems, digital filters, and real-time signal processing where a CPU's software multiply was too slow. The 0.600" width means it does not fit a narrow 0.300" DIP socket; the socket must be the wider 40-pin type.
Active lifecycle, legacy RoHS status
The RoHS compliance status is marked as non-compliant. This is typical for a ceramic DIP part from this era — the lead-frame and solder plating use leaded materials. For projects that require RoHS exemption (e.g., military, aerospace, or medical where leaded solder is still permitted), this is not a blocker. For commercial RoHS-mandated builds, a lead-free equivalent or an exemption waiver is needed.