What this 4-bit TTL shift register is
The 93L00DM is a 4-bit TTL shift register.
Key characteristics for BOM fit
This part is RoHS non-compliant, which means it contains lead or other restricted substances — a critical constraint for any BOM destined for EU RoHS-regulated markets or green-label programs.
Lifecycle and sourcing reality
No official successor or second-source cross-reference is documented in the available records.