54S40DM, TTL NAND Gate, Dual 4-Input, Bulk package, Active lifecycle, RoHS non-compliant.
| Parameter | Value |
|---|---|
| Series | * |
| Package | Bulk |
The 54S40DM: However, it is marked RoHS non-compliant, which restricts its use in assemblies covered by the RoHS directive unless an exemption applies. For new designs requiring RoHS compliance, a lead-free alternative from the 54S family or a functionally equivalent 74S-series part should be evaluated.
As an active TTL device with a long production history, the 54S40DM is widely available through independent distribution.
The 4030BDM is a different device — it is a quad 2-input NOR gate (not a NAND gate) and is not a direct functional replacement. For a NAND-gate substitute, look at the 54S00 series (quad 2-input NAND) or the 54S10 series (triple 3-input NAND). The 54S40 itself is a dual 4-input NAND; no pin-compatible second source is listed in the manufacturer's cross-reference.