Skip to main content
Texas Instruments 7427DC — Analog & Data Acquisition
Texas Instruments

7427DC NOR Gate, TTL, Active, Bulk — Sourced to Order

MPN7427DC
End of Life

7427DC, TTL NOR Gate, Series *, Package Bulk, Lifecycle Active, RoHS Non-Compliant.

$0.37Ref. price · indicative, final on quote
7427DC datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

7427DC Technical Specifications
ParameterValue
Series*
PackageBulk

Product details

Lifecycle and compliance — what it means for your BOM

However, the part is RoHS non-compliant, which means it contains lead in the solder finish. This is acceptable for military, aerospace, industrial, and repair applications where leaded solder is still permitted, but it will not pass RoHS-required assembly lines. If your BOM mandates lead-free, you will need a different logic family such as the 74HC or 74AC series.

Sourcing the 7427DC

Because it is an active, RoHS non-compliant TTL part, it is not a high-volume commodity — expect to request a quote rather than pull from shelf stock. For dual-sourcing or a pin-compatible alternative, the 4030BDM is a functional match in the same TTL logic family, though verify the pinout and input count for your specific board layout.

Frequently asked questions

Is 7427DC RoHS compliant?

No, the 7427DC is RoHS non-compliant. It uses leaded solder finish, so it is not suitable for RoHS-mandated assembly lines. It remains acceptable for military, aerospace, industrial, and repair applications where leaded solder is permitted.

What is an equivalent or replacement for 7427DC?

A functional equivalent in the same TTL logic family is the 4030BDM (4030B quad 2-input NOR gate in Bulk). Verify the pinout and input count for your specific board layout before substituting.

Is 7427DC compatible with 74LS27?

The 7427DC is a standard TTL NOR gate, and the 74LS27 is a Low-Power Schottky TTL triple 3-input NOR gate. Both operate at 5 V and are logic-level compatible, but the 74LS27 has different input thresholds and propagation delays. They are not direct drop-in replacements without checking timing and drive current.