XINLUDA Electronic Parts
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The Xinluda XD74LS21 is a dual 4-input positive AND gate built on the industry-standard 74LS (low-power Schottky TTL) logic architecture. Housed in a 14-pin dual in-line package (DIP-14), it integrates two independent 4-input AND gates, each driving its output high only when all four of its inputs are at a logic-high level. As a pin-for-pin and function-compatible equivalent of the classic 74LS21 / 7421, it is widely used as a drop-in replacement in legacy and cost-sensitive digital designs.
The Xinluda XD74LS21 is an asia-brand logic part with limited authorized-distributor availability, which can make it difficult to source through mainstream channels. Pacific Component Xchange is an independent distributor specializing in hard-to-find and obsolete power-management ICs, optocouplers, and logic devices. We help engineers and buyers secure scarce 74LS-series components for production, maintenance, and end-of-life builds.
Every order is backed by our authenticity and quality-assurance process, and we ship globally to support your schedule. Because this is a request-for-quote item, pricing and lead time are confirmed per order. Submit an RFQ to Pacific Component Xchange today for current availability, quantity pricing, and delivery on the XD74LS21.
The XD74LS21 is Xinluda's version of the standard 74LS21 dual 4-input positive AND gate. It contains two independent 4-input AND gates in a single 14-pin DIP package, built on the 74LS low-power Schottky TTL logic family.
Yes. The XD74LS21 is a function- and pin-compatible equivalent of the industry-standard 74LS21 / 7421 dual 4-input AND gate, making it a drop-in replacement in existing designs.
The XD74LS21 is supplied in a 14-pin dual in-line package (DIP-14) for through-hole mounting.
As a 74LS TTL device, it operates from a nominal 5 V supply, with a recommended range of 4.75 V to 5.25 V.
The XD74LS21 is an asia-brand logic part with limited authorized-distributor stock. Pacific Component Xchange specializes in sourcing hard-to-find and obsolete logic devices and can provide it on a request-for-quote basis.
Because the XD74LS21 is a request-for-quote item, submit an RFQ to Pacific Component Xchange for current availability, quantity-based pricing, and lead time.
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