You're currently on: Catalog » DIY Kits, Electronics and ICs » 74LS221 – dual monostable multivibrator with Schmitt-trigger inputs, LS-TTL, DIP-16 (generic)
The 74LS221 is a low-power Schottky TTL IC containing two independent monostable multivibrators (one-shots). Each section features Schmitt-trigger inputs, providing reliable triggering even with slow-rising or noisy input signals. The output pulse width is accurately controlled by external resistors and capacitors. It runs from a 5 V supply. It comes in a 16-pin plastic DIP.
Condition: mixed surplus lot, untested. The bag may contain used (pulled) ICs of the same type from different manufacturers, so marking and date code vary. The photo shows one chip from this lot (National DM74LS221N SP8824); only the background was cleaned to white, preserving the marking and leads.
Minimum order: 1 pc.
SN74LS221 datasheet (Texas Instruments, reference)
Listed prices include 25% VAT when browsing as guest. Orders to U.S.A. charged 30% import tariffs at checkout instead. VAT and tariffs removed at checkout if excempt(outside EU and U.S.A)
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