The 74HC138 is a high speed CMOS device. The device accepts a three bit binary weighted address on input pins A0, A1 and A2 and when enabled will produce one active low output with the remaing seven being high. There are two active LOW enable inputs E1 and E2, and one active HIGH enable input E3. The disabled device state results in all outputs being high. The enable state occurs with E1 and E2 asserted low and E3 asserted high. The multiple enable lines allow for the parallel expansion of decoders to create 4-to-16 line versions with no additional parts and 5-to-32 versions with the addition of a single inverter.
Fast Shipping and Professional Packing
We offer a broad range of shipping options owing to our long-running partnerships with UPS, FedEx and DHL. Our warehouse staff are expertly trained and will wrap your products according to our exact and precise specifications. Prior to shipping, your goods will be thoroughly inspected and secured. We deliver to thousands of customers each day across multiple countries. This is a sign of our determination to be the largest online retailer on the planet. The warehouses and centers for distribution are located in Europe and the USA.
Note: Orders that contain more than one item are assigned a processing period according to the item.
Before shipping, we will examine the items ordered thoroughly. Most orders are delivered within 48 hours. The delivery estimate is between 3-7 days.
Returns
Stock is dynamic. It's not completely managed by us, as we're involved with several parties such as the factory and our storage. This means that the actual stock could fluctuate at any moment. It's possible that your order could become unfulfilled after you place the order.
Our policy lasts for a period of 30 days. If you haven't received the product within 30 days, we are unable to offer the option of a refund or exchange.
Your item must be in its original packaging and in good condition. It must also not be used. It must also be returned in the original packaging.
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