SN74AHC138PW OBSOLETE

2V-to-5.5V 3-line to 8-line decoder and demultiplexer

open-in-new View alternates

Pricing

Qty Price
+

Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

SN74AHC138PWR ACTIVE custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 2,000 | LARGE T&R
Inventory
Qty | Price 1ku | +

Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins TSSOP (PW) | 16
Operating temperature range (°C) -40 to 85
Package qty | Carrier 90 | TUBE

Features for the SN74AHC138

  • Operating Range 2-V to 5.5-V VCC
  • Designed Specifically for High-Speed Memory Decoders and Data-Transmission Systems
  • Incorporate Three Enable Inputs to Simplify Cascading and/or Data Reception
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

Description for the SN74AHC138

The ’AHC138 decoders/demultiplexers are designed for high-performance memory-decoding and data-routing applications that require very short propagation-delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory are usually less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible.

The conditions at the binary-select inputs and the three enable inputs select one of eight output lines. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented without external inverters, and a 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications.

Pricing

Qty Price
+

Additional package qty | Carrier options These products are exactly the same but come in a different carrier type

SN74AHC138PWR ACTIVE custom-reels CUSTOM Custom reel may be available
Package qty | Carrier 2,000 | LARGE T&R
Inventory
Qty | Price 1ku | +

Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

Learn more

Lot and date code selection may be available

Add a quantity to your cart and begin the checkout process to view the options available to select lot or date codes from existing inventory.

Learn more