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SN74AHCT138D is listed in the Signal Switches, Multiplexers, Decoders range at ChipApex. The manufacturer field lists Texas Instruments. Its product description is IC DECODER/DEMUX 1X3:8 16SOIC. Review the specifications below when checking this part for your BOM.
The SN74AHCT138D is a 3-line to 8-line decoder/demultiplexer from the AHCT logic family, manufactured by Texas Instruments. It operates within a supply voltage range of 1.5 V to 5.5 V and features TTL-compatible inputs. The device provides three enable inputs (one active-high G1, two active-low G2A/G2B) to simplify cascading and data routing. Designed for high-speed memory decoding applications, it offers low propagation delay times. The component is housed in a 16-pin Small Outline Integrated Circuit (SOIC) package with a body size of 9.90 mm x 3.90 mm.
Verify the specific ordering suffix against the latest Package Option Addendum to confirm current production status, as the base SN74AHCT138D designation may be obsolete while variants like SN74AHCT138DR remain active. Confirm RoHS compliance and lead finish details directly from manufacturer documentation prior to procurement.
Select this component when TTL input compatibility is required alongside high-speed performance characteristics. Ensure the operating temperature range of -40°C to +85°C aligns with the application environment. Verify that the 16-pin SOIC footprint matches the PCB layout constraints and thermal requirements.
This part belongs to the SNx4AHCT138 series of 3-line to 8-line decoders/demultiplexers. The 'SN' prefix indicates commercial grade, while '74' denotes the standard industrial temperature range variant. The 'AHCT' series specifies Advanced High-Speed CMOS technology with TTL-compatible inputs, bridging legacy logic interfaces with modern CMOS performance.
SN74AHCT138DR
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