| PartNumber | SN74AHCT138NSR | SN74AHCT138NE4 | SN74AHCT138N |
| Description | Encoders, Decoders, Multiplexers & Demultiplexers 3-Line to 8-Line Decoder/Demltplxr | Encoders, Decoders, Multiplexers & Demultiplexers 3-Line to 8-Line Decoder/Demltplxr | Encoders, Decoders, Multiplexers & Demultiplexers Line Decoder |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Category | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers |
| RoHS | Y | Y | Y |
| Product | Decoders / Demultiplexers | Decoders / Demultiplexers | Decoders / Demultiplexers |
| Logic Family | AHCT | AHCT | AHCT |
| Number of Bits | 8 bit | 8 bit | 8 bit |
| Number of Input Lines | 3 Input | 3 Input | 3 Input |
| Number of Output Lines | 8 Output | 8 Output | 8 Output |
| Propagation Delay Time | 12 ns | 12 ns | 12 ns |
| Supply Voltage Min | 4.5 V | 4.5 V | 4.5 V |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Mounting Style | SMD/SMT | Through Hole | Through Hole |
| Package / Case | SO-16 | PDIP-16 | PDIP-16 |
| Packaging | Reel | Tube | Tube |
| Function | Decoder/Demultiplexer | Decoder/Demultiplexer | Decoder/Demultiplexer |
| Height | 1.95 mm | 4.57 mm | 4.57 mm |
| Length | 10.3 mm | 19.3 mm | 19.3 mm |
| Number of Circuits | Quad | Quad | Quad |
| Operating Temperature Range | - 40 C to + 85 C | - 40 C to + 85 C | - 40 C to + 85 C |
| Series | SN74AHCT138 | SN74AHCT138 | SN74AHCT138 |
| Technology | CMOS | CMOS | CMOS |
| Width | 5.3 mm | 6.35 mm | 6.35 mm |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Logic Type | Decoders/Demultiplexers | Decoders/Demultiplexers | Decoders/Demultiplexers |
| Supply Current Max | 0.004 mA | 0.004 mA | 0.004 mA |
| High Level Output Current | - 8 mA | - 8 mA | - 8 mA |
| Low Level Output Current | 8 mA | 8 mA | 8 mA |
| Maximum Clock Frequency | 70 MHz | 70 MHz | 70 MHz |
| Operating Supply Voltage | 5 V | 5 V | 5 V |
| Product Type | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers |
| Factory Pack Quantity | 2000 | 25 | 25 |
| Subcategory | Logic ICs | Logic ICs | Logic ICs |
| Unit Weight | 0.007079 oz | 0.033570 oz | 0.033570 oz |
| Pd Power Dissipation | - | - | 300 mW |