SN74LS138NAlternatives & Equivalent Parts
About SN74LS138N
SN74LS138N is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Dual-In-Line Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | SN74LS138NSource | L6981NDR | SN54LS138J | SN74LS138NE4 | AT28C64B-15SU-T | SN74LS08DR |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | STMicroelectronics | Texas Instruments | Texas Instruments | Microchip | Texas Instruments |
| Package Type | Dual-In-Line Packages | Small Outline Packages | Ceramic Dual-In-Line Packages | Dual-In-Line Packages | Small Outline Packages | Small Outline Packages |
| Pin Count | 16 | 8 | 16 | 16 | 28 | 14 |
| Temperature Range | ~ 70.0°C | -40.0°C ~ 150.0°C | -55.0°C ~ 125.0°C | ~ 70.0°C | -40.0°C ~ 85.0°C | ~ 70.0°C |
| Price | $0.4271 | $1.0372 | $7.7700 | $0.4430 | $4.8783 | $0.2000 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||
| JESD-30 Code | R-PDIP-T16 | R-PDSO-G8 | R-CDIP-T16 | R-PDIP-T16 | R-PDSO-G28 | R-PDSO-G14 |
| JESD-609 Code | e4 | e3 | e0 | e4 | e3 | e4 |
| Load Capacitance (CL) | 15 pF | — | 15 pF | 15 pF | — | 15 pF |
| Logic IC Type | 3-LINE TO 8-LINE DECODER | — | 3-LINE TO 8-LINE DECODER | 3-LINE TO 8-LINE DECODER | — | AND GATE |
| Pbfree Code | Yes | — | Yes | Yes | — | Yes |
| YTEOL | 15 | 8 | 15 | 15 | 14 | 15 |
| Additional Feature | 3 ENABLE INPUTS | — | 3 ENABLE INPUTS | 3 ENABLE INPUTS | 100K ENDURANCE CYCLES; 10 YEARS DATA RETENTION; AUTOMATIC PAGE WRITE | — |
| Family | LS | — | LS | LS | — | LS |
| Input Conditioning | STANDARD | — | STANDARD | STANDARD | — | — |
| Max I(ol) | 0.008 A | — | 0.004 A | 0.008 A | — | 0.016 A |
| Number of Bits | 8 | — | 8 | 8 | — | — |
| Number of Functions | 1 | 1 | 1 | 1 | 1 | 4 |
| Output Polarity | INVERTED | — | INVERTED | INVERTED | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | CERAMIC, METAL-SEALED COFIRED | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 | SOP8,.25 | DIP16,.3 | DIP16,.3 | SOP28,.4 | SOP14,.25 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | IN-LINE | SMALL OUTLINE | IN-LINE | IN-LINE | SMALL OUTLINE | SMALL OUTLINE |
| Packing Method | TUBE | — | TUBE | TUBE | — | TR |
| Power Supply Current-Max (ICC) | 10 mA | — | 10 mA | 10 mA | — | 8.8 mA |
| Prop. Delay@Nom-Sup | 41 ns | — | 41 ns | 41 ns | — | 20 ns |
| Propagation Delay (tpd) | 41 ns | — | 41 ns | 41 ns | — | 20 ns |
| Qualification Status | Not Qualified | — | Not Qualified | Not Qualified | — | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25 V | — | 5.5 V | 5.25 V | 5.5 V | 5.25 V |
| Supply Voltage-Min (Vsup) | 4.75 V | — | 4.5 V | 4.75 V | 4.5 V | 4.75 V |
| Supply Voltage-Nom (Vsup) | 5 V | — | 5 V | 5 V | 5 V | 5 V |
| Surface Mount | NO | YES | NO | NO | YES | YES |
| Technology | BIPOLAR | — | BIPOLAR | BIPOLAR | CMOS | TTL |
| Temperature Grade | COMMERCIAL | — | MILITARY | COMMERCIAL | INDUSTRIAL | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) - annealed | Tin/Lead (Sn/Pb) | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE | GULL WING | THROUGH-HOLE | THROUGH-HOLE | GULL WING | GULL WING |
| Terminal Pitch | 2.54 mm | 1.27 mm | 2.54 mm | 2.54 mm | 1.27 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL |
| ## SN74LS138N Alternates Showing results | Image | — | — | — | — | — |
| Analog IC - Other Type | — | SWITCHING REGULATOR | — | — | — | — |
| Control Mode | — | CURRENT-MODE | — | — | — | — |
| Control Technique | — | PULSE WIDTH MODULATION | — | — | — | — |
| Input Voltage-Max | — | 38 V | — | — | — | — |
| Input Voltage-Min | — | 3.5 V | — | — | — | — |
| Input Voltage-Nom | — | 24 V | — | — | — | — |
| Output Current-Max | — | 1.5 A | — | — | — | — |
| Output Voltage-Max | — | 38 V | — | — | — | — |
| Output Voltage-Min | — | 0.85 V | — | — | — | — |
| Peak Reflow Temperature (Cel) | — | 260 | — | — | 260 | 260 |
| Switcher Configuration | — | BUCK | — | — | — | — |
| Switching Frequency-Max | — | 440 kHz | — | — | — | — |
| ## SN74LS138NE4 Alternates Showing results | — | — | — | Image | — | — |
| Manufacturer Package Code | — | — | — | — | SOIC-28 | — |
| Factory Lead Time | — | — | — | — | 8 Weeks | — |
| Date Of Intro | — | — | — | — | 2017-01-11 | — |
| Access Time-Max | — | — | — | — | 150 ns | — |
| Command User Interface | — | — | — | — | NO | — |
| Data Polling | — | — | — | — | YES | — |
| Data Retention Time-Min | — | — | — | — | 10 | — |
| Endurance | — | — | — | — | 100000 Write/Erase Cycles | — |
| Memory Density | — | — | — | — | 65536 bit | — |
| Memory IC Type | — | — | — | — | EEPROM | — |
| Memory Width | — | — | — | — | 8 | — |
| Number of Ports | — | — | — | — | 1 | — |
| Number of Words | — | — | — | — | 8192 words | — |
| Number of Words Code | — | — | — | — | 8000 | — |
| Operating Mode | — | — | — | — | ASYNCHRONOUS | — |
| Organization | — | — | — | — | 8KX8 | — |
| Output Characteristics | — | — | — | — | 3-STATE | — |
| Page Size | — | — | — | — | 64 words | — |
| Parallel/Serial | — | — | — | — | PARALLEL | — |
| Programming Voltage | — | — | — | — | 5 V | — |
| Standby Current-Max | — | — | — | — | 0.0001 A | — |
| Supply Current-Max | — | — | — | — | 0.04 mA | — |
| Time@Peak Reflow Temperature-Max (s) | — | — | — | — | 30 | 30 |
| Toggle Bit | — | — | — | — | YES | — |
| Write Cycle Time-Max (tWC) | — | — | — | — | 10 ms | — |
| ## AT28C64B-15SU-T Alternates Showing results | — | — | — | — | Image | — |
| Number of Inputs | — | — | — | — | — | 2 |
| Schmitt Trigger | — | — | — | — | — | NO |
| ## SN74LS08DR Alternates Showing results | — | — | — | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Need pricing on these alternatives?
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Quick Links
Motorola Semiconductor Products LS Series, Inverted Output, TTL, CDIP16
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Why Look for Alternatives?
Finding alternatives for SN74LS138N is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating SN74LS138N replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to SN74LS138N?
Known equivalents for SN74LS138N include L6981NDR, SN54LS138J, SN74LS138NE4. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SN74LS138N?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify SN74LS138N alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.