SN74LS138DRAlternatives & Equivalent Parts
About SN74LS138DR
SN74LS138DR is a Integrated Circuit component manufactured by Texas Instruments. It comes in a Small Outline Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
Specification Comparison
| Parameter | SN74LS138DRSource | SN74LS138D | AD598JRZ | SN74LS245NS | SN74LS148D | SN74LS148DG4 |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Analog Devices | Texas Instruments | Texas Instruments | Texas Instruments |
| Package Type | Small Outline Packages | Small Outline Packages | Small Outline Packages | Small Outline Packages | Small Outline Packages | Small Outline Packages |
| Pin Count | 16 | 16 | 20 | 20 | 16 | 16 |
| Temperature Range | ~ 70.0°C | ~ 70.0°C | ~ 70.0°C | — | ~ 70.0°C | ~ 70.0°C |
| Price | $0.3410 | $0.0853 | $45.4500 | — | $0.7074 | $0.8450 |
| Electrical Parameters | ||||||
| Pbfree Code | Yes | Yes | No | — | — | — |
| YTEOL | 15 | 15 | 10 | — | 0 | 0 |
| Additional Feature | 3 ENABLE INPUTS | 3 ENABLE INPUTS | — | — | 8 TO 3 LINE PRIORITY ENCODER; CASCADABLE; WITH GROUP SELECT OUTPUT | 8 TO 3 LINE PRIORITY ENCODER; CASCADABLE; WITH GROUP SELECT OUTPUT |
| Family | LS | LS | — | — | LS | LS |
| Input Conditioning | STANDARD | STANDARD | — | — | — | — |
| JESD-30 Code | R-PDSO-G16 | R-PDSO-G16 | R-PDSO-G20 | — | R-PDSO-G16 | R-PDSO-G16 |
| JESD-609 Code | e4 | e4 | e3 | — | e4 | 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 | — | — | ENCODER | ENCODER |
| Max I(ol) | 0.008 A | 0.008 A | — | — | 0.008 A | — |
| Number of Bits | 8 | 8 | — | — | 8 | 8 |
| Number of Functions | 1 | 1 | 1 | — | 1 | 1 |
| Output Polarity | INVERTED | INVERTED | — | — | INVERTED | INVERTED |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | — | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 | SOP16,.25 | SOP20,.4 | — | SOP16,.25 | SOP16,.25 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | — | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | — | SMALL OUTLINE | SMALL OUTLINE |
| Packing Method | TR | TUBE | — | — | TUBE | TUBE |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 | — | 260 | 260 |
| Power Supply Current-Max (ICC) | 10 mA | 10 mA | — | — | 10 mA | 60 mA |
| Prop. Delay@Nom-Sup | 41 ns | 41 ns | — | — | 19 ns | — |
| Propagation Delay (tpd) | 41 ns | 41 ns | — | — | 36 ns | 36 ns |
| Qualification Status | Not Qualified | Not Qualified | — | — | Not Qualified | Not Qualified |
| Supply Voltage-Max (Vsup) | 5.25 V | 5.25 V | — | — | 5.25 V | 5.25 V |
| Supply Voltage-Min (Vsup) | 4.75 V | 4.75 V | — | — | 4.75 V | 4.75 V |
| Supply Voltage-Nom (Vsup) | 5 V | 5 V | — | — | 5 V | 5 V |
| Surface Mount | YES | YES | YES | — | YES | YES |
| Technology | BIPOLAR | BIPOLAR | — | — | TTL | TTL |
| Temperature Grade | COMMERCIAL | COMMERCIAL | — | — | COMMERCIAL | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | Nickel/Palladium/Gold (Ni/Pd/Au) | Matte Tin (Sn) | — | Nickel/Palladium/Gold (Ni/Pd/Au) | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING | GULL WING | GULL WING | — | GULL WING | GULL WING |
| Terminal Pitch | 1.27 mm | 1.27 mm | 1.27 mm | — | 1.27 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL | DUAL | — | DUAL | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | 30 | — | 30 | 30 |
| ## SN74LS138DR Alternates Showing results | Image | — | — | — | — | — |
| ## SN74LS138D Alternates Showing results | — | Image | — | — | — | — |
| Manufacturer Package Code | — | — | RW-20 | — | — | — |
| Interface IC Type | — | — | SIGNAL CONDITIONER | — | — | — |
| Supply Voltage-Min | — | — | 13 V | — | — | — |
| Supply Voltage-Nom | — | — | 15 V | — | — | — |
| ## SN74LS148D Alternates Showing results | — | — | — | — | Image | — |
| ## SN74LS148DG4 Alternates Showing results | — | — | — | — | — | Image |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
Quick Links
onsemi LS Series, Inverted Output, TTL, PDSO16
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Why Look for Alternatives?
Finding alternatives for SN74LS138DR 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 SN74LS138DR 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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Request Alternatives for SN74LS138DRFAQ
What is equivalent to SN74LS138DR?
Known equivalents for SN74LS138DR include SN74LS138D, AD598JRZ, SN74LS245NS. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of SN74LS138DR?
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 SN74LS138DR 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.