Alternatives to Texas Instruments SN74HCT138PW
Texas Instruments SN74HCT138PW and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 SN74HCT138PWTexas Instruments | SN74HCT138PWRTexas Instruments |  74HCT138PW,118Nexperia USA Inc. | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Pins and TSSOP-16 footprint are identical to the original SN74HCT138PW.Matches the TSSOP-16 outline (4.4mm width, 0.65mm pitch) exactly.Performs the identical 3-to-8 line decoding with the same electrical parameters and timing. | The pinout and standard TSSOP-16 package matches the original part perfectly.Standard TSSOP-16 (SOT403-1) package dimensions are fully interchangeable.Features identical 3-to-8 decoding logic and matching HCT CMOS thresholds with TTL-compatible inputs. | ||
 AI Summary | SN74HCT138PW by Texas Instruments: Decoder/Demultiplexer 1 x 3:8 16-TSSOP. | This is the direct replacement from Texas Instruments. It is identical to the obsolete SN74HCT138PW in every physical and electrical aspect, with the only difference being the packaging type (Tape & Reel instead of Tube).
| A direct drop-in second-source replacement from Nexperia. This component is fully active, matches the original electrical thresholds, and offers an upgraded maximum operating temperature of 125°C.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Decoder/Demultiplexer 1 x 3:8 16-TSSOP | Decoder/Demultiplexer 1 x 3:8 16-TSSOP | Decoder/Demultiplexer 1 x 3:8 16-TSSOP | |
| Manufacturer | Texas Instruments | Texas Instruments | Nexperia USA Inc. | |
| Type | Logic | Logic | Logic | |
| Datasheet | Open | Open | Open | |
| Lead Time | 6 weeks | 16 weeks | 24 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0070 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Type | Decoder/Demultiplexer | - | - | |
| Circuit | 1 x 3:8 | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) | - | - | |
| Voltage - Supply | 4.5V ~ 5.5V | - | - | |
| Independent Circuits | 1 | - | - | |
| Operating Temperature | -40°C ~ 85°C | - | - | |
| Voltage Supply Source | Single Supply | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 SN74HCT138DTexas Instruments | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 SN74HCT541PWTexas Instruments | In stock | Obsolete | 5Alternatives availableSee Alternatives |
| SN74HC138DTexas Instruments | In stock | Obsolete | 4Alternatives availableSee Alternatives |
| SN74AHCT541PWTexas Instruments | In stock | Obsolete | 4Alternatives availableSee Alternatives |
| SN74HCT541PWTTexas Instruments | In stock | Obsolete | 3Alternatives availableSee Alternatives |
 SN74AHC32PWTexas Instruments | In stock | Obsolete | 5Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Texas Instruments SN74HCT138PW is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the Texas Instruments SN74HCT138PW are the SN74HCT138PWR (Texas Instruments) and the 74HCT138PW,118 (Nexperia USA Inc.), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the SN74HCT138PW are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The SN74HCT138PW (Texas Instruments) is a part in the Logic category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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