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74AHC138S16-13 Equivalent & Substitute Parts
Part Overview
The 74AHC138S16-13 is a Decoder/Demultiplexer logic IC manufactured by Diodes Incorporated, featuring a 1 x 3:8 circuit configuration in a 16-SOIC surface mount package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are necessary to address supply chain variations, manufacturer discontinuation, or specific operational temperature and packaging requirements across different application environments.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Part Number | 74AHC138S16-13 |
| Manufacturer | Diodes Incorporated |
| Type | Decoder/Demultiplexer |
| Circuit Configuration | 1 x 3:8 |
| Package | 16-SOIC (0.154", 3.90mm Width) |
| Voltage Supply | 2V ~ 5.5V |
| Output Current (High/Low) | 8mA / 8mA |
| Operating Temperature | -40°C ~ 125°C |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the 74AHC138S16-13 is determined by the following critical parameters: decoder/demultiplexer circuit type with 1 x 3:8 configuration, 16-SOIC package format, single supply voltage range of 2V to 5.5V, output current capability of 8mA for both high and low states, and surface mount mounting type. All substitute parts listed maintain these core electrical and mechanical specifications. Operating temperature range variations and product status differences are noted but do not prevent functional substitution when application requirements permit. RoHS3 compliance and MSL rating of 1 are maintained across all listed alternatives.
Parameter Comparison
| Part Number | Manufacturer | Series | Circuit | Package | Voltage Supply | Output Current (mA) | Operating Temp (°C) | Product Status | RoHS3 |
|---|---|---|---|---|---|---|---|---|---|
| 74AHC138S16-13 | Diodes Incorporated | 74AHC | 1 x 3:8 | 16-SOIC | 2V ~ 5.5V | 8 / 8 | -40 ~ 125 | Active | Yes |
| 74VHC138MX | onsemi | 74VHC | 1 x 3:8 | 16-SOIC | 2V ~ 5.5V | 8 / 8 | -40 ~ 85 | Active | Yes |
| MC74VHC138DR2G | onsemi | 74VHC | 1 x 3:8 | 16-SOIC | 2V ~ 5.5V | 8 / 8 | -55 ~ 125 | Active | Yes |
| SN74AHC138DR | Texas Instruments | 74AHC | 1 x 3:8 | 16-SOIC | 2V ~ 5.5V | 8 / 8 | -40 ~ 85 | Active | Yes |
| MC74VHC138DG | onsemi | 74VHC | 1 x 3:8 | 16-SOIC | 2V ~ 5.5V | 8 / 8 | -55 ~ 125 | Obsolete | Yes |
| SN74AHC138D | Texas Instruments | 74AHC | 1 x 3:8 | 16-SOIC | 2V ~ 5.5V | 8 / 8 | -40 ~ 85 | Discontinued | Yes |
| 74AHC138D,118 | NXP Semiconductors | 74AHC | 1 x 3:8 | 16-SOIC | 2V ~ 5.5V | 8 / 8 | -40 ~ 125 | Active | Yes |
| 74AHC138D-Q100J | Nexperia USA Inc. | 74AHC | 1 x 3:8 | 16-SOIC | 2V ~ 5.5V | 8 / 8 | -40 ~ 125 | Active | Yes |
Engineering Selection Recommendations
For applications requiring the full -40°C to 125°C operating temperature range, select from Active status parts: 74AHC138S16-13 (Diodes Incorporated), MC74VHC138DR2G (onsemi), 74AHC138D,118 (NXP Semiconductors), or 74AHC138D-Q100J (Nexperia USA Inc.). The 74AHC138D-Q100J includes AEC-Q100 automotive qualification and is suitable for automotive-grade applications. For applications limited to -40°C to 85°C operating range, 74VHC138MX (onsemi), SN74AHC138DR (Texas Instruments), and SN74AHC138D (Texas Instruments) are available. Avoid MC74VHC138DG and SN74AHC138D due to Obsolete and Discontinued product status respectively, unless existing inventory is confirmed available. All listed parts maintain identical electrical specifications, package format, and RoHS3 compliance.
Frequently Asked Questions (FAQ)
Q: Can 74VHC138MX replace 74AHC138S16-13 in all applications? A: 74VHC138MX is electrically equivalent and uses the same 16-SOIC package. The operating temperature range differs: 74VHC138MX operates -40°C to 85°C versus 74AHC138S16-13 at -40°C to 125°C. Substitution is valid only if application maximum operating temperature does not exceed 85°C.
Q: What is the difference between 74AHC and 74VHC series parts? A: Both series are decoder/demultiplexer logic ICs with identical circuit configuration (1 x 3:8), voltage supply range (2V to 5.5V), and output current specifications (8mA). Series designation reflects different manufacturer product lines. Electrical performance and pinout are compatible.
Q: Is the 74AHC138D-Q100J suitable for automotive applications? A: Yes. The 74AHC138D-Q100J carries AEC-Q100 qualification and automotive-grade designation, making it suitable for automotive applications requiring this certification. Other parts listed do not include automotive qualification.
Q: Why are SN74AHC138D and MC74VHC138DG listed if they are discontinued or obsolete? A: These parts are included for reference and historical compatibility documentation. SN74AHC138D is Discontinued at DiGi Electronics; MC74VHC138DG is Obsolete. Use only if existing inventory is confirmed and supply chain continuity is not a concern.
Q: Do all substitute parts use the same pinout? A: All listed parts use the 16-SOIC package format with identical pin configuration. Direct board-level substitution is possible without layout modification.
Q: What is the significance of MSL rating 1 (Unlimited)? A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. All listed parts maintain this rating, ensuring consistent handling and storage procedures across substitutes.
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