Texas Instruments SN74HCT138DT Microcontrollers
3-to-8 Line Decoder/Demultiplexer, 5V, 45ns, SOIC
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
SN74HCT138DT
Series
Base Model
Detailed Description
3-to-8 Line Decoder/Demultiplexer, 5V, 45ns, SOIC
Package
16-SOIC (0.154", 3.90mm Width)
Lifecycle Status
Active
Datasheet
SN74HCT138DT Datasheet
Quick Jump:
Technical Specifications
Texas Instruments SN74HCT138DT Microcontrollers technical specifications.
General
Package / Case
16-SOIC
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C
Supply Voltage
4.5V ~ 5.5V
Lifecycle Status
Active
Type
Decoder/Demultiplexer
Voltage Supply Source
Single Supply
Current Output High Low
4mA, 4mA
Circuit
1 x 3:8
Independent Circuits
1
Alternate Parts Comparison (SN74HCT138DT vs SN74HCT00PWR vs SN74HCT08ANSR vs SN74HCT04DRE4)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 16-SOIC | TSSOP | SOP | 14-SOIC |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Supply Voltage | 4.5V ~ 5.5V | 5 V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Lifecycle Status | Active | Active | Obsolete | Active |
| Current Output High Low | 4mA, 4mA | 4mA, 4mA | 4mA, 4mA | 4mA, 4mA |
| Current Quiescent Max | -- | 2 µA | 2 µA | 2 µA |
| Logic Level High | -- | 2 V | 3.98V ~ 4.4V | 2V |
| Logic Level Low | -- | 0.8 V | 0.1V ~ 0.26V | 0.8V |
| Logic Type | -- | NAND Gate | AND Gate | Inverter |
| Max Propagation Delay V Max Cl | -- | 18ns @ 5.5V, 50pF | 18ns @ 5.5V, 50pF | 18ns @ 5.5V, 50pF |
| Number of Circuits | -- | 4 | 4 | 6 |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
MC74VHCT138ADR2GonsemiDirectonsemi
Pin YesPkg YesElec Yes
3-to-8 Line Decoder IC, SOIC, CMOS, 3V-5.5V
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