Part A
74ACT04SCX
onsemi
- Lifecycle
- Active
- Stock
- 7773 PCS
- Package
- SOIC-14
- Series
- Logic - Gates and Inverters
Replacement verdict
Not a drop-in replacement
The 74ACT04SCX and 74ACT11139DRE4 are functionally distinct devices that cannot serve as substitutes for one another. The 74ACT04SCX is a hex inverter, while the 74ACT11139DRE4 is a dual 2-to-4 line decoder/demultiplexer. Their logic functions, pin configurations, and channel counts differ fundamentally, making direct replacement infeasible without significant circuit redesign.
Different logic function
Different channel count
Different pinout
Different output configuration
Parts at a glance
Part B
74ACT11139DRE4
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 6506 PCS
- Package
- SOIC-16
- Series
- Logic - Signal Switches, Multiplexers, Decoders
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 74ACT04SCX | 74ACT11139DRE4 | Why it matters |
|---|---|---|---|
| Logic Function | Hex Inverter | Dual 2-to-4 Line Decoder/Demultiplexer | The logic function defines the fundamental operation of the device; different functions are not functionally substitutable. |
| Number of Circuits | 6 | 2 | The number of independent circuits determines how many signal paths the device can process simultaneously. |
| Number of Inputs per Circuit | 1 | 2 | Input count per circuit affects the logic complexity and the device's role in a circuit. |
| Number of Outputs per Circuit | 1 | 4 | Output count per circuit determines how many loads or signal destinations the device can drive. |
| Supply Voltage Range | 4.5 V to 5.5 V | 4.5 V to 5.5 V | The supply voltage range must match the system power rail for proper operation and compatibility. |
| Output Current (High/Low) | ±24 mA | ±24 mA | Output drive current determines the ability to drive loads and interface with other logic families. |
| Propagation Delay | 8.5 ns at 5 V | 10.5 ns at 5 V | Propagation delay affects timing margins and maximum operating frequency in synchronous systems. |
| Package Type | SOIC-14 | SOIC-16 | Package type and pin count must match the PCB footprint for physical compatibility. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | The operating temperature range ensures reliable performance in the target environment. |
| Logic Family | ACT | ACT | The logic family determines input/output voltage thresholds and compatibility with other logic devices. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 74ACT04SCX | 74ACT11139DRE4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | 74ACT | 74ACT |
| Part Status | Active | Obsolete |
| Type | - | Decoder/Demultiplexer |
| Circuit | - | 1 x 2:4 |
| Independent Circuits | - | 2 |
| Current - Output High Low | 24mA, 24mA | 24mA, 24mA |
| Voltage Supply Source | - | Single Supply |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Logic Type | Inverter | - |
| Number of Circuits | 6 | - |
| Number of Inputs | 1 | - |
| Current - Quiescent (Max) | 4 µA | - |
| Logic Level - Low | 0.8V | - |
| Logic Level - High | 2V | - |
| Max Propagation Delay @ V Max CL | 8.5ns @ 5V, 50pF | - |