Part A
SN74AC04D
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 4053 PCS
- Package
- SOIC-14
- Series
- 로직 - 도어 및 인버터
Replacement verdict
Not a drop-in replacement
The SN74AC04D and SN74ABT16241ADLRG4 are functionally incompatible devices that cannot serve as substitutes for one another. The SN74AC04D is a hex inverter with six independent NOT gates in a 14-pin SOIC package, while the SN74ABT16241ADLRG4 is a 16-bit buffer/line driver with 3-state outputs in a 48-pin TSSOP package. They differ fundamentally in logic function, channel count, output type, and package footprint, making direct replacement impossible without complete circuit redesign.
Different logic function
Different channel count
Different output type
Different package footprint
Parts at a glance
Part B
SN74ABT16241ADLRG4
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 9184 PCS
- Package
- BSSOP-48
- Series
- 논리 - 버퍼, 드라이브, 수신기, 트랜시버
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | SN74AC04D | SN74ABT16241ADLRG4 | Why it matters |
|---|---|---|---|
| Logic Function | Hex Inverter (6 independent inverters) | 16-Bit Buffer/Line Driver (non-inverting, 3-state) | The two devices perform fundamentally different logic operations, so they are not functionally interchangeable in a circuit. |
| Logic Family | AC (Advanced CMOS) | ABT (Advanced BiCMOS Technology) | Different logic families have different input thresholds, drive strengths, and noise margins, affecting direct substitution. |
| Number of Channels | 6 | 16 | Channel count determines how many signal lines the device can handle, which is critical for bus and multi-signal applications. |
| Output Type | Push-Pull (totem-pole) | 3-State (tri-state) | 3-state outputs allow bus sharing by placing outputs in high-impedance mode, while push-pull outputs cannot be tied together. |
| Supply Voltage Range | 2.0 V to 6.0 V | 4.5 V to 5.5 V | The wider supply range of the AC device supports 3.3 V and 5 V systems, while the ABT device is limited to 5 V operation. |
| Propagation Delay (typical) | ~7 ns at 5 V | ~3.9 ns at 5 V | Faster propagation delay improves timing margins in high-speed digital systems. |
| Output Drive Current | ±24 mA | ±32 mA | Higher drive current allows the device to drive heavier loads and longer traces without additional buffering. |
| Package Type | SOIC-14 (D package) | SSOP-48 (DL package) | Different package footprints and pin counts prevent direct board-level replacement without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both devices support industrial temperature ranges, so thermal conditions are not a differentiator. |
| Input Type | CMOS | TTL-compatible | Input compatibility affects interfacing with upstream logic; TTL-compatible inputs allow direct connection to TTL outputs. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | SN74AC04D | SN74ABT16241ADLRG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Series | 74AC | 74ABT |
| Part Status | Active | Discontinued at Digi-Key |
| Logic Type | Inverter | Buffer, Non-Inverting |
| Number of Elements | - | 4 |
| Number of Bits per Element | - | 4 |
| Output Type | - | 3-State |
| Current - Output High Low | 24mA, 24mA | 32mA, 64mA |
| Voltage - Supply | 2V ~ 6V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Number of Circuits | 6 | - |
| Number of Inputs | 1 | - |
| Current - Quiescent (Max) | 2 µA | - |
| Logic Level - Low | 0.9V ~ 1.65V | - |
| Logic Level - High | 2.1V ~ 3.85V | - |
| Max Propagation Delay @ V Max CL | 7ns @ 5V, 50pF | - |
Frequently asked questions
What are the basic functional differences between the SN74AC04D and the SN74ABT16241ADLRG4?
The SN74AC04D is a hex inverter from the AC family, containing six independent inverter gates in a 14-pin SOIC package. The SN74ABT16241ADLRG4 is a 16-bit buffer/driver from the ABT family, containing sixteen non-inverting buffers with 3-state outputs in a 48-pin SSOP package. They differ in logic function, channel count, output type, and package.
Can the SN74AC04D and SN74ABT16241ADLRG4 be used interchangeably in a design?
No. The SN74AC04D provides inverting logic with six channels, while the SN74ABT16241ADLRG4 provides non-inverting buffering with sixteen channels and 3-state outputs. Pin counts, packages, logic polarity, and output structures are different, so they are not direct substitutes.
What are the recommended operating supply voltage ranges for these devices?
The SN74AC04D operates from 2 V to 6 V VCC. The SN74ABT16241ADLRG4 operates from 4.5 V to 5.5 V VCC. The SN74AC04D supports a wider low-voltage range, while the SN74ABT16241ADLRG4 is intended for 5 V systems.
Do both devices have 3-state outputs?
No. The SN74AC04D has standard push-pull outputs without a high-impedance state. The SN74ABT16241ADLRG4 has 3-state outputs controlled by output-enable (OE) pins, allowing the outputs to be placed in a high-impedance state for bus applications.
What are the package and pin count differences between the SN74AC04D and SN74ABT16241ADLRG4?
The SN74AC04D is supplied in a 14-pin SOIC (D) package. The SN74ABT16241ADLRG4 is supplied in a 48-pin SSOP (DL) package. The pin counts and package footprints are not compatible.
Are the output drive capabilities of the SN74AC04D and SN74ABT16241ADLRG4 the same?
No. The SN74AC04D typically provides ±24 mA output drive at 5 V VCC. The SN74ABT16241ADLRG4 typically provides ±32 mA output drive at 5 V VCC. The ABT device offers higher drive current per output.
Which device is better suited for bus-oriented applications?
The SN74ABT16241ADLRG4 is better suited for bus-oriented applications because it has 16 non-inverting channels with 3-state outputs that can be disabled to isolate the bus. The SN74AC04D is a general-purpose hex inverter without 3-state capability.
Do both devices support the same operating temperature range?
Both the SN74AC04D and SN74ABT16241ADLRG4 are specified for the industrial temperature range of –40°C to 85°C, based on their respective manufacturer datasheets.