Overview
The SN74LS155AN is a dual 2-line to 4-line decoder/demultiplexer integrated circuit produced by Texas Instruments. It belongs to the LS series and is known for its true output and TTL (Transistor-Transistor Logic) technology. This component is packaged in a 16-pin DIP (Dual In-Line Package) and is widely used in digital logic circuits for decoding and demultiplexing applications.
Key Specifications
| Specification | Value |
|---|---|
| Mfr Package Description | DIP-16 |
| REACH Compliant | Yes |
| EU RoHS Compliant | Yes |
| China RoHS Compliant | Yes |
| Status | Active |
| Logic IC Type | OTHER DECODER/DRIVER |
| Sub Category | Decoder/Drivers |
| Family | LS |
| Input Conditioning | STANDARD |
| Load Capacitance (CL) | 15.0 pF |
| Max I(ol) | 0.008 Amp |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Number of Terminals | 16 |
| Operating Temperature-Min | 0.0 Cel |
| Operating Temperature-Max | 70.0 Cel |
| Output Characteristics | TOTEM POLE |
| Output Polarity | TRUE |
| Package Body Material | PLASTIC/EPOXY |
| Package Code | DIP |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 10.0 mA |
| Prop. Delay@Nom-Sup | 27.0 ns |
| Propagation Delay (tpd) | 30.0 ns |
| Qualification Status | Not Qualified |
| Seated Height-Max | 5.08 mm |
| Supply Voltage-Nom (Vsup) | 5 |
| Supply Voltage-Min (Vsup) | 4.75 V |
| Supply Voltage-Max (Vsup) | 5.25 V |
| Surface Mount | NO |
| Technology | TTL |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54 mm |
| Terminal Position | DUAL |
| Length | 19.305 mm |
| Width | 7.62 mm |
| Additional Feature | USABLE AS 1 TO 8 DEMULTIPLEXER |
Key Features
- Dual 2-line to 4-line decoder/demultiplexer functionality.
- True output TTL logic.
- 16-pin DIP package.
- Operating temperature range: 0°C to 70°C.
- Supply voltage range: 4.75V to 5.25V.
- Low propagation delay of 27ns to 30ns.
- High noise immunity due to TTL technology.
- Usable as a 1 to 8 demultiplexer.
- Compliant with REACH, EU RoHS, and China RoHS regulations.
Applications
The SN74LS155AN is versatile and can be used in various digital logic circuits, including:
- Decoding applications where two input lines need to be decoded into four output lines.
- Demultiplexing applications where a single input line needs to be routed to one of four possible output lines based on the state of two select lines.
- Data routing and switching in digital systems.
- Control circuits in industrial automation and consumer electronics.
Q & A
- What is the primary function of the SN74LS155AN?
The primary function of the SN74LS155AN is to act as a dual 2-line to 4-line decoder/demultiplexer. - What package type does the SN74LS155AN come in?
The SN74LS155AN comes in a 16-pin DIP (Dual In-Line Package). - What is the operating temperature range of the SN74LS155AN?
The operating temperature range is from 0°C to 70°C. - What is the supply voltage range for the SN74LS155AN?
The supply voltage range is from 4.75V to 5.25V. - Is the SN74LS155AN RoHS compliant?
Yes, the SN74LS155AN is compliant with EU RoHS, China RoHS, and REACH regulations. - What is the propagation delay of the SN74LS155AN?
The propagation delay is between 27ns and 30ns. - Can the SN74LS155AN be used as a demultiplexer?
Yes, it can be used as a 1 to 8 demultiplexer. - What technology does the SN74LS155AN use?
The SN74LS155AN uses TTL (Transistor-Transistor Logic) technology. - What is the maximum power supply current for the SN74LS155AN?
The maximum power supply current is 10.0 mA. - Is the SN74LS155AN suitable for surface mount applications?
No, it is not suitable for surface mount applications; it uses through-hole terminals.
