Overview
The SN74LS155AN is a dual 2-line to 4-line decoder/demultiplexer produced by Texas Instruments. This monolithic transistor-transistor-logic (TTL) circuit is designed to provide dual 1-line-to-4-line demultiplexers with individual strobes and common binary-address inputs in a single 16-pin package. The device is part of the LS series and is known for its reliability and versatility in various digital circuit applications.
Key Specifications
| 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 |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| 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 decoders/demultiplexers in a single 16-pin package.
- Individual strobes simplify cascading for decoding or demultiplexing larger words.
- Input clamping diodes minimize transmission-line effects and simplify system design.
- Choice of outputs: Totem Pole ('155, 'LS155A) and Open-Collector ('156, 'LS156).
- Can be used as a 3-to-8-line decoder or 1-to-8-line demultiplexer without external gating.
- Operating temperature range from 0°C to 70°C.
- Supply voltage range from 4.75V to 5.25V.
Applications
- Dual 2-to 4-Line Decoder
- Dual 1-to 4-Line Demultiplexer
- 3-to 8-Line Decoder
- 1-to 8-Line Demultiplexer
- General digital circuit applications requiring decoding or demultiplexing functions.
Q & A
- What is the primary function of the SN74LS155AN?
The SN74LS155AN is 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) 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.
- Can the SN74LS155AN be used as a 3-to-8-line decoder or 1-to-8-line demultiplexer?
Yes, it can be used as a 3-to-8-line decoder or 1-to-8-line demultiplexer without external gating.
- What type of output characteristics does the SN74LS155AN have?
The SN74LS155AN has Totem Pole output characteristics.
- Does the SN74LS155AN have input clamping diodes?
Yes, it has input clamping diodes to minimize transmission-line effects and simplify system design.
- How many individual strobes does the SN74LS155AN have?
The SN74LS155AN has individual strobes for each of the 4-bit sections.
- Is the SN74LS155AN RoHS compliant?
Yes, it is compliant with EU RoHS, China RoHS, and REACH regulations.
- What is the propagation delay of the SN74LS155AN?
The propagation delay (tpd) is 30.0 ns.
