The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC. 74LS154 4-line-to-16-line decoders utilize TTL circuitry to decode four binary-coded inputs into one of sixteen mutually exclusive outputs when both the strobe inputs, G1, and G2 are LOW.
74LS154 Features
- Decodes 4 binary-coded inputs into one of 16 mutually exclusive outputs
- Performs the demultiplexing function by distributing data from one input line to any one of 16 outputs
- Input clamping diodes simplify system design
- High fan-out, low-impedance, totem-pole outputs
- Typical power dissipation 45 mW
74LS154 Specifications
| Supply Voltage | 4.75 – 5.25Vdc |
| Maximum Clock Frequency | 40Mhz |
| Power Dissipation | 2mW/gate @100kHz |
| Minimum Output Current | 8mA |
| Propagation Delay | 10nS |
| Fan Out (TTL Loads) | 20 |
74LS154 Pinout Diagram
74LS154 Pin Description
| Pin No | Pin Name | Description |
| 1 | 0 | Output Pin 0 |
| 2 | 1 | Output Pin 1 |
| 3 | 2 | Output Pin 2 |
| 4 | 3 | Output Pin 3 |
| 5 | 4 | Output Pin 4 |
| 6 | 5 | Output Pin 5 |
| 7 | 6 | Output Pin 6 |
| 8 | 7 | Output Pin 7 |
| 9 | 8 | Output Pin 8 |
| 10 | 9 | Output Pin 9 |
| 11 | 10 | Output Pin 10 |
| 12 | GND | Ground |
| 13 | 11 | Output Pin 11 |
| 14 | 12 | Output Pin 12 |
| 15 | 13 | Output Pin 13 |
| 16 | 14 | Output Pin 14 |
| 17 | 15 | Output Pin 15 |
| 18 | G1 | Strobe Input Pin G1 |
| 19 | G2 | Strobe Input Pin G2 |
| 20 | D | Data Input Pin D |
| 21 | C | Data Input Pin C |
| 22 | B | Data Input Pin B |
| 23 | A | Data Input Pin A |
| 24 | VCC | Positive Supply |
74LS154 Circuit
Applications
- Connect a single source to multiple destinations
74LS154 Alternative Equivalent
74LS137,
Download 74LS154 4 to 16 Line Decoder/Demultiplexer Datasheet from the link given below.
