The 74LS154 design is made in light of the chip to be used in high-performance memory-decoding or data-routing applications, requiring very short propagation delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. The output of the IC always comes in TTL which makes it easy to work with other TTL devices and microcontrollers. The IC 74LS154 is smaller in size and it has a much faster speed which makes it reliable in every kind of device.
What is a Decoder/Demultiplexer?
A Demultiplexer is a data distributor, it takes one single input data line and distributes it to any one of a number of individual output lines one at a time. Demultiplexing is the process of converting a signal containing multiple analog or digital signals backs into the original and separate signals.
74LS154 Pinout
74LS154 Pin Configuration
| 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 Pin |
| 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 G1 |
| 19 | G2 | Strobe Input G2 |
| 20 | D | Input Pin D |
| 21 | C | Input Pin C |
| 22 | B | Input Pin B |
| 23 | A | Input Pin A |
| 24 | Vcc | Chip Supply Voltage |
74LS154 Features & Specifications
- Input clamping diodes simplify system design
- High fan-out, low-impedance, totem-pole outputs
- Technology Family: LS
- Rating: Catalog
- Supply voltage: 4.75V to 5.5V
- Frequency at nominal voltage: 35 MHz
- Typical propagation delay: 21nS
- Low power consumption: 32mW
- Operating temperature: 0ºC to 70ºC
- ESD protection
- Balanced propagation delays
- Designed specifically for high speed
- IOL (Max): 8mA
- IOH (Max): -0.4mA
- Bits (#): 4
- Channels (#): 2
- Configuration: 4:16
- Product type: Standard
- Typical power dissipation 45 mW
Applications
- Serves the function of Speed synchronization of multiple motors in industries.
You can download this Datasheet for 74LS154 4-Bit Binary Decoder/Demultiplexer from the link given below:
See Also: 74LS92 4-Bit Divide By Twelve Binary Counter IC | 7404 NOT Gate IC | 74LS48 BCD-to-7 Segment Decoder/Driver IC
