74LS49 BCD to 7-Segment Decoder IC DIP-14
The 74LS49 is a low-power Schottky TTL BCD-to-7-segment decoder designed to accept a 4-bit BCD input and provide seven output signals for driving the individual segments of a 7-segment display. It is commonly used to simplify the interface between digital logic circuits and numeric LED displays, eliminating the need for separate logic gates for segment decoding.
The IC includes control functions that allow flexible display operation, making it suitable for numeric indicators and digital display circuits. Its DIP-14 through-hole package makes it convenient for breadboards, prototypes, educational projects, and conventional PCB assembly.
Features:
- BCD-to-7-segment decoding.
- Seven segment-control outputs.
- TTL logic operation.
- Designed for numeric display applications.
- Low-power Schottky logic technology.
- Direct interface with compatible 7-segment displays.
- Built-in logic for segment decoding.
- Through-hole DIP package.
- Suitable for digital display circuits.
Specifications:
| Specification | Value |
|---|---|
| Function | Decoder, Demultiplexer |
| Technology Family | LS |
| Channels | 1 |
| Configuration | 4:7 |
| Nominal Voltage | 5V |
| VCC (Min) | 4.75V |
| VCC (Max) | 5.25V |
| Maximum Frequency | 35MHz |
| Propagation Delay (tpd) | 100ns max. |
| Operating Temperature Range | -20°C to +70°C |
74LS49 Pinout:
| Pin No. | Pin Name | Description |
|---|---|---|
| 1 | B | BCD input of the IC |
| 2 | C | BCD input of the IC |
| 3 | BI | Blanking input |
| 4 | D | BCD input of the IC |
| 5 | A | BCD input of the IC |
| 6 | e | 7 segment output 1 |
| 7 | GND | Ground |
| 8 | d | 7 segment output 2 |
| 9 | c | 7 segment output 3 |
| 10 | b | 7 segment output 4 |
| 11 | a | 7 segment output 5 |
| 12 | g | 7 segment output 6 |
| 13 | f | 7 segment output 7 |
| 14 | Vcc | Chip Supply Voltage |
Applications:
- 7-segment numeric displays.
- Digital counters.
- Digital clocks.
- Frequency counters.
- Electronic measuring instruments.
- Numeric control panels.
- Calculator circuits.
- Digital meters.
- Industrial display systems.
- Educational digital logic projects.
Packages Included:
- 1 × 74LS49 BCD to 7-Segment Decoder IC DIP-14.
