The 74LS273 is a part of the 74XXYY IC series. 74LS273 is a high-speed 8-bit register, consisting of eight D-type flip-flops with a common Clock and an asynchronous active LOW Master Reset. This IC comes in a 20-pin package featuring 0.3″ row spacing. The 74LS273 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL. The information on the D inputs is stored during the LOW to HIGH clock transition. Both true and complemented outputs of each flip-flop are provided. The output of the IC always comes in a Push-Pull configuration which makes it easy to work with other TTL devices and microcontrollers.
What is a D-Type Flip-Flop?
A D-type flip-flop is a clocked flip-flop that has two stable states. A D-type flip-flop operates with a delay in input by one clock cycle. Thus, by cascading many D-type flip-flops delay circuits can be created, which are used in many applications such as in digital television systems. A D-type flip-flop is also known as a D flip-flop or a delay flip-flop.
74LS273 Pinout
74LS273 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | MR’ | Active Low Master Reset Input |
| 2 | Q0 | Register Output Pin Q0 |
| 3 | D0 | Data Input Pin D0 |
| 4 | D1 | Data Input Pin D1 |
| 5 | Q1 | Register Output Pin Q1 |
| 6 | Q2 | Register Output Pin Q2 |
| 7 | D2 | Data Input Pin D2 |
| 8 | D3 | Data Input Pin D3 |
| 9 | Q3 | Register Output Pin Q3 |
| 10 | GND | Ground Pin |
| 11 | CP | Clock Pulse Input |
| 12 | Q4 | Register Output Pin Q4 |
| 13 | D4 | Data Input Pin D4 |
| 14 | D5 | Data Input Pin D5 |
| 15 | Q5 | Register Output Pin Q5 |
| 16 | Q6 | Register Output Pin Q6 |
| 17 | D6 | Data Input Pin D6 |
| 18 | D7 | Data Input Pin D7 |
| 19 | Q7 | Register Output Pin Q7 |
| 20 | Vcc | Chip Supply Voltage |
74LS273 Features & Specifications
- Channels (#): 8
- Technology Family: LS
- VCC (Min): 4.75V
- VCC (Max): 5.25V
- Input type: Bipolar
- Edge Triggered
- Parallel In and Out
- Master Reset
- Standard TTL Switching Voltages
- Output type: Push-Pull
- Clock Frequency (Max): 35MHz
- IOL (Max): 8mA
- IOH (Max): -0.4mA
- ICC (Max): 27000uA
- Propagation speed: (tpd 10-50ns)
Applications
- It is commonly used in devices such as PCs, notebooks, Digital Electronic & Networking equipment, etc.
You can download this Datasheet for 74LS273 Octal D-Type Flip-Flop IC from the link given below:
See Also: 74LS164 8-Bit Shift Register IC With Parallel Outputs – Datasheet | 74LS150 16-1 Data Selector Multiplexer IC – Datasheet | 74LS132 Quad 2-Input Schmitt trigger NAND Gate IC – Datasheet
