74LS377 Octal D Register Common Enable
Package PDIP, SOIC Series 74LS
74LS377 overview
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. 74LS377 is an 8-bit register built using advanced Low Power Schottky technology. 74LS377 monolithic, positive-edge triggered flip-flops utilize TTL circuitry to implement D-type flip-flop logic with an enable input.
Datasheet
377.pdf
74LS377 features
- Eight D-Type Flip-Flops with Common Clock
- Positive Edge Triggered Flip-Flops
- Fully Buffered Enable Inputs
- Operating Temperature up to 70°C
- Standard TTL Switching Voltages
74LS377 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | E | Enable Pin |
| 2 | Q0 | Output Bit 0 Of Register |
| 3 | D0 | Data Input Pin 0 Of Register |
| 4 | D1 | Data Input Pin 1 Of Register |
| 5 | Q1 | Output Bit 1 Of Register |
| 6 | Q2 | Output Bit 2 Of Register |
| 7 | D2 | Data Input Pin 2 Of Register |
| 8 | D3 | Data Input Pin 3 Of Register |
| 9 | Q3 | Output Bit 3 Of Register |
| 10 | GND | Ground |
| 11 | CP | Clock Pulse |
| 12 | Q4 | Output Bit 4 Of Register |
| 13 | D4 | Data Input Pin 4 Of Register |
| 14 | D5 | Data Input Pin 5 Of Register |
| 15 | Q5 | Output Bit 5 Of Register |
| 16 | Q6 | Output Bit 6 Of Register |
| 17 | D6 | Data Input Pin 6 Of Register |
| 18 | D7 | Data Input Pin 7 Of Register |
| 19 | Q7 | Output Bit 7 Of Register |
| 20 | VCC | Positive Supply |
74LS377 applications
- The main application of register is storing data in digital form.
- They also can hold data and address.
- The registers are also used to make digital memory chips like ROM Chips, Flash Memory etc.
- Cache memory in CPU is also made by registers
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