Overview
The SN74LS595NS, manufactured by Texas Instruments, is a high-speed 8-bit serial-in, parallel-out shift register with output latches. It is designed to convert serial data into parallel data, making it ideal for applications requiring data expansion or control signal generation. This component is widely used in digital electronics, including LED displays, industrial control systems, and microcontroller-based projects. Its key selling points include its ability to cascade multiple devices, high-speed operation, and compatibility with TTL logic levels.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Logic Type | Shift Register | - | 8-bit serial-in, parallel-out |
| Output Type | 3-State | - | High-impedance output when disabled |
| Supply Voltage | 4.75 to 5.25 | V | TTL compatible |
| Operating Temperature | 0 to 70 | °C | Commercial grade |
| Package | SOIC-16 | - | Surface mount |
| Shift Frequency | Up to 100 | MHz | High-speed operation |
| Input Logic Levels | TTL | - | Compatible with TTL logic |
| Cascadable | Yes | - | Supports multiple devices in series |
Key Features
- 8-bit serial input with parallel output.
- 3-state output for bus compatibility.
- Separate clocks for shift register and storage register.
- Cascadable for expanding data width.
- High-speed operation up to 100 MHz.
- TTL-compatible input and output levels.
Applications
The SN74LS595NS is widely used in various digital systems. In LED displays, it simplifies the control of multiple LEDs by converting serial data into parallel outputs. In industrial automation, it is used for signal distribution and control. It is also commonly employed in microcontroller projects for expanding GPIO pins, enabling control of more devices with limited I/O resources. Additionally, it finds applications in gaming consoles, digital clocks, and other consumer electronics requiring efficient data handling.
Q & A
1. What is the primary function of the SN74LS595NS?
The SN74LS595NS is an 8-bit serial-in, parallel-out shift register with output latches, designed to convert serial data into parallel data for expanded control or signal generation.
2. Can the SN74LS595NS be cascaded with other devices?
Yes, the SN74LS595NS supports cascading, allowing multiple devices to be connected in series for expanding the data width.
3. What is the maximum shift frequency of the SN74LS595NS?
The SN74LS595NS can operate at shift frequencies up to 100 MHz, making it suitable for high-speed applications.
4. Is the SN74LS595NS compatible with TTL logic levels?
Yes, the SN74LS595NS is fully compatible with TTL logic levels for both input and output.
5. What is the operating voltage range of the SN74LS595NS?
The SN74LS595NS operates within a supply voltage range of 4.75 to 5.25 volts.
6. What is the output type of the SN74LS595NS?
The SN74LS595NS features 3-state outputs, which can be set to a high-impedance state when not in use.
7. What is the typical application of the SN74LS595NS?
Typical applications include LED displays, industrial control systems, and microcontroller-based projects requiring GPIO expansion.
8. What is the package type of the SN74LS595NS?
The SN74LS595NS is available in an SOIC-16 package, designed for surface-mount applications.
9. Does the SN74LS595NS have separate clocks for shift and storage registers?
Yes, the SN74LS595NS has separate clocks for the shift register and the storage register, providing flexibility in data handling.
10. What is the operating temperature range of the SN74LS595NS?
The SN74LS595NS operates within a temperature range of 0 to 70 degrees Celsius, suitable for commercial-grade applications.
