Overview
The SN74HC595N from Texas Instruments is an 8-bit serial-in, parallel-out shift register with 3-state output registers. This integrated circuit is designed to operate within a wide voltage range of 2V to 6V, making it versatile for various electronic applications. It is particularly useful in digital electronics for data storage, transfer, and manipulation, and is known for its ability to drive up to 15 LSTTL loads. The SN74HC595N features low power consumption, fast propagation delay, and high-current 3-state outputs, which are essential for efficient data handling in high-speed digital circuits.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | Texas Instruments (TI) | Original manufacturer of the IC |
| Part Number | SN74HC595N | Serial-in, parallel-out shift register |
| Logic Family | HC (High-Speed CMOS) | CMOS technology for high performance |
| Number of Outputs | 8 | 8-bit serial to parallel output |
| Operating Voltage | 2V to 6V | Recommended supply voltage range |
| Max Clock Frequency | 25 MHz | Maximum operating clock frequency |
| Output Type | Tri-State | Outputs can be in high-impedance state |
| Input Voltage (High) | 2V - 6V | High-level input voltage |
| Input Voltage (Low) | 0V - 1.5V | Low-level input voltage |
| Propagation Delay | 13 ns (typical) | Time delay between input and output |
| Max Output Current | ±35 mA per pin | Maximum output drive current |
| Operating Temperature | -40°C to 85°C | Industrial temperature range |
| Power Consumption | Low power consumption | Typical CMOS low-power design |
| Package Type | DIP-16 (N Package) | Dual Inline Package with 16 pins |
| Latch Enable (LE) | Supported | Control for output latch operation |
| Serial Data In (DS) | Supported | Serial data input functionality |
| RoHS Compliant | Yes | Environmentally friendly component |
Key Features
- 8-Bit Serial-In, Parallel-Out Shift Register: Facilitates efficient data handling and output by accepting data serially and outputting it in parallel.
- Wide Operating Voltage Range: Functions seamlessly across 2 V to 6 V, allowing flexibility in different electronic applications.
- High-Current 3-State Outputs: Capable of driving up to 15 LSTTL loads and providing a ±6-mA drive at 5 V.
- Low Power Consumption: Maximum ICC of 80 µA ensures energy efficiency, making it suitable for battery-powered devices.
- Fast Propagation Delay: Typical propagation delay of 13 ns for rapid performance.
- Minimal Input Current: Input current remains under 1 µA, reducing overall power usage.
- Direct Clear on Shift Register: Enables quick reset functionality through an active-low master reset (MR).
- Separate Clocks for Shift and Storage Registers: Facilitates efficient data management by allowing separate control over the shift and storage registers.
- Output Enable (OE) Input: When high, the outputs are in a high-impedance state, allowing for versatile application in various electronic designs.
Applications
The SN74HC595N is widely used in various digital electronics applications due to its versatile features. Here are some key applications:
- Expanding I/O Capabilities of Microcontrollers: It helps in controlling multiple outputs with a limited number of microcontroller pins, making it essential for projects where I/O expansion is necessary.
- Data Serialization and Deserialization: Useful in applications requiring serial-to-parallel or parallel-to-serial conversion of data, such as in communication protocols.
- LED Displays and Lighting Systems: Often used in simple LED displays and more complex lighting systems due to its ability to drive multiple LEDs efficiently.
- Network Switches and Power Infrastructure Projects: Its high-current 3-state outputs and low power consumption make it suitable for more complex digital systems and power infrastructure projects.
Q & A
- What is the operating voltage range of the SN74HC595N?
The SN74HC595N operates within a voltage range of 2V to 6V.
- How many LSTTL loads can the SN74HC595N drive?
The SN74HC595N can drive up to 15 LSTTL loads.
- What is the typical propagation delay of the SN74HC595N?
The typical propagation delay is 13 ns.
- Does the SN74HC595N support separate clocks for shift and storage registers?
Yes, it supports separate clocks for both the shift and storage registers.
- What is the maximum clock frequency of the SN74HC595N?
The maximum clock frequency is 25 MHz.
- Is the SN74HC595N RoHS compliant?
Yes, the SN74HC595N is RoHS compliant.
- What is the package type of the SN74HC595N?
The package type is DIP-16 (Dual Inline Package with 16 pins).
- How does the output enable (OE) input function on the SN74HC595N?
When the output-enable (OE) input is high, the outputs are in a high-impedance state.
- Does the SN74HC595N support direct clear functionality?
Yes, it supports direct clear functionality through an active-low master reset (MR).
- What is the operating temperature range of the SN74HC595N?
The operating temperature range is -40°C to 85°C.
