Last Updated on October 22, 2023 by Kevin Chen
Image source Sparkfun
The SN74HC595N IC is an 8-bit shift register with an output latch. This means that it can store up to 8 bits of data and then output them in a sequential manner. The SN74HC595N is commonly used in applications such as LED displays, digital clocks, and other devices that require multiple outputs that can be updated rapidly.
It is a popular choice for projects that require multiple outputs as it is relatively inexpensive and easy to use.
Take note that SN74HC595N IC is considered a replacement for the 74HC595 shift register IC.
It has the same functionality and pinouts, but improved performance characteristics. The SN74HC595N is a high-speed, 8-bit shift register with an output latch.
It is designed to interface with microcontrollers or other digital logic chips to provide multiple outputs that can be updated quickly.
How SN74HC595N IC works
The SN74HC595N has 8 parallel output pins that can be used to control 8 independent circuits. It is often used to increase the number of output pins available on a microcontroller.
When a logic high signal is applied to the SN74HC595N’s data input (DIN) pin, it shifts the data bit currently on the DIN pin into its internal 8-bit shift register.
When the data is shifted in, the output of the SN74HC595N shifts out the data stored in the register on its 8-bit output pins (Q0-Q7
). This allows the SN74HC595N to control 8 separate circuits with only 1 data pin from the microcontroller.
The SN74HC595N also features a latch pin (LATCH) that can be used to transfer the data stored in the shift register to the output pins.
This allows for multiple data bits to be shifted into the register, and then all of the data to be transferred to the output pins at once.
The SN74HC595N also has a Master Reset (MR) pin that can be used to reset the register and clear all of the outputs.
Image source Pija Education
Here are the pins on the SN74HC595N IC:
Pin 1: Q1: This is the Data Out pin.It outputs the serial data that is shifted out of the IC. Pin 2: Q2: This is the second Data Out pin.
Pin 3: Q3: This is the third Data Out pin.
Pin 4: Q4: This is the fourth Data Out pin.
Pin 5: Q5: This is the fifth Data Out pin.
Pin 6: Q6: This is the sixth Data Out pin.
Pin 7: Q7: This is the seventh Data Out pin.
Pin 8: GND: This is the Ground pin.
Pin 9: SRCLR: This stands for Shift Register Clear. This pin is used to clear the register. Pin 10: RCLK: This stands for Register Clock. This pin is used to load data into the register.
Pin 11: SER: This stands for Serial. This pin is used to write data into the register. Pin 12: SRCLK: This stands for Shift Register Clock. This pin is used to shift the data out of the register.
Pin 13: OE: This stands for Output Enable. This pin is used to enable or disable the output of the IC.
Pin 14: DS: This stands for Data Store. This pin is used to store data when the RCLK pin is taken low.
Pin 15: Qo: This is the Output pin. It is the output of the IC which is the parallel output of the serial data that is shifted out.
Pin 16: VCC: This is the Power pin. It supplies the power to the IC.
SN74HC595N IC Technical Specifications
Here are the technical specifications of this shift register.
-Number of pins: The shift register has 16 pins.
-Power supply voltage: The power supply voltage should be between 2V and 6V. -Operating temperature: The operating temperature range is between -40°C and +85°C. -Output current: The maximum output current is 25mA per output.
-Output type: The output type is open-drain.
-Output enable: Output enable is active low.
-Propagation delay: The propagation delay is typically 10 ns.
-Maximum clock frequency: The maximum clock frequency is 10 MHz.
-Package type: The package type is DIP. -Dimensions: The dimension of the IC is 6.5mm x 10.2mm.
-Power dissipation: The maximum power dissipation is 250mW.
-Frequency: The frequency range is DC to 100MHz.
-Compliance: This shift register is compliant with the RoHS and ESD standards. -Number of bits: The shift register has 8 bits.
SN74HC595N IC Features and Advantages
Here are the main features that make SN74HC595N IC suitable and popular.
- Low power consumption: The SN74HC595N is designed to work at low voltages; it requires only 4.5 volts to operate and consumes only 2.6 mA of current when active. This makes it ideal for battery-powered applications.
- High speed: The SN74HC595N can achieve transfer rates of up to 10 MHz, which is much faster than other similar ICs.
- High noise immunity: The SN74HC595N is designed to be immune to electrical noise and interference, which helps reduce errors and improves signal integrity.
- Low cost: The SN74HC595N is a low-cost IC, making it ideal for applications where cost is a major factor.
- Easy to use: The SN74HC595N is relatively easy to use, with no complex programming needed. This makes it an attractive choice for hobbyists and beginners.
- Noise immunity:The SN74HC595N is designed to be immune to electrical noise and interference, which helps reduce errors and improves signal integrity.
SN74HC595N IC Applications
Here are the appliactions of SN74HC595N IC:
- LED display driver
- Digital clock
- Step motor controller
- Data storage
- Digital voltmeter
- Digital to analog conversion
- DC motor controller
- Analog to digital conversion
- Audio amplifier
- Keyboard encoder
Alternatives Shift Registers for the SN74HC595N IC
There are numerous alternatives to the SN74HC595N IC shift register, including the SN74HC164N, SN54HC165N, SN74HC166N, and SN74HC174N. Most of these shit registers are from the same family as the SN74HC595N, meaning they have similar features and performance.
I hope now you know all the essential details about SN74HC595N IC. You are in a perfect position to buy one and deploy it in your application area.
And in case you want to buy SN74HC595N ICs in China, consider contacting ICRFQ. We are a reputable supplier of shift registers for sale in China.
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