SN74HC166DR

Product Overview

Category: Integrated Circuit (IC)
Use: Shift Register
Characteristics: High-speed, Serial-in Parallel-out (SIPO), 8-bit, CMOS technology
Package: SOIC (Small Outline Integrated Circuit)
Essence: Data storage and transfer device
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Supply Voltage Range: 2V to 6V
Input Voltage Range: 0V to VCC
Output Voltage Range: 0V to VCC
Operating Temperature Range: -40°C to +85°C
Maximum Clock Frequency: 100 MHz
Number of Stages: 8
Output Current: ±6 mA
Propagation Delay: 15 ns (typical)

Detailed Pin Configuration

The SN74HC166DR has a total of 16 pins. The pin configuration is as follows:

SER (Serial Data Input)
QH' (Serial Data Output)
CLK (Clock Input)
GND (Ground)
QA (Parallel Data Output A)
QB (Parallel Data Output B)
QC (Parallel Data Output C)
QD (Parallel Data Output D)
QE (Parallel Data Output E)
QF (Parallel Data Output F)
QG (Parallel Data Output G)
QH (Parallel Data Output H)
MR (Master Reset)
SH/LD (Shift/Load Input)
OE (Output Enable)
VCC (Supply Voltage)

Functional Features

Serial-to-parallel data conversion
High-speed operation
CMOS technology for low power consumption
Master reset function for clearing the register
Shift/load input for controlling data transfer
Output enable for enabling/disabling the outputs

Advantages and Disadvantages

Advantages: - High-speed operation allows for quick data transfer - CMOS technology ensures low power consumption - Compact SOIC package saves board space - Master reset function provides easy clearing of the register

Disadvantages: - Limited number of stages (8) may not be sufficient for certain applications - Requires an external clock signal for proper operation

Working Principles

The SN74HC166DR is a shift register that converts serial input data into parallel output data. It operates based on the clock input signal, which controls the shifting of data through the register. The shift/load input determines whether the data is shifted or loaded into the register. The master reset input clears the register to its initial state. The output enable input enables or disables the parallel outputs.

Detailed Application Field Plans

The SN74HC166DR can be used in various applications, including:

Data communication systems
Serial-to-parallel conversion in microcontrollers
Industrial automation and control systems
LED matrix displays
Digital audio equipment
Robotics and motor control systems

Detailed and Complete Alternative Models

Some alternative models to the SN74HC166DR are:

CD74HC165E: Similar 8-bit shift register with parallel outputs, but in DIP package.
74HCT166N: 8-bit shift register with parallel outputs, compatible with TTL logic levels.
SN74LS166N: 8-bit shift register with parallel outputs, compatible with LS-TTL logic levels.

These alternative models provide similar functionality and can be used as replacements depending on specific requirements.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN74HC166DR v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SN74HC166DR in technical solutions:

Q: What is SN74HC166DR? A: SN74HC166DR is a 8-bit parallel-in/serial-out shift register with asynchronous reset, commonly used in digital electronics.
Q: What is the purpose of using SN74HC166DR? A: SN74HC166DR is used to expand the number of input/output pins of a microcontroller or other digital devices.
Q: How many inputs can SN74HC166DR handle? A: SN74HC166DR has 8 parallel inputs that can be used to read the state of external switches or sensors.
Q: Can SN74HC166DR be cascaded to handle more than 8 inputs? A: Yes, multiple SN74HC166DR chips can be cascaded together to handle a larger number of inputs.
Q: How does SN74HC166DR work? A: It shifts the state of the parallel inputs into its internal registers when a clock signal is applied, allowing the microcontroller to read the data serially.
Q: What is the maximum clock frequency supported by SN74HC166DR? A: SN74HC166DR can operate at clock frequencies up to 100 MHz.
Q: Does SN74HC166DR require any external components for operation? A: It requires a power supply (VCC and GND) and a clock signal (CLK). Additionally, pull-up resistors may be needed on the parallel inputs.
Q: Can SN74HC166DR be used with both 3.3V and 5V microcontrollers? A: Yes, SN74HC166DR is compatible with both 3.3V and 5V logic levels.
Q: What is the output format of SN74HC166DR? A: The output is in serial format, which can be read by the microcontroller using a single data line.
Q: Are there any limitations or considerations when using SN74HC166DR? A: It is important to ensure that the clock frequency and setup/hold times are within the specified limits. Additionally, care should be taken to avoid signal noise and interference.