SN74LV164APWR
8-bit serial to parallel shift registers in compact 14-pin TSSOP format
Manufacturer： ['rochester', 'ti']
series introduction
# SN74LV164APWR Product Series Introduction
## 1. Overview
The SN74LV164APWR belongs to the SN74LV164 family of integrated circuits, which are widely recognized in the electronics industry for their reliability and performance. This product series is specifically designed as an 8 - bit serial - in, parallel - out shift register, offering a convenient solution for converting serial data into parallel data, a common requirement in various digital systems.
## 2. Key Features
### 2.1 Electrical Characteristics
- **Low - Voltage Operation**: The SN74LV164APWR is optimized for low - voltage applications, typically operating within a voltage range of 2 V to 5.5 V. This makes it suitable for use in battery - powered devices and other low - power systems, where energy efficiency is crucial.
- **High - Speed Performance**: It can achieve high data transfer rates, with a maximum clock frequency of up to several megahertz. This allows for rapid serial - to - parallel conversion, enabling real - time data processing in high - speed digital circuits.
### 2.2 Input and Output Capabilities
- **Serial Inputs**: The device has two serial data inputs (A and B), which can be used to receive serial data. These inputs can be connected to a variety of data sources, such as microcontrollers, sensors, or other serial communication devices.
- **Parallel Outputs**: There are eight parallel outputs (Q0 - Q7), which provide the converted parallel data. These outputs can drive standard TTL loads, making it easy to interface with other digital components in a system.
### 2.3 Control Features
- **Clock Input**: The clock input (CLK) is used to synchronize the shifting of data through the register. Each rising edge of the clock signal causes the data at the serial inputs to be shifted one bit position towards the parallel outputs.
- **Clear Input**: The clear input (CLR) is an active - low input that can be used to reset all the parallel outputs to a logic low level. This provides a convenient way to initialize the register or clear any unwanted data.
## 3. Package and Pinout
### 3.1 Package Type
The SN74LV164APWR comes in a PowerPAD™ TSSOP (Thin Shrink Small Outline Package) with 14 pins. This package offers several advantages, including a small footprint, which is beneficial for space - constrained applications, and good thermal performance due to the PowerPAD feature.
### 3.2 Pinout Description
- **Pins 1 and 2**: Serial data inputs A and B, respectively.
- **Pin 3**: Clock input (CLK).
- **Pin 4**: Clear input (CLR).
- **Pins 5 - 12**: Parallel outputs Q0 - Q7.
- **Pin 13**: Ground (GND).
- **Pin 14**: Positive power supply (VCC).
## 4. Applications
### 4.1 Display Systems
In LED display systems, the SN74LV164APWR can be used to drive multiple LEDs in parallel. Serial data representing the desired display pattern can be sent to the shift register, which then converts it into parallel signals to control the individual LEDs. This simplifies the wiring and reduces the number of output pins required from the controlling microcontroller.
### 4.2 Data Acquisition Systems
When interfacing with sensors that output serial data, the SN74LV164APWR can be used to convert the serial sensor data into parallel format for further processing by a microcontroller or other digital processing unit. This allows for efficient data handling and integration into larger systems.
### 4.3
Images for reference
14-TSSOP
14-TSSOPa
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