Overview
The SN74HC165DRE4 is an 8-bit parallel-load shift register produced by Texas Instruments. This device is part of the SNx4HC165 family and is designed to convert parallel data into a serial output. It features a wide operating voltage range, low power consumption, and high output drive capability, making it versatile for various digital circuit applications.
Key Specifications
| Parameter | Min | Nom | Max |
|---|---|---|---|
| Supply Voltage (VCC) | 2 V | 5 V | 6 V |
| High-Level Input Voltage (VIH) | 1.5 V (at VCC=2V) | 3.15 V (at VCC=4.5V) | 4.2 V (at VCC=6V) |
| Low-Level Input Voltage (VIL) | 0.5 V (at VCC=2V) | 1.35 V (at VCC=4.5V) | 1.8 V (at VCC=6V) |
| Output Voltage (VO) | 0 V | - | VCC |
| Clock Frequency (fclock) | 25 MHz (at VCC=4.5V) | - | 29 MHz (at VCC=6V) |
| Propagation Delay Time (tpd) | - | 13 ns | - |
| Output Drive at 5 V | - | ±4 mA | - |
| Input Current | - | 1 µA | - |
| Power Consumption (ICC) | - | 80 µA | - |
| Operating Temperature Range | -40°C | - | 125°C |
Key Features
- Wide Operating Voltage Range of 2 V to 6 V
- Outputs Can Drive Up to 10 LSTTL Loads
- Low Power Consumption, 80-µA Maximum ICC
- Typical Propagation Delay Time (tpd) = 13 ns
- ±4-mA Output Drive at 5 V
- Low Input Current of 1 µA Maximum
- Complementary Outputs
- Direct Overriding Load (Data) Inputs
- Gated Clock Inputs
- Parallel-to-Serial Data Conversion
Applications
The SN74HC165DRE4 is commonly used in digital circuits where parallel data needs to be converted into a serial format. This includes applications such as data acquisition systems, microcontroller interfaces, and other digital logic circuits. Multiple SN74HC165 devices can be cascaded to increase the number of digital inputs that can be interfaced with a single processor.
Q & A
- What is the primary function of the SN74HC165DRE4?
The primary function is to convert parallel data into a serial output. - What is the operating voltage range of the SN74HC165DRE4?
The operating voltage range is from 2 V to 6 V. - How many bits can the SN74HC165DRE4 handle?
The device can handle 8 bits of data. - What is the maximum clock frequency for the SN74HC165DRE4?
The maximum clock frequency is up to 29 MHz at 6 V VCC. - Does the SN74HC165DRE4 support cascading?
Yes, multiple devices can be cascaded to increase the number of digital inputs. - What is the propagation delay time (tpd) of the SN74HC165DRE4?
The typical propagation delay time is 13 ns. - What is the output drive capability of the SN74HC165DRE4 at 5 V?
The output drive capability is ±4 mA at 5 V. - How much power does the SN74HC165DRE4 consume?
The maximum power consumption is 80 µA. - What is the input current of the SN74HC165DRE4?
The maximum input current is 1 µA. - What are the package options for the SN74HC165DRE4?
The device is available in SOIC (D) package among others.
