Overview
The SN74AHCT595PWR is an 8-bit serial-in, parallel-out shift register produced by Texas Instruments. This device is part of the 74AHCT series, which combines the benefits of TTL-compatible CMOS inputs with the low power consumption of CMOS technology. The SN74AHCT595PWR is designed to handle serial data input and convert it into parallel output, making it highly efficient for applications requiring multiple outputs from a single microcontroller pin.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Manufacturer | Texas Instruments | Original manufacturer of the IC |
| Part Number | SN74AHCT595PWR | Serial-in, parallel-out shift register |
| Logic Type | 74AHCT (TTL-compatible CMOS) | CMOS technology with TTL-compatible inputs |
| Number of Bits per Element | 8 | 8-bit serial to parallel output |
| Voltage - Supply | 4.5V to 5.5V | Recommended supply voltage range |
| Operating Temperature | -40°C to 125°C | Industrial temperature range |
| Package / Case | 16-TSSOP (0.173", 4.40mm Width) | Surface mount package |
| Output Type | Tri-State | Outputs can be in high-impedance state |
| Propagation Delay | Approximately 7.4 ns (typical) at 5V | Time delay between input and output |
| Max Output Current | ±8 mA per pin | Maximum output drive current |
| ESD Protection | 2000V Human-Body Model, 200V Machine Model, 1000V Charged-Device Model | Electrostatic discharge protection levels |
Key Features
- Inputs are TTL-voltage compatible: Ensures compatibility with TTL logic levels.
- 8-bit serial-in, parallel-out shift register: Efficiently handles serial data input and converts it into parallel output.
- Direct clear on shift register: Allows for quick reset functionality through the SRCLR input.
- Latch-up performance: Exceeds 100mA per JESD 78, Class II.
- ESD protection: Exceeds JESD 22 standards for Human-Body, Machine, and Charged-Device Models.
- Low power consumption: Suitable for applications where power efficiency is crucial.
- Tri-State outputs: Outputs can be in high-impedance state, allowing for multiple devices to share the same bus.
- Fast propagation delay: Typical propagation delay of approximately 7.4 ns at 5V.
Applications
- Network switches: Used in networking equipment for data handling and output.
- Power infrastructures: Utilized in power management and distribution systems.
- PCs and notebooks: Employed in computer systems for expanding I/O capabilities.
- LED displays: Commonly used in LED display systems for controlling multiple LEDs.
- Servers: Used in server systems for efficient data handling and output.
Q & A
- What is the primary function of the SN74AHCT595PWR?
The primary function is to act as an 8-bit serial-in, parallel-out shift register with a direct clear feature and tri-state outputs.
- What is the operating voltage range of the SN74AHCT595PWR?
The operating voltage range is 4.5V to 5.5V.
- What type of package does the SN74AHCT595PWR come in?
The device comes in a 16-TSSOP package.
- What is the maximum output current per pin for the SN74AHCT595PWR?
The maximum output current per pin is ±8 mA.
- Does the SN74AHCT595PWR have ESD protection?
Yes, it exceeds JESD 22 standards for Human-Body, Machine, and Charged-Device Models.
- What is the typical propagation delay of the SN74AHCT595PWR at 5V?
The typical propagation delay is approximately 7.4 ns.
- Can the SN74AHCT595PWR be used in high-temperature environments?
Yes, it operates within a temperature range of -40°C to 125°C.
- How does the direct clear feature work on the SN74AHCT595PWR?
The direct clear feature allows for immediate reset of the output state through the SRCLR input.
- Is the SN74AHCT595PWR RoHS compliant?
Yes, it is RoHS compliant.
- What are some common applications of the SN74AHCT595PWR?
Common applications include network switches, power infrastructures, PCs and notebooks, LED displays, and servers.
