Overview
The SN74AHC594PWR is an 8-bit serial-in, parallel-out shift register with an integrated 8-bit D-type storage register, manufactured by Texas Instruments. This device is part of the AHC (Advanced High-Speed CMOS) logic family and is designed for high-speed and low-power applications. It features separate clocks for the shift and storage registers, along with direct overriding clear inputs for both registers. The device also includes a serial output (QH′) for cascading purposes, making it versatile for various digital circuit designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range (VCC) | 2 to 5.5 | V |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | TSSOP (PW) | - |
| Number of Pins | 16 | - |
| Maximum Clock Frequency (CL = 15 pF) | 80 to 120 | MHz |
| ESD Protection | 2000V human-body model, 1000V charged-device model | - |
| Latch-up Performance | Exceeds 100mA per JESD 78, class II | - |
| Continuous Output Current | ±25 mA | mA |
Key Features
- 8-bit serial-in, parallel-out shift register with 8-bit D-type storage register
- Independent direct overriding clear inputs for shift and storage registers (SRCLR, RCLR)
- Independent clocks for shift and storage registers (SRCLK, RCLK)
- Positive-edge triggered clocks
- Serial output (QH′) for cascading purposes
- Operating voltage range: 2V to 5.5V VCC
- Low power consumption
- ESD protection exceeds JESD 22 standards
- Latch-up performance exceeds 100mA per JESD 78, class II
Applications
- Network Switches
- Power Infrastructures
- PCs and Notebooks
- LED Displays
- Servers
Q & A
- What is the operating voltage range of the SN74AHC594PWR?
The operating voltage range is 2V to 5.5V VCC.
- What type of package does the SN74AHC594PWR come in?
The device comes in a TSSOP (PW) package with 16 pins.
- What are the key features of the SN74AHC594PWR?
The device features an 8-bit serial-in, parallel-out shift register with an 8-bit D-type storage register, independent clocks and clear inputs, and ESD protection.
- What are the typical applications of the SN74AHC594PWR?
Typical applications include network switches, power infrastructures, PCs and notebooks, LED displays, and servers.
- What is the maximum clock frequency for the SN74AHC594PWR?
The maximum clock frequency is 80 to 120 MHz for a load capacitance of 15 pF.
- Does the SN74AHC594PWR have ESD protection?
Yes, it exceeds JESD 22 standards with 2000V human-body model and 1000V charged-device model protection.
- What is the latch-up performance of the SN74AHC594PWR?
The latch-up performance exceeds 100mA per JESD 78, class II.
- How many continuous output current can the SN74AHC594PWR handle?
The device can handle ±25 mA of continuous output current).
- What is the operating temperature range of the SN74AHC594PWR?
The operating temperature range is -40°C to 125°C).
- Are the clocks for the shift and storage registers independent?
Yes, the shift register (SRCLK) and storage register (RCLK) clocks are independent and positive-edge triggered).
