Overview
The SN74LV164APWRG4 is an 8-bit parallel-out serial shift register produced by Texas Instruments. This device is designed for operation over a wide voltage range of 2 V to 5.5 V, making it versatile for various system applications. It features NAND-gated serial inputs and an asynchronous clear input, allowing complete control over incoming data. The device is suitable for systems requiring fast switching and high speeds of operation due to its low propagation delay and minimal ground bounce.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| VCC Operation | V | 2 | 5.5 | |
| Maximum tpd at 5 V | ns | 10.5 | ||
| Pulse Duration CLR Low | ns | 5 | 5 | |
| Pulse Duration CLK High or Low | ns | 5 | 5 | |
| Setup Time Data before CLK↑ | ns | 4.5 | 6 | |
| Hold Time Data after CLK↑ | ns | 0 | 0 | |
| Quiet Output, Maximum Dynamic VOL at VCC = 3.3 V | V | 0.28 | 0.8 | 0.8 |
| Quiet Output, Minimum Dynamic VOH at VCC = 3.3 V | V | 3.09 | ||
| Power Dissipation Capacitance at VCC = 3.3 V, CL = 50 pF, f = 10 MHz | pF | 48.1 |
Key Features
- VCC operation from 2 V to 5.5 V, allowing for use in a variety of systems with different logic levels.
- Maximum propagation delay of 10.5 ns at 5 V, enabling fast switching and high speeds of operation.
- Typical VOLP (output ground bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C, ensuring stable performance.
- Typical VOHV (output VOH undershoot) > 2.3 V at VCC = 3.3 V, TA = 25°C.
- Ioff supports live insertion, partial power-down mode, and back-drive protection.
- Support for mixed-mode voltage operation on all ports.
- Latch-up performance exceeds 250 mA per JESD 17.
Applications
- IP routers and enterprise switches.
- Access control and security systems, including access keypads and biometrics.
- Smart meters, particularly for power line communication.
Q & A
- What is the voltage range for VCC operation of the SN74LV164APWRG4?
The SN74LV164APWRG4 operates over a VCC range of 2 V to 5.5 V.
- What is the maximum propagation delay at 5 V for this device?
The maximum propagation delay at 5 V is 10.5 ns.
- What is the typical output ground bounce (VOLP) at VCC = 3.3 V and TA = 25°C?
The typical output ground bounce (VOLP) is less than 0.8 V.
- Does the SN74LV164APWRG4 support mixed-mode voltage operation?
Yes, it supports mixed-mode voltage operation on all ports.
- What is the latch-up performance of the SN74LV164APWRG4 according to JESD 17?
The latch-up performance exceeds 250 mA per JESD 17.
- What are some common applications of the SN74LV164APWRG4?
Common applications include IP routers, enterprise switches, access control and security systems, and smart meters.
- What types of packages are available for the SN74LV164APWRG4?
The device is available in various packages such as SOIC, SSOP, TSSOP, TVSOP, SOP, VQFN, and WQFN.
- What is the significance of the Ioff feature in the SN74LV164APWRG4?
The Ioff feature supports live insertion, partial power-down mode, and back-drive protection.
- How does the device handle clocking?
Clocking occurs on the low-to-high-level transition of the clock (CLK) input.
- What are the setup and hold time requirements for the SN74LV164APWRG4?
The setup time for data before CLK↑ is 4.5 to 6 ns, and the hold time for data after CLK↑ is 0 ns.
