SN74LV8T164MPWREP

Shift Registers Overview

The SN74LV8T164MPWREP is an enhanced product, 8-bit parallel-out serial shift register from Texas Instruments. It features AND-gated serial inputs (A and B) and an asynchronous clear (CLR). The device supports a supply voltage range of 1.65V to 5.5V with 5.5V tolerant inputs for level translation. It operates within a temperature range of -55°C to +125°C. The maximum clock frequency reaches 75 MHz at 5V supply. Propagation delays vary between 6.89 ns and 42.0 ns depending on load and voltage. Output current capability is up to ±25 mA.

Shift Registers Feature Summary

• Integrated LVxT enhanced input voltage thresholds enabling seamless up-translation from lower voltage domains and down-translation from higher voltage domains without external components.
• AND-gated dual serial inputs provide precise control over data entry, allowing inhibition of new data and resetting the first flip-flop via low signals on either input A or B.
• Enhanced Product qualification ensures controlled baseline, single assembly and test site, single fabrication site, extended product life cycle, and full product traceability suitable for defense and aerospace environments.

Shift Registers Applications

• Translation between communication modules and system controllers
• Controlling indicator LEDs
• Enabling or disabling digital signals

Shift Registers Procurement Notes

Verify the complete part number including suffixes against official documentation to ensure correct package and temperature grade. Confirm RoHS compliance status as specified in the datasheet. Check for specific military or aerospace qualification requirements if applicable to the end application. Ensure design adheres to absolute maximum ratings to prevent permanent damage.

Shift Registers Selection Notes

Select this component when an 8-bit shift register with integrated voltage level translation is required. The LVxT family allows interfacing between different logic voltage levels directly. Consider the operating temperature range and supply voltage compatibility. Verify that the clock frequency requirements align with the device's switching characteristics under the specific load conditions.

Shift Registers Part Context

This device belongs to the SN74LV8T series of enhanced product logic ICs from Texas Instruments. These devices are designed for robust performance in demanding environments. The MPWREP suffix indicates a specific TSSOP package variant with enhanced reliability features. It is part of a broader family of LVxT logic devices offering versatile voltage translation capabilities.

Shift Registers Replacement Considerations

SN74LV8T164PWREP

Shift Registers FAQ

How do the AND-gated serial inputs function?

Data enters the shift register only when both serial inputs A and B are high. If either input is low, the entry of new data is inhibited, and the first flip-flop resets to a low level upon the next clock pulse.

What is the purpose of the asynchronous clear pin?

Applying a low signal to the CLR pin immediately sets all registers in the shift register to a logical low value, regardless of the clock state.

Can this device perform voltage level translation?

Yes, it supports both up-translation (e.g., 1.8V to 3.3V) and down-translation (e.g., 5.0V to 3.3V) due to its reduced input thresholds and 5.5V tolerant inputs.