74LV165D/AUJ

Shift Registers Overview

The 74LV165D/AUJ is an 8-bit parallel-in/serial-out shift register manufactured by Nexperia. It features a serial data input (DS), eight parallel data inputs (D0 to D7), and two complementary serial outputs (Q7 and Q7). The device operates with a wide supply voltage range from 1.0 V to 5.5 V and includes clamp diodes on inputs for interfacing with voltages exceeding VCC. Data is loaded asynchronously when the parallel load input (PL) is LOW, while shifting occurs on LOW-to-HIGH clock transitions when the clock enable (CE) is LOW.

Shift Registers Feature Summary

• Supports synchronous parallel-to-serial applications and easy expansion via synchronous serial input.
• Provides direct interface capability with TTL levels within the 2.7 V to 3.6 V supply range.
• Features latch-up performance exceeding 100 mA per JESD 78 Class II Level B standards.

Shift Registers Applications

• Synchronous parallel-to-serial data conversion
• Expansion of serial data streams in digital systems
• Interfacing with TTL logic families

Shift Registers Procurement Notes

Verify that the specific ordering suffix matches the required package type, as the datasheet lists distinct packages such as SO16 (SOT109-1) and TSSOP16 (SOT403-1). Confirm the temperature range specification aligns with operational requirements, noting the standard -40 °C to +125 °C rating. Ensure compliance with JEDEC standards relevant to the target voltage domain before finalizing procurement.

Shift Registers Selection Notes

Select this component for designs requiring low power CMOS dissipation and compatibility with mixed voltage environments. The device supports operation across multiple JEDEC standards, making it suitable for applications ranging from 1.65 V to 5.5 V. Consider the available ESD protection ratings and latch-up performance when evaluating robustness for industrial or automotive-grade environments.

Shift Registers Part Context

This part belongs to the 74LV165 family of 8-bit shift registers produced by Nexperia. The manufacturer previously operated under NXP Semiconductors, which explains the brand association. The product is designed for general-purpose logic applications requiring reliable serial data handling with low power consumption and broad voltage tolerance.

Shift Registers Replacement Considerations

The 74LV165PW is a verified alternative offering the same functionality in a TSSOP16 package instead of the SO16 variant. Both devices share identical electrical characteristics and pin configurations, allowing for potential form-factor adjustments without circuit redesign.

Shift Registers FAQ

How does the parallel load input (PL) affect data entry?

When the PL input is LOW, data from the parallel inputs (D0 to D7) is loaded into the shift register asynchronously. When PL is HIGH, data enters the register serially at the DS input.

What is the function of the clock enable (CE) input?

The CE input controls the clocking action. When CE is LOW, data shifts on the LOW-to-HIGH transitions of the CP input. A HIGH level on CE disables the CP input, inhibiting serial shifting.