74LV165D,118

Shift Registers Overview

The Nexperia 74LV165D,118 is an 8-bit parallel-in/serial-out shift register housed in a SO16 (SOT109-1) plastic small outline package. It operates within a supply voltage range of 1.0 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device features eight parallel data inputs (D0 to D7), a serial data input (DS), and complementary serial outputs (Q7 and Q7). Key control signals include an active LOW parallel load input (PL), a clock enable input (CE), and a LOW-to-HIGH edge-triggered clock input (CP).

Shift Registers Feature Summary

• Provides asynchronous parallel loading capability when the PL input is asserted LOW.
• Supports synchronous serial shifting on LOW-to-HIGH transitions of the CP input when CE is LOW.
• Includes input clamp diodes to allow interfacing with voltages exceeding VCC using current limiting resistors.

Shift Registers Applications

• Synchronous parallel-to-serial conversion applications
• Expansion of serial data streams via synchronous serial input
• Low voltage logic interface circuits

Shift Registers Procurement Notes

Verify that the ordering suffix ',118' corresponds specifically to the SO16 (SOT109-1) package variant. Confirm the component meets the required operating temperature range of -40 °C to +125 °C for your specific application environment. Ensure design safeguards are implemented as the product is not qualified for automotive use unless explicitly stated otherwise.

Shift Registers Selection Notes

Select this component for designs requiring wide supply voltage compatibility from 1.0 V to 5.5 V. It is suitable for low power CMOS applications needing direct interface with TTL levels between 2.7 V and 3.6 V. Consider the SO16 package constraints and verify ESD protection requirements against HBM Class 2 and CDM Class C3 standards.

Shift Registers Part Context

This part belongs to the 74LV series of logic integrated circuits manufactured by Nexperia. The 74LV family is characterized by low voltage operation and CMOS technology. The 74LV165 specifically functions as an 8-bit shift register, distinct from other logic families like HC or HCT which may have different voltage thresholds and performance characteristics.

Shift Registers Replacement Considerations

The 74LV165PW is a compatible alternative featuring a TSSOP16 package instead of the SO16 form factor. Both variants share identical electrical specifications and functionality but differ in physical dimensions and pin pitch.

Shift Registers FAQ

How does the device handle parallel data loading?

Data from the parallel inputs D0 to D7 is loaded asynchronously into the shift register when the parallel load input (PL) is held at a LOW voltage level.

What is the function of the Clock Enable (CE) input?

When the CE input is LOW, data shifts on the LOW-to-HIGH transitions of the CP input. A HIGH signal on CE disables the CP input, effectively holding the register state.

Can the inputs interface with voltages higher than VCC?

Yes, the inputs include clamp diodes, which enables the use of current limiting resistors to interface the inputs to voltages in excess of VCC.