74LV164N,112

Overview

The 74LV164N,112 is an 8-bit edge-triggered serial-in/parallel-out shift register manufactured by Nexperia. It operates within a supply voltage range of 1.0 V to 5.5 V and accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V. The device features gated serial data inputs (DSA and DSB) where either input acts as an active HIGH enable for the other. Data shifts on the LOW-to-HIGH transition of the clock input (CP). Propagation delay from CP or MR to Qn is typically 12 ns at VCC = 3.3 V with CL = 15 pF. Maximum clock frequency is 78 MHz under the same conditions. It includes an asynchronous master reset (MR) input that forces all outputs LOW when active. ESD protection exceeds 2000 V (HBM) and 200 V (MM).

Feature Summary

• Gated serial data entry via two inputs acting as mutual enables.
• Asynchronous master reset overrides all other inputs to clear the register.
• Compatible with 74HC164 and 74HCT164 pin and function layouts.

Applications

• Serial-to-parallel data conversion in digital systems.
• Parallel output expansion for microcontroller interfaces.
• Data storage and shifting operations in low-voltage logic circuits.

Procurement Notes

Verify the specific ordering suffix '112' corresponds to the DIP14 package (SOT27-1) as defined in the official Nexperia documentation. Confirm the manufacturer source is Nexperia B.V., formerly Philips Semiconductors, to ensure component authenticity. Check current production status, as legacy logic families may have end-of-life implications. Ensure design compatibility with the specified -40 °C to +125 °C temperature range requirements.

Selection Notes

Select this component for applications requiring wide supply voltage operation down to 1.0 V. It is suitable for interfacing with 5 V logic due to its tolerance characteristics. Consider the DIP14 package constraints for through-hole mounting if space allows. Evaluate power dissipation limits based on ambient temperature and package thermal resistance. Ensure clock signal rise/fall times meet the specified limits for the chosen supply voltage to maintain timing integrity.

Part Context

This part belongs to the 74LV series of low-voltage CMOS logic devices. It serves as a functional equivalent to the standard 74HC164 but optimized for lower voltage applications. The N suffix indicates a plastic dual in-line package. It is part of a broader family of shift registers and memory elements designed for general-purpose digital logic applications.

Replacement Considerations

The 74HC164 and 74HCT164 are pin and function compatible replacements. Verify voltage level compatibility, as HC/HCT variants typically require higher minimum supply voltages than the LV series. Ensure replacement packages match the physical footprint requirements of the existing design.