SN74HC164NS

Shift Registers Overview

The SN74HC164NS is an 8-bit parallel-out serial shift register manufactured by Texas Instruments in a 14-pin Small Outline (SO) package. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -40°C to 125°C. The device features AND-gated serial inputs (A and B), an asynchronous clear (CLR) input, and fully buffered clock and serial inputs. Typical propagation delay is 20 ns, with output drive capabilities of ±4 mA at 5 V.

Shift Registers Feature Summary

• Features AND-gated serial inputs that permit complete control over incoming data entry
• Includes an asynchronous clear input for immediate reset of all registers
• Provides eight parallel outputs capable of driving up to 10 LSTTL loads

Shift Registers Applications

• Programmable Logic Controllers
• Appliances
• Video Display Systems
• Output Expander

Shift Registers Procurement Notes

Verify the specific ordering suffix 'NS' corresponds to the 14-pin SO package variant when sourcing. Confirm the required operating temperature grade matches the application environment, as industrial ratings extend to 125°C while commercial grades may differ. Ensure power supply decoupling capacitors are placed close to the VCC pin to maintain signal integrity during high-speed operation.

Shift Registers Selection Notes

Select this component when a low-power CMOS shift register with parallel output is required for serial-to-parallel conversion. The dual gated serial inputs allow flexible data enable logic without external gating components. Verify that the maximum clock frequency requirements at the target supply voltage fall within the specified switching characteristics for reliable timing performance.

Shift Registers Part Context

This part belongs to the SNx4HC164 family of 8-bit shift registers produced by Texas Instruments. The 'SN' prefix indicates standard commercial-grade processing, while 'HC' denotes High-speed CMOS technology. The 'NS' suffix specifically identifies the 14-pin Small Outline package format, distinguishing it from PDIP or TSSOP variants within the same functional family.

Shift Registers Replacement Considerations

Direct replacements include SN74HC164N (PDIP) and SN74HC164D (SOIC). Cross-manufacturer equivalents such as MC74HC164ANG or MM74HC164MTCX offer identical functionality but require verification of package dimensions and thermal characteristics.