SN74HCS164DYYR

Shift Registers Overview

The SN74HCS164DYYR is an 8-bit parallel-out serial shift register from the Texas Instruments HCS logic family, housed in a SOT-23-THIN (14) package. It operates within a supply voltage range of 2 V to 6 V and supports an ambient temperature range of –40°C to +125°C. The device features Schmitt-trigger inputs for noise rejection and provides balanced CMOS push-pull outputs with ±7.8-mA drive capability at 6 V. Typical supply current is 100 nA, and propagation delay ranges from 7 ns to 42 ns depending on voltage and temperature.

Shift Registers Feature Summary

• Schmitt-trigger inputs provide high noise immunity and tolerance for slow signal transitions
• AND-gated serial inputs allow precise control over data entry into the shift register
• Balanced CMOS push-pull outputs ensure similar sourcing and sinking current capabilities
• Asynchronous clear input immediately resets all registers to a logical low state

Shift Registers Applications

• Output expansion for microcontroller systems
• LED matrix control circuits
• Seven-segment display control
• 8-bit data storage applications

Shift Registers Procurement Notes

Verify the specific DYY suffix corresponds to the SOT-23-THIN package configuration required for your design. Confirm that the operating voltage and temperature ratings align with your system's environmental constraints. Ensure proper termination of unused inputs to prevent undefined states or excessive power consumption during operation.

Shift Registers Selection Notes

Select this component when space-constrained designs require an 8-bit shift register with robust noise immunity. The Schmitt-trigger architecture makes it suitable for noisy environments or signals with slow rise times. Verify that the output drive current meets the load requirements, as the device can sustain up to ±7.8 mA at 6 V without damage.

Shift Registers Part Context

This part belongs to the SN74HCS series, which combines HCMOS speed with low power consumption and Schmitt-trigger inputs. The DYY suffix specifically denotes the SOT-23-THIN package variant, offering a compact footprint compared to standard SOIC or TSSOP options while maintaining compatible electrical characteristics.

Shift Registers Replacement Considerations

SN74HCS164PW: TSSOP-14 package equivalent. SN74HCS164D: SOIC-14 package equivalent. SN74HCS164BQA: WQFN-14 package equivalent.