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SN74HC166

ACTIVE

8-Bit Parallel-Load Shift Registers

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Data sheet

SN74HC166

ACTIVE
Data sheet Order now

Product details

Configuration Parallel-in, Serial-out Bits (#) 8 Technology family HC Input type Standard CMOS Output type Push-Pull Clock frequency (MHz) 24 IOL (max) (mA) 5.2 IOH (max) (mA) -5.2 Supply current (max) (µA) 80 Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Operating temperature range (°C) -40 to 125 Rating Catalog
Configuration Parallel-in, Serial-out Bits (#) 8 Technology family HC Input type Standard CMOS Output type Push-Pull Clock frequency (MHz) 24 IOL (max) (mA) 5.2 IOH (max) (mA) -5.2 Supply current (max) (µA) 80 Features Balanced outputs, High speed (tpd 10-50ns), Positive input clamp diode Operating temperature range (°C) -40 to 125 Rating Catalog
PDIP (N) 16 181.42 mm² (19.3 mm × 9.4 mm) SOT-23-THN (DYY) 16 8.4 mm² (4.2 mm × 2 mm) SSOP (DB) 16 48.36 mm² (6.2 mm × 7.8 mm) SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm) SOP (NS) 16 79.56 mm² (10.2 mm × 7.8 mm) TSSOP (PW) 16 32 mm² (5 mm × 6.4 mm)
  • Wide operating voltage range of 2V to 6V
  • Outputs can drive up to 10 LSTTL loads
  • Low power consumption, 80µA max ICC
  • Typical tpd = 13ns
  • ±4mA output drive at 5V
  • Low input current of 1µA max
  • Synchronous load
  • Direct overriding clear
  • Parallel-to-serial conversion
  • Wide operating voltage range of 2V to 6V
  • Outputs can drive up to 10 LSTTL loads
  • Low power consumption, 80µA max ICC
  • Typical tpd = 13ns
  • ±4mA output drive at 5V
  • Low input current of 1µA max
  • Synchronous load
  • Direct overriding clear
  • Parallel-to-serial conversion

The SNx4HC166 device contains an 8-bit shift register with one serial input and eight parallel-load inputs.

The SNx4HC166 device contains an 8-bit shift register with one serial input and eight parallel-load inputs.
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CD74HCT166 ACTIVE High Speed CMOS Logic 8-Bit Parallel-In/Serial-Out Shift Register Voltage range 4.5V to 5.5V, average propagation delay 22ns, average drive strength 4mA

Technical documentation

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Top documentation Type Title Format options Date
* Data sheet SNx4HC166 8-Bit Parallel-Load Shift Registers datasheet (Rev. F) PDF | HTML May 19, 2025
Application note Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML Dec 15, 2022
Application note HCMOS Design Considerations (Rev. A) Sep 9, 2002

Design & development

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Evaluation board

14-24-LOGIC-EVM — Logic product generic evaluation module for 14-pin to 24-pin D, DB, DGV, DW, DYY, NS and PW packages

The 14-24-LOGIC-EVM evaluation module (EVM) is designed to support any logic device that is in a 14-pin to 24-pin D, DW, DB, NS, PW, DYY or DGV package,

User guide: PDF | HTML
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Package Pins CAD symbols, footprints & 3D models
PDIP (N) 16 Ultra Librarian
SOT-23-THN (DYY) 16 Ultra Librarian
SSOP (DB) 16 Ultra Librarian
SOIC (D) 16 Ultra Librarian
SOP (NS) 16 Ultra Librarian
TSSOP (PW) 16 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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