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The SLP74HC165 is an 8-bit serial or parallel-in/serial-out shift register.

The device features a serial data input (DS), eight parallel data inputs (D0 to D7) and two complementary serial outputs (Q7 and Q7(———). Parallel-in access to each stage is provided by eight individual direct data (D0 to D7) inputs that are enabled by a low level at the parallel load input (PL(———). When PL(——— is HIGH data enters the register serially at DS. When the clock enable input (CE(———) is LOW data is shifted on the LOW-to-HIGH transitions of the CP input. A HIGH on CE(———will disable the CP input. Inputs are overvoltage tolerant to 15V. This enables the device to be used in HIGH-to-LOW level shifting applications.

Main feature

Synchronous serial inputs

Asynchronous 8-bit parallel load

CMOS input levels

ESD protection:

  • HBM Exceeds 2000V

  • CDM Exceeds 1000V

Latch-up performance exceeds 100mA

Specified from -40°C to +85°C and from -40°C to +125°C

Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SLP74HC165EC SOP-16-225-1.27 74HC165 Halogen free Tube
SLP74HC165ECTR SOP-16-225-1.27 74HC165 Halogen free Tape & Reel
Block Diagram


title Types of Size (KB) date Download the latest English version
SLP74HC165 PDF 188 2022-02-28 SLP74HC165 Datasheet