NEXPERIA 74HC165 8-Bit Parallel-in/Serial-out Shift Register, TSSOP-16

The NEXPERIA 74HC165 is an advanced, high-speed CMOS 8-bit shift register designed for efficient data conversion from parallel to serial format. It features a versatile design with a serial data input (DS), eight parallel data inputs (D0 to D7), and two complementary serial outputs (Q7 and active-low Q7), offering flexibility in data handling and system integration.

This device excels in digital logic applications where space and power are at a premium. Its wide supply voltage range from 2.0V to 6.0V makes it suitable for battery-powered and mixed-voltage systems. The CMOS technology ensures low power dissipation and provides high noise immunity, which is critical for reliable operation in electrically noisy environments.

Key Functionality

When the active-low parallel load (active-low PL) input is held LOW, data from the eight parallel inputs is asynchronously loaded into the register. When active-low PL is HIGH, data enters serially via the DS input. Data shifting occurs on the low-to-high transitions of the clock pulse (CP) input, provided the clock enable (active-low CE) is LOW. A HIGH on active-low CE disables the clock input, allowing for precise control of the shifting operation.

Robust Design Features

• Overvoltage Tolerance: Inputs are tolerant to 15V, enabling the device to be used in high-to-low level shifting applications, interfacing different logic families safely.
• High Reliability: It features superior ESD protection, exceeding 2000V (HBM) and 200V (MM), and latch-up performance exceeds 100mA per JESD 78 Class II Level B standards.
• Wide Operating Range: With an operating temperature range from -40°C to +125°C, this shift register is built for industrial and automotive-grade applications where environmental extremes are a factor.
• Compact Package: Housed in a space-saving TSSOP-16 package, it is ideal for high-density PCB designs.

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