Product Overview: 74HCT165N by NXP Semiconductors

The 74HCT165N is a high-speed Si-gate CMOS device and is pin-compatible with low-power Schottky TTL (LSTTL). It is fabricated with silicon gate C2MOS technology and is a crucial component in digital systems where parallel-to-serial data conversion is required.

This integrated circuit is designed for 8-bit serial or parallel input/output applications and is particularly well-suited for interfacing with microprocessors. With its wide operating voltage range and low power consumption, it is commonly used in computer and computer-peripheral applications, as well as in instrumentation and control systems.

Key Features:

• Logic Type: 8-bit parallel-load shift register
• Operating Voltage: 4.5V to 5.5V, making it compatible with TTL levels
• Shift Register Function: Serial to Parallel, Parallel to Serial
• Output Capability: Standard outputs capable of driving 10 LSTTL loads
• High Noise Immunity: The 74HCT165N features a typical input hysteresis voltage of 1V at VCC = 5V and TA = 25°C
• Speed: High-speed operation with a typical clock frequency of 100 MHz
• Package: The device is housed in a plastic 16-pin DIP (Dual In-line Package)

Functional Description:

The 74HCT165N has an 8-bit shift register that feeds an 8-bit D-type storage register. Inputs include a Master Reset (MR) pin, which clears the register, setting all outputs low. The Shift/Load (SH/LD) input controls the loading of data into the shift register. When SH/LD is low, parallel data from the eight inputs (A-H) is loaded into the register. When SH/LD is high, the data is shifted on the positive-going transitions of the clock pulse (CP).

The device also features a serial input (Ds) for cascading multiple devices. When multiple 74HCT165N devices are cascaded, the serial output (Q7') from one device can be connected to the serial input of the next device, enabling the creation of shift registers of virtually any length.

With its robust design and ease of use, the 74HCT165N from NXP Semiconductors is a reliable choice for your data management needs in a variety of digital applications.