SN74LS377NG4

The SN74LS377NG4 is a quad D-type flip-flop integrated circuit (IC) produced by Texas Instruments, part of the 74LS (Low Power Schottky) series. This device is designed for use in digital circuits and is particularly useful for data storage and transfer applications. Below is a detailed description of its features and specifications:

General Description:

• Type: Quad D-type Flip-Flop
• Package: The "NG4" designation indicates that this IC is available in a 16-pin dual in-line package (DIP) format, which is suitable for through-hole mounting on printed circuit boards (PCBs).
• Functionality: The SN74LS377 consists of four independent D-type flip-flops, each capable of storing one bit of data. The flip-flops are triggered by a common clock input, allowing for synchronous operation.

Key Features:

• Data Inputs: Each flip-flop has a data input (D) that accepts the data to be stored.
• Clock Input: A common clock input (CLK) is used to control when the data is sampled and transferred to the output.
• Output: Each flip-flop has a complementary output (Q and Q̅), providing both the stored data and its inverse.
• Set and Reset: The device includes asynchronous set (PRE) and reset (CLR) inputs for each flip-flop, allowing for immediate control of the output states regardless of the clock signal.
• Low Power Consumption: As part of the LS series, the SN74LS377 is designed to operate with low power consumption, making it suitable for battery-operated devices and applications where power efficiency is critical.

Electrical Characteristics:

• Supply Voltage (Vcc): Typically operates at 4.75V to 5.25V.
• Input Voltage Levels: The device recognizes standard TTL logic levels, with a minimum high-level input voltage (VIH) of 2.0V and a maximum low-level input voltage (VIL) of 0.8V.
• Propagation Delay: The typical propagation delay from the clock input to the output is around 15 ns, which is suitable for many high-speed applications.
• Fan-out: The output can drive multiple inputs, typically up to 10 standard TTL loads.

Applications:

The SN74LS377 is commonly used in various digital applications, including:

• Data storage registers
• Shift registers
• Temporary data holding
• State machines
• Synchronous counters

Pin Configuration:

The 16-pin DIP package has a specific pin configuration, with each pin designated for specific functions such as data inputs, clock, set/reset, and outputs. The typical pinout includes:

• Pins 1-4: Q outputs for flip-flops 1-4
• Pins 5-8: D inputs for flip-flops 1-4
• Pin 9: Common clock input (CLK)
• Pins 10-12: Asynchronous clear (CLR) and preset (PRE) inputs
• Pins 13-16: Ground and power supply connections

Conclusion:

The SN74LS377NG4 is a versatile and reliable quad D-type flip-flop that is widely used in digital electronics for its ability to store and manipulate binary data efficiently. Its low power consumption, synchronous operation, and ease of integration into various circuits make it a popular choice among engineers and designers in the field of digital design.