Encyclopedia Entry: 74FCT377ATQG8

Product Overview

Category

The 74FCT377ATQG8 belongs to the category of integrated circuits (ICs) and specifically falls under the family of flip-flops.

Use

This product is primarily used in digital electronics for storing and transferring binary data. It serves as a fundamental building block in various applications, including memory units, registers, counters, and data synchronization circuits.

Characteristics

• The 74FCT377ATQG8 is a high-speed octal D-type flip-flop with transparent inputs.
• It operates on a wide voltage range, typically between 4.5V and 5.5V.
• This IC offers excellent noise immunity and low power consumption.
• It features a latch enable input that allows data to be transferred to the outputs when enabled.
• The device is designed to work with both TTL and CMOS logic families.

Package and Quantity

The 74FCT377ATQG8 is available in a standard 20-pin TSSOP (Thin Shrink Small Outline Package). It is commonly supplied in reels or tubes, with a typical quantity of 250 units per reel.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to Vcc
• Output Voltage Range: 0V to Vcc
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 6 ns (max)
• Output Current: ±24 mA

Pin Configuration

The pin configuration of the 74FCT377ATQG8 is as follows:

+---+--+---+ Q0 |1 20| Vcc Q1 |2 19| D0 Q2 |3 18| D1 Q3 |4 17| D2 Q4 |5 16| D3 Q5 |6 15| D4 Q6 |7 14| D5 Q7 |8 13| D6 GND |9 12| D7 LE |10 11| CLK +--------+

Functional Features

• Transparent latch enable (LE) input allows data to be transferred to the outputs when enabled.
• Positive-edge triggered clock input (CLK) controls the storage and transfer of data.
• Eight individual D-type flip-flops with common clock and latch enable inputs.
• Outputs (Q0-Q7) represent the stored values of the corresponding inputs (D0-D7) at the last clock transition.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient data processing in time-critical applications.
• Wide voltage range compatibility allows for versatile integration into various digital systems.
• Excellent noise immunity ensures reliable data storage and transfer.
• Low power consumption contributes to energy-efficient designs.

Disadvantages

• Limited number of flip-flops per IC may restrict its application in larger-scale systems.
• The TSSOP package may require careful handling during assembly due to its small size.

Working Principles

The 74FCT377ATQG8 operates based on the principles of sequential logic. When the clock input (CLK) receives a positive-edge trigger, the state of the D-type flip-flops is updated according to the values present at the corresponding data inputs (D0-D7). The transparent latch enable (LE) input determines whether the updated data is transferred to the outputs (Q0-Q7). This mechanism allows for synchronized storage and transfer of binary data.

Application Field Plans

The 74FCT377ATQG8 finds extensive application in various digital systems, including but not limited to: - Memory units and registers in microprocessors and microcontrollers. - Data synchronization circuits for reliable communication between different components. - Counters and frequency dividers in frequency synthesizers and clock generators. - Address decoders and multiplexers in memory addressing schemes.

Alternative Models

For similar functionality and compatibility, the following alternative models can be considered: - 74HC377: A CMOS-based octal D-type flip-flop with transparent inputs. - SN74LS377: A TTL-based octal D-type flip-flop with transparent latch enable. - CD4013B: A CMOS-based dual D-type flip-flop with set and reset inputs.

These alternatives provide comparable features and can be suitable replacements depending on specific design requirements.

---

Word count: 570 words