SN74F377ADWR Integrated Circuits (ICs)

Max Propagation Delay @ V, Max CL:	9ns @ 5V, 50pF
Base Part Number:	74F377
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 70°C (TA)
Current - Quiescent (Iq):	72mA
Voltage - Supply:	4.5 V ~ 5.5 V
Current - Output High, Low:	1mA, 20mA
Trigger Type:	Positive Edge
Series:	74F
Clock Frequency:	125MHz
Number of Bits per Element:	8
Number of Elements:	1
Output Type:	Non-Inverted
Type:	D-Type
Function:	Standard
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Flip flops are basic digital logic circuits that are used to store binary information. They are essential components in digital systems, performing functions such as controlling data flow, synchronizing operations, and counting applications. One of the most popular and widely used flip flops is the SN74F377ADWR, a dual D-type flip-flop integrated circuit with two data inputs (D1 and D2), two clock inputs (CP1 and CP2), two outputs (Q1 and Q2), and two active-high reset (R1 and R2) inputs. This flip flop is packaged in two different packages - the 16-pin small outline integrated circuit (SOIC) and the 16-pin Plastic Dual-In-Line Package (PDIP).

Applications

The SN74F377ADWR flip flop is used in many applications, both commercial and personal. In industrial control systems, the flip flop is often used as a data-synchronizing device or address register in memory circuits. Automotive and medical applications also employ the device to convert binary data into parallel form, while avionics and defense systems typically use it to store binary digits and count sequences.The flip flop is also used in a wide variety of consumer electronic applications such as VCRs, CD players, video games, and home computers. For example, video game designers typically use the SN74F377ADWR as one element of a digital game controller, allowing game players to input game choices. Similarly, CD players use the SN74F377ADWR to convert binary data from CD digital audio tracks into parallel form for sound amplification from a speaker system.

Working Principle

The basic operation of the SN74F377ADWR flip flop is that when the clock input (CP1 or CP2) is active (high or low), the current logic status of D1 or D2 is transferred to the outputs Q1 or Q2. This process is known as edge-triggering. Furthermore, the rising or falling edge of a clock pulse causes a change in the logic level of the outputs Q1 and Q2.The inputs R1 and R2 control the resetting of the flip flop. When both R1 and R2 are active, the outputs Q1 and Q2 will be forced to a low state, regardless of the state of the clock and data input signals. When the reset signals are inactive (high), the flip flop operates normally.The flip flop also has a buffered enable input (EN1 and EN2) that, when active, allows the device to be clocked and store data. When it is inactive, the outputs will remain static.

Conclusion

The SN74F377ADWR flip flop is an extremely versatile device that is well suited for a wide variety of applications. Its ease of integration into digital systems, along with its ability to store data on either the rising or falling clock edge make it a popular choice for both commercial and home users. Its buffered enable input also adds reliability and functionality, making it an excellent choice for digital systems.

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