CD74HC273M

Max Propagation Delay @ V, Max CL:	26ns @ 6V, 50pF
Base Part Number:	74HC273
Package / Case:	20-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-55°C ~ 125°C (TA)
Input Capacitance:	10pF
Current - Quiescent (Iq):	8µA
Voltage - Supply:	2 V ~ 6 V
Current - Output High, Low:	5.2mA, 5.2mA
Trigger Type:	Positive Edge
Series:	74HC
Clock Frequency:	60MHz
Number of Bits per Element:	8
Number of Elements:	1
Output Type:	Non-Inverted
Type:	D-Type
Function:	Master Reset
Part Status:	Active
Packaging:	Tube

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Introduction to CD74HC273M [Logic - Flip Flops]

CD74HC273M is a high-performance integrated circuit (IC) engineered to provide logic functions in a number of applications. It has two identical, independent, low to medium-power, 8-bit storage registers, each with its own set-reset (SR) latch. It is produced as an SOIC-14 standard package and manufactured at an accurate temperature range set from 0°C to 70°C.

General Overview

CD74HC273M provides various input and output signals for the user to interact with its appropriate application. It provides two serial-in, parallel-out (SIPO) shift registers and two 3-state outputs across two dedicated ports with each bit accessible via a set of 8-bit address lines on one side. Furthermore, the chip has its own associated timing devices built-in with specific dedicated pins.

Application Fields

CD74HC273M is an essential device for some of the most popular applications such as remote control, robotics and automation, clock control, automotive systems, and other telephone accessories. It is used for synchronous serial communication such as keypad encryption and decryption, and as a synchronous binary counter. It is also used in memory design for scratch pad RAM or FIFO use.Moreover, its powerful 4KHz HIGH to LOW toggle rate operation can enable its efficient use for communication interface applications. Its wide range of operations from LEVEL-SENSITIVE to EDGE-SENSITIVE operations, in whichever SIPO pattern, provides a great platform to design variety of circuits. With its low stand-by current, the CD74HC273M is also suitable for many battery operated applications.

Working Principle

CD74HC273M is a two-stage device, consisting of two independently accessible storage registers. When power is applied and the chip is in idle mode, the two separate storage registers, the Serial-Input Shift Register and the Set-Reset Latch, are updated simultaneously in their respective bits. The first stage is the Serial-Input Shift Register which shifts the serial data into a single 8-bit latch. The output of this shift register is robust and does not tend to overheat or leak current, so collisions can be easily avoided. It is controlled by the control pins S and R which either set or reset the latch, respectively.The second stage is the Set-Reset Latch which stores the data from the shift register and provides 3-state outputs. The latch is controlled by the G1, G2, and LD pins. Thus, this powerful latch enables the user to store the output at a longer duration or a rapid timing cycle. This feature makes CD74HC273M an intelligent, synchronized device, which is capable of controlling multiple devices if needed.

Conclusion

CD74HC273M is an incredibly powerful and intelligent integrated circuit (IC) designed to provide multiple control signals and memory storage capabilities, while at the same time being able to handle a wide range of temperatures. It is available in a SOIC-14 package and provides two 8-bit storage registers with 3-state outputs. It is used in eight different applications, from memory design to the telecommunications industry, and its low standby power saves up on the battery. With its powerful 4KHz HIGH to LOW toggle rate operation and its ability to set and reset independently, it is one of the most popular ICs on the market.

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