SN74AS280DR Integrated Circuits (ICs)

Series:	74AS
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Logic Type:	Parity Generator/Checker
Number of Circuits:	9-Bit
Current - Output High, Low:	2mA, 20mA
Voltage - Supply:	4.5V ~ 5.5V
Operating Temperature:	0°C ~ 70°C
Mounting Type:	Surface Mount
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	14-SOIC
Base Part Number:	74AS280

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Logic circuits have been around since the invention of the transistor and have become increasingly important in the modern age. From high speed data processing to embedded systems, logical circuitry has proved to be an invaluable tool in the electronics domain. In terms of logic, one particular type of circuit is the Parity Generator and Checker. The SN74AS280DR is a type of Parity Generator and Checker circuit which is widely used in computing systems.The SN74AS280DR is an 8 bit even parity type logic circuit. It is designed to detect any odd number of logic pulse transitions on the 8 bit data input. When the data input is fed into the circuit, it will check to see if the number of positive-going and negative-going edges on the input is an even number. If it is an even number, an output is given which is of the same polarity as the input. If the number of edges, either positive-going or negative-going, is odd, the output is of the opposite polarity. The SN74AS280DR runs on both 5V and 3V circuits and its operating temperature range is 0°C to 70°C.The SN74AS280DR is used in a variety of applications in the computing industry. As a parity generator and checker circuit, it provides a great level of protection against data corruption in digital communication systems. It can be used in applications such as memory checkers, game consoles, streaming audio and video, and in the field of Industrial Automation.The circuit is an 8 bit even parity generator and checker and is usually used in applications which require more than 4 bits of data. The 8 bits of data are fed into two 4 bit inputs, A and B. These two inputs carry the 8 bit data which is converted into an 8 bit parallel output. A parity bit is also outputted following these 8 bits of data which will show whether the data is even (parity bit is same as input data) or odd (parity bit is opposite to input data). The output of the parity bit can be used to detect any errors in the data or in the transmission if it is used in a digital communication system.The SN74AS280DR is a TTL compatible Parity Generator and Checker circuit. TTL compatible devices are those which have been designed to be used in components which follow the TTL logic standard. This logic standard is widely used in digital technology applications, including computers. The device also has built in power on reset (POR) and power down detection (PPD) circuitry which allows it to detect when the power is either on or off and will show the corresponding output accordingly.In addition to its TTL compatibility and power management functionality, the SN74AS280DR also offers good thermal stability performance and low power consumption. It has an operating power consumption of just 0.3mA (at 3V), making it suitable for applications which consume large amounts of data and power.Overall, the SN74AS280DR is a reliable, low power, and cost-effective logic circuit which is used for parity generation and checking in all sorts of computing applications. With its built-in power management and TTL compatibility, it provides a great solution for many of the parity checking tasks that are necessary in digital technology.

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