SN74ALS280DE4

Series:	74ALS
Packaging:	Tube
Part Status:	Obsolete
Logic Type:	Parity Generator/Checker
Number of Circuits:	9-Bit
Current - Output High, Low:	2.6mA, 24mA
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:	74ALS280

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Logic - Parity Generators and Checkers

Many applications in logic require the use of parity generators and checkers. The SN74ALS280DE4 is a device built specifically for this purpose. It is a 16-bit by 8-bit parity generator and checker that falls into the logic family of devices.The SN74ALS280DE4 is composed of two 8-bit parity generators and two 8-bit parity checkers. The two parity generators operate on the 8 most significant bits (MSB) of the 16-bit latch, while the two parity checkers operate on the 8 least significant bits (LSB) of the 16-bit latch. The SN74ALS280DE4 is an active device and is powered by an external TTL or CMOS logic supply.When operating, the SN74ALS280DE4 parity generator and checker will generate 8-bit odd and even parity generators and checkers for the most significant 8-bits of a 16-bit latch. This is done by running the data bus through the XNOR logic gates and the XOR logic gates, respectively. The outputs of the parity generator will be the Odd (ODD) and the Even (EVEN) signals. The SN74ALS280DE4 also has two 8-bit parity checkers operating off the 8-bit latch, these outputs are designated as the Odd (ODD) and the Even (EVEN) signals.The SN74ALS280DE4 operates as a digital buffer and with the use of external connections, the chip can be set to either generate or check parity. This setting is accomplished by toggling the logic inputs. When the part is set to ‘generate’ then the EVEN and ODD parity signals will be generated, when set to ‘verify’, the EVEN and ODD parity checkers will be run. The ODD and EVEN parity signals can be fed into various logic functions or a register, which can then be used to control various functions.The SN74ALS280DE4 parity generator and checker is an efficient and versatile device with a wide variety of potential applications. It can be used in a variety of communication and data processing systems, including industrial, military, and other applications. In addition, the SN74ALS280DE4 can be integrated into larger microprocessor systems to ensure reliable communication and data transmission.The SN74ALS280DE4 can be used for applications such as error checking in digital data transmission systems, as a watchdog in computer systems, and as a data security function in various communication networks. It can also be used to verify system states and to check memory integrity.The SN74ALS280DE4 is designed to operate in a variety of temperatures, from -55°C to 125°C. It also meets military standards for temperature, vibration, and shock. The SN74ALS280DE4 also has a low power consumption and a small package size. Due to its low-power operation and its versatile operation, the SN74ALS280DE4 is an ideal choice for use in numerous applications.In conclusion, the SN74ALS280DE4 is an ideal choice for parity generator and checker applications. It is a low-cost solution to error checking, data transmission, and system control applications. The versatility, temperature ratings, and low-power operation of the SN74ALS280DE4 make it the perfect solution for any application requiring the use of a parity generator and checker.

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