SN74F280BN

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The SN74F280BN is a Parity Generator and Checker device specifically designed for data parity checking and generation that belongs to the Logic series. It allows parity generation and detection on any 4- or 8-bit wide data hexadecimal wordslike the SN74F280B, but with the added capability of parity checking over 8-bit wide bytes of serial data.TheSN74F280BNcomprises two four-bit parity circuits which generate double parity. The first circuit checks the low-order bits of the 8-bit word and generates single parity, while the other checks the high-order bits of the 8-bit word and generates another bit or a separate single parity bit.

The SN74F280BN is specifically designed for data integrity checking and generation in computers, communications systems and other data handling applications. Theparity bit is available at the output, taking either logic “1”, if the parity is even, orlogic “0”, if the parity is odd. The SN74F280BN has a convenient hexadecimal input format so that it can be easily interfaced to digital bus structures. The logic of the circuits is designed to ensure that the parity bits generated and checked are true parity bits.The integrated circuit’s fast propagation delay of 6ns and low quiescent supply current of 2mA arethe main strengths of theSN74F280BN.

The working principle of the SN74F280BN is based on the generation of single or double parity bit checking. The device has an 8-bit data input and two separate output pins, which provides double parity. The 8-bit data can either behexadecimal nibbles or 8-bit serial bytes, depending on how it is wired.The device has adifferential input logic, having a logic “1” as the “Hi” level at the input, and a logic “0” as the “Lo” level at the input. The SN74F280BN is designed to check for both even and odd parity bits. When an even parity bit is applied, the device will check all 8-bit data input to verify that the parity bit is correctly generated. Similarly, when an odd parity bit is applied, the device will check all 8-bit data input to verify that the parity bit is correctly generated.

TheSN74F280BN can be used in many automation and communication systems, including data transmission, memory systems, and microcontrollers. This device can be used in auto transmission and satellite communication systems for parity checking and generation in applications like check digits andhamming codes. Also, it can be used in data acquisition and control systems for real-time operations, for example for parity checking and generation for data transfers, data logging, and error detection and correction. Last but not least, it can be used in embedded systems such as sensors, motor control, and embedded controllers as well as medical devices.

In conclusion, the SN74F280BN is an excellent parity generator and checker device belonging to the Logic series. It is specifically designed for data parity checking and generation, with the added capability ofparity checking over 8-bit wide bytes of serial data.The device has a convenient hexadecimal input format,differential input logic, fast propagation delay, and low quiescent supply current that make it suitable for many applications, such as automotive transmissions, satellite communication systems, embedded systems, and medical devices.

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