SN74ALS280DR Integrated Circuits (ICs) |
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Allicdata Part #: | 296-5054-2-ND |
Manufacturer Part#: |
SN74ALS280DR |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC 9-BIT GEN/CHKER 14SOIC |
More Detail: | Parity Generator 9-Bit 14-SOIC |
DataSheet: | SN74ALS280DR Datasheet/PDF |
Quantity: | 1000 |
1 +: | 0.00000 |
Series: | 74ALS |
Packaging: | Tape & Reel (TR) |
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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.The SN74ALS280DR is a parity generator and checker logic circuit of the Advanced Low-power Schottky (ALS) series, created by Texas Instruments that conforms to the low-power TTL (LPTTL) standard. TTL logic circuits are widely-used in the fields of digital logic due to the array of logic functions that can be composed from such devices. The SN74ALS280DR is classified as one of the few parity generator and checker circuits of the TTL variety, and is regarded as a highly reliable and efficient tool used to detect transmission errors in digital transmissions.
At its core, the SN74ALS280DR is a single monolithic silicon integrated circuit that should be operated at 4.5 V to 6 V due to its TTL compatibility. The circuit consists of a 8-bit parity generator and 8-bit parity checker that are connected to the same common 8-bit bus. The purpose of the circuit is to detect errors while transmitting sets of 8-bit digital count data, mainly from a serial-input/parallel-output register.
The SN74ALS280DR circuit can be used to generate a 6-bit Hamming code parity bit for sets of 8-bit words. The 8-bit word is combined with a calculated parity bit to form a 9-bit code word, which is then transmitted via a serial stream. The SN74ALS280DR parity checking feature can then be used to detect whether the parity bit has inadvertently changed due to a fault in the transmission process. The circuit will then output the original 8-bit word if no problems have occurred; if a parity error is detected, it will output the received 8-bit word with the parity bit flipped.
The SN74ALS280DR is often used in data communications, data acquisition systems, and other digital data transmission applications. Its primary purpose is to protect against data integrity losses in the event of line congestion or other transmission disruptions. The SN74ALS280DR’s data security features are one of the circuit’s key features, as it ensures that data can be correctly received without any errors or data loss.
The circuit operates in one of two modes. When set to the Transmit mode, it will generate the parity bits for the 8-bit words that are being transmitted, and apply it to the 9-bit code word for transmission. In the Receive mode, the circuit verifies the parity bits of the incoming words, then the output from the Receive line indicates either the original 8-bit word (if parity is correct) or a version with the parity bit flipped (if parity is incorrect).
Additionally, the SN74ALS280DR contains several unique input and output ports. The D7-D0 inputs, together with the G (Mode) input, provide access to the parity generator/checker. The COUT (Carry Out) data output is provided by the parity generator and is dependent on the state of the CIN (Carry In) input. The R output is dependent on the state of the 8-bit word input when in Receive mode, indicating the presence of a parity error.
The SN74ALS280DR is a reliable, low-power parity generator and checker circuit that can be used in a wide variety of digital logic applications. Its compact size, low power requirements and high data-transmission support make it an ideal choice for digital systems that require robust data security and parity functionality.
The specific data is subject to PDF, and the above content is for reference
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