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SN54AS286

Features: • Generate Either Odd or Even Parity for Nine Data Lines• Cascadable for n-Bit Parity• Direct Bus Connection for Parity Generation or Checking by Using the Parity I/O Port• Glitch-Free Bus During Power Up/Down• Package Options Include Plastic Small-Outline (...

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SeekIC No. : 004496688 Detail

SN54AS286: Features: • Generate Either Odd or Even Parity for Nine Data Lines• Cascadable for n-Bit Parity• Direct Bus Connection for Parity Generation or Checking by Using the Parity I/O Por...

SN54AS286 Data Sheet

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Part Number:
SN54AS286
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Generate Either Odd or Even Parity for
  Nine Data Lines
• Cascadable for n-Bit Parity
• Direct Bus Connection for Parity
  Generation or Checking by Using the
  Parity I/O Port
• Glitch-Free Bus During Power Up/Down
• Package Options Include Plastic
  Small-Outline (D) Packages, Ceramic Chip
  Carriers (FK), and Standard Plastic (N) and
  Ceramic (J) 300-mil DIPs


Pinout

Connection Diagram


Specifications

Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Voltage applied to a disabled 3-state output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V
Operating free-air temperature range, TA:SN54AS286 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C to 125°C
SN74AS286 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.


Description

The SN54AS286 and SN74AS286 universal 9-bit parity generators/checkers feature a local output for parity checking and a 48-mA bus-driving parity input/output (I/O) port for parity generation/checking. The word-length capability of SN54AS286 and SN74AS286 is easily expanded by cascading.

The transmit (XMIT) control input of SN54AS286 and SN74AS286 is implemented specifically to accommodate cascading. When XMIT is low, the parity tree is disabled and PARITY ERROR remains at a high logic level regardless of the input levels. When XMIT is high, the parity tree is enabled. PARITY ERROR indicates a parity error when either an even number of inputs (AI ) are high and PARITY I/O is forced to a low logic level, or when an odd number of inputs are high and PARITY I/O is forced to a high logic level.

The I/O control circuitry of SN54AS286 and SN74AS286 was designed so that the I/O port remains in the high-impedance state during power up or power down to prevent bus glitches.

The SN54AS286 is characterized for operation over the full military temperature range of 55°C to 125°C. The SN74AS286 is characterized for operation from 0°C to 70°C.




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