See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

DW | 24

Temp:

I (-40 to 85)

ECO Plan:

Green (RoHS & no Sb/Br)

SN74ABT833DW


8-Bit to 9-Bit Parity Bus Transceivers

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Texas Instruments SN74ABT833DW

The 'ABT833 8-bit to 9-bit parity transceivers are designed for communication between data buses. When data is transmitted from the A bus to the B bus, a parity bit is generated. When data is transmitted from the B bus to the A bus with its corresponding parity bit, the open-collector parity-error () output indicates whether or not an error in the B data has occurred. The output-enable ( and ) inputs can be used to disable the device so that the buses are effectively isolated. The 'ABT833 provide true data at their outputs.

A 9-bit parity generator/checker generates a parity-odd (PARITY) output and monitors the parity of the I/O ports with the flag. is clocked into the register on the rising edge of the clock (CLK) input. The error flag register is cleared with a low pulse on the clear () input. When both and are low, data is transferred from the A bus to the B bus and inverted parity is generated. Inverted parity is a forced error condition that gives the designer more system diagnostic capability.

 

To ensure the high-impedance state during power up or power down, should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

The SN54ABT833 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT833 is characterized for operation from -40°C to 85°C.

 

 

 

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