These 10-bit Flip-Flops SN54AS821 SN54AS822 SN74AS821 SN74AS822 feature 3-state outputs designed specifically for driving highly-capacitive or relatively low-impedance loads. They are particularly suitable for implementing wider Buffer Registers I/O ports, bidirectional bus drivers with parity, and working Registers The ten Flip-Flops are edge-triggered D-type Flip-Flops On the positive transition of the Clock the Q outputs on the AS821 will be true, and on the AS822 will be complementary to the data input. A buffered output-control input CAN be used to place the ten outputs in either a normal Logic state (high or low levels) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive the bus lines in a bus-organized system without need for Interface or pullup components. The output control (OC) does not affect the internal operation of the Flip-Flops Old data CAN be retained or new data CAN be entered while the outputs are in the high-impedance state. The SN54AS family is characterized for operation over the full military temperature range of 55C to 125C. The SN74AS family is characterized for operation from 0C to 70C. By Texas Instruments
SN74AS822 's PackagesSN74AS822 's pdf datasheet

SN74AS822 Pinout, Pinouts
SN74AS822 pinout,Pin out
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