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CY74FCT821ATQCTCYN/a1500avai10-Bit Bus Interface Flip-Flops with 3-State Outputs
CY74FCT821CTQCTCYPRESSN/a2000avai10-Bit Bus Interface Flip-Flops with 3-State Outputs
CY74FCT821CTQCTTIN/a1763avai10-Bit Bus Interface Flip-Flops with 3-State Outputs
CY74FCT821CTQCTBB/TIN/a74avai10-Bit Bus Interface Flip-Flops with 3-State Outputs


CY74FCT821CTQCT ,10-Bit Bus Interface Flip-Flops with 3-State Outputslogic diagram (positive logic)1OE13CPC023YQ02DD00To Nine Other Channels2POST OFFICE BOX 655303 • DA ..
CY74FCT821CTQCT ,10-Bit Bus Interface Flip-Flops with 3-State Outputsmaximum ratings” may cause permanent damage to the device. These are stress ratings only, andfuncti ..
CY74FCT821CTQCT ,10-Bit Bus Interface Flip-Flops with 3-State Outputs/sc/package.FUNCTION TABLEINTERNALINPUTSOUTPUTSFUNCTIONOE D CP Q YH X ↑ L Z ZH L ↑ L ZH H ↑ H ZLoad ..
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CY74FCT821ATQCT-CY74FCT821CTQCT
10-Bit Bus Interface Flip-Flops with 3-State Outputs
Significantly Improved Noise
Characteristics
Ioff Supports Partial-Power-Down Mode
Operation
Matched Rise and Fall Times Fully Compatible With TTL Input and
Output Logic Levels
ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
64-mA Output Sink Current
32-mA Output Source Current
High-Speed Parallel Register With
Positive-Edge-Triggered D-Type Flip-Flops
3-State Outputs
description

This bus-interface register is designed to eliminate the extra packages required to buffer existing registers and
provide extra data width for wider address/data paths or buses carrying parity. The CY74FCT821T is a
10-bit-wide buffered version of the popular CY74FCT374 function. This device is ideal for use as an output port
requiring high IOL/IOH.
This device is designed for high-capacitance load drive capability, while providing low-capacitance bus loading
at both inputs and outputs. Outputs are designed for low-capacitance bus loading in the high-impedance state.
This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,
preventing damaging current backflow through the device when it is powered down.
PIN DESCRIPTION

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.259
GND259
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