CY74FCT821T 10-Bit Bus Interface Flip-Flops with 3-State Outputs | TI.com

CY74FCT821T (ACTIVE)

10-Bit Bus Interface Flip-Flops with 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.

Features

  • Function, Pinout, and Drive Compatible With FCT, F Logic, and AM29821
  • Reduced VOH (Typically = 3.3 V) Version of Equivalent FCT Functions
  • Edge-Rate Control Circuitry for 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

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Parametrics Compare all products in D-type flip-flop

 
Technology Family
VCC (Min) (V)
VCC (Max) (V)
Bits (#)
Voltage (Nom) (V)
F @ nom voltage (Max) (Mhz)
ICC @ nom voltage (Max) (mA)
tpd @ Nom Voltage (Max) (ns)
IOL (Max) (mA)
IOH (Max) (mA)
3-state output
Rating
Operating temperature range (C)
CY74FCT821AT CY74FCT821BT CY74FCT821CT
FCT     FCT     FCT    
4.75     4.75     4.75    
5.25     5.25     5.25    
10     10     10    
5     5     5    
70     70     70    
0.2     0.2     0.2    
10     7.5     6    
64     64     64    
-32     -32     -32    
Yes     Yes     Yes    
Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85