Octal D-Type Registers with 3-State Outputs - CY54FCT374T


Octal D-Type Registers with 3-State Outputs



The \x92FCT374T devices are high-speed, low-power, octal D-type flip-flops, featuring separate D-type inputs for each flip-flop. These devices have 3-state outputs for bus-oriented applications. A buffered clock (CP) and output-enable (OE\) inputs are common to all flip-flops. The eight flip-flops in the \x92FCT374T store the state of their individual D inputs that meet the setup-time and hold-time requirements on the low-to-high CP transition. When OE\ is low, the contents of the eight flip-flops are available at the outputs. When OE\ is high, the outputs are in the high-impedance state. The state of OE\ does not affect the state of the flip-flops.

These devices are 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.


  • Function, Pinout, and Drive Compatible With FCT and F Logic
  • Reduced VOH (Typically = 3.3 V) Versions 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)
  • Edge-Triggered D-Type Inputs
  • 250-MHz Typical Switching Rate
  • CY54FCT374T
    • 32-mA Output Sink Current
    • 12-mA Output Source Current
  • CY74FCT374T
    • 64-mA Output Sink Current
    • 32-mA Output Source Current
  • 3-State Outputs

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Parametrics Compare all products in Flip-Flop/Latch/Registers

Technology Family
VCC (Min) (V)
VCC (Max) (V)
Bits (#)
F @ Nom Voltage (Max) (Mhz)
ICC @ Nom Voltage (Max) (mA)
tpd @ Nom Voltage (Max) (ns)
Input Type
3-State Output
Output Drive (IOL/IOH) (Max) (mA)
Output Type
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
FCT    FCT   
4.75    4.75   
5.25    5.25   
8    8   
70    70   
0.2    0.2   
11    11   
TTL    TTL   
Yes    Yes   
64/-32    64/-32   
Military    Catalog   
-55 to 125    -40 to 85   
See datasheet (CDIP)
20LCCC: 79 mm2: 8.89 x 8.89(LCCC)   
20SOIC: 132 mm2: 10.3 x 12.8(SOIC)
20SSOP: 52 mm2: 6 x 8.65(SSOP)