CY54FCT574T数据手册TI中文资料规格书

描述 Description

The \\x92FCT574T 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 \\x92FCT574T are identical to \\x92FCT374T, except for a flow-through pinout to simplify board design. The eight flip-flops in the \\x92FCT574T 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.

特性 Features

• 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
• CY54FCT574T
• 32-mA Output Sink Current
• 12-mA Output Source Current

• CY74FCT574T
• 64-mA Output Sink Current
• 32-mA Output Source Current

• 3-State Outputs