CY74FCT2573T中文资料具有三态输出和串联阻尼电阻的八路 D 类透明锁存器数据手册TI规格书

描述 Description

The CY74FCT2573T is an 8-bit, high-speed CMOS, TTL-compatible buffered latch with 3-state outputs that is ideal for driving high-capacitance loads, such as memory and address buffers. On-chip 25- termination resistors at the outputs reduce system noise caused by reflections. The CY74FCT2573T can replace the CY74FCT573T to reduce noise in an existing design. When the latch-enable (LE) input is high, the flip-flops appear transparent to the data. Data that meets the required setup times are latched when LE transitions from high to low. Data appears on the bus when the output-enable (OE\\) input is low. When OE\\ is high, the bus output is in the high-impedance state. In this mode, data can be entered into the latches. 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.

特性 Features

• Function and Pinout Compatible With the Fastest Bipolar Logic
• Reduced VOH (Typically = 3.3 V) Version of Equivalent FCT Functions
• Ioff Supports Partial-Power-Down Mode Operation
• 3-State Outputs
• 200-V Machine Model (A115-A)
• Fully Compatible With TTL Input and Output Logic Levels
• 12-mA Output Sink Current 15-mA Output Source Current