CD54HC540数据手册TI中文资料规格书

描述 Description

The ’HC540 and CD74HCT540 are Inverting Octal Buffers and Line Drivers with Three-State Outputs and the capability to drive 15 LSTTL loads. The ’HC541 and ’HCT541 are Non-Inverting Octal Buffers and Line Drivers with Three-State Outputs that can drive 15 LSTTL loads. The Output Enables (OE1\\) and (OE2\\) control the Three-State Outputs. If either OE1\\ or OE2\\ is HIGH the outputs will be in the high impedance state. For data output OE1\\ and OE2\\ both must be LOW.

特性 Features

• ’HC540, CD74HCT540 . . . . . . Inverting
• ’HC541, ’HCT541. . . . . . . . .Non-Inverting
• Buffered Inputs
• Three-State Outputs
• Bus Line Driving Capability
• Typical Propagation Delay = 9ns at VCC = 5V, CL = 15pF, TA = 25°C
• Fanout (Over Temperature Range)
• Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
• Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Wide Operating Temperature Range . . . –55°C to 125°C
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL Logic ICs
• HC Types
• 2V to 6V Operation
• High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V

• HCT Types
• 4.5V to 5.5V Operation
• Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
• CMOS Input Compatibility, Il ≤ 1µA at VOL, VOH