的BiCMOS FCT接口逻辑，八路缓冲器/线路驱动器，三态 BiCMOS FCT Interface Logic, Octal Buffers/Line Drivers, Three-State
Description
The CD74FCT540 and CD74FCT541 octal buffers/line drivers use a small geometry BiCMOS technology. The output stage is a combination of bipolar and CMOS transistors that limits the output HIGH level to two diode drops below VCC. This resultant lowering of output swing 0V to 3.7V reduces power bus ringing a source of EMI and minimizes VCC bounce and ground bounce and their effects during simultaneous output switching. The output configuration also enhances switching speed and is capable of sinking 64 milliamperes.
Features
• Buffered Inputs
• Typical Propagation Delay: 6.4ns at VCC = 5V, TA = 25℃, CL = 50pF
• CD74FCT540
- Inverting
• CD74FCT541
- Noninverting
• SCR Latchup Resistant BiCMOS Process and Circuit Design
• Speed of Bipolar FAST™/AS/S
• 64mA Output Sink Current
• Output Voltage Swing Limited to 3.7V at VCC = 5V
• Controlled Output Edge Rates
• Input/Output Isolation to VCC
• BiCMOS Technology with Low Quiescent Power