器件名称:
CD54HC245F3A
功能描述:
High-Speed CMOS Logic Octal-Bus Transceiver, Three-State, Non-Inverting
文件大小:
261.97KB 共12页
简 介:
CD54HC245, CD74HC245, CD54HCT245, CD74HCT245 Data sheet acquired from Harris Semiconductor SCHS119A November 1997 - Revised May 2003 High-Speed CMOS Logic Octal-Bus Transceiver, Three-State, Non-Inverting Description The CD54HC245, CD54HCT245, and CD74HC245, CD74HCT245 are high-speed octal three-state bidirectional transceivers intended for two-way asynchronous communication between data buses. They have high drive current outputs which enable high-speed operation while driving large bus capacitances. They provide the low power consumption of standard CMOS circuits with speeds and drive capabilities comparable to that of LSTTL circuits. The CD54HC245, CD54HCT245, CD74HC245 and CD74HCT245 allow data transmission of the B bus or from the B bus to the A bus. The logic level at the direction input (DIR) determines the direction. The output enable input (OE), when high, puts the I/O ports in the high-impedance state. The HC/HCT245 is similar in operation to the HC/HCT640 and the HC/HCT643. Features Buffered Inputs [ /Title (CD54 HC245 , CD54 HCT24 5, CD74 HC245 , CD74 HCT24 5) /Subject (High Speed Three-State Outputs Bus Line Driving Capability Typical Propagation Delay (A to B, B to A) 9ns at VCC = 5V, CL = 15pF, TA = 25oC Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads Wide Operating Temperature Range . . . -55oC to 125oC Balanced Propagation Delay and Transi……
