器件名称:
CD54HC243_08
功能描述:
High-Speed CMOS Logic Quad-Bus Transceiver with Three-State Outputs
文件大小:
444.17KB 共14页
简 介:
Data sheet acquired from Harris Semiconductor SCHS168D CD54HC243, CD74HC243, CD54HCT243, CD74HCT243 High-Speed CMOS Logic Quad-Bus Transceiver with Three-State Outputs Description The ’HC243 and ’HCT243 silicon-gate CMOS three-state bidirectional noninverting buffers are intended for two-way asynchronous communication between data buses. They have high-drive-current outputs that enable high-speed operation when driving large bus capacitances. These circuits possess the low power dissipation of CMOS circuits and have speeds comparable to low-power Schottky TTL circuits. They can drive 15 LSTTL loads. The states of the output-enable (OEB, OEA) inputs determine both the direction of ow (A to B, B to A), and the three-state mode. November 1997 - Revised October 2003 Features Typical Propagation Delay (A to B, B to A) of 7ns at VCC = 5V, CL = 15pF, TA = 25oC [ /Title (CD74 HCT24 2, CD74 HC243 , CD74 HCT24 3) /Subject (High Speed CMOS Logic Quad- Three-State Outputs Buffered Inputs 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 Transition Times Signicant 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 (……
