器件名称:
54LS125
功能描述:
Quad TRI-STATE Buffers
文件大小:
122.92KB 共6页
简 介:
54LS125A DM54LS125A DM74LS125A Quad TRI-STATE Buffers June 1989 54LS125A DM54LS125A DM74LS125A Quad TRI-STATE Buffers General Description This device contains four independent gates each of which performs a non-inverting buffer function The outputs have the TRI-STATE feature When enabled the outputs exhibit the low impedance characteristics of a standard LS output with additional drive capability to permit the driving of bus lines without external resistors When disabled both the output transistors are turned off presenting a high-impedance state to the bus line Thus the output will act neither as a significant load nor as a driver To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels the disable time is shorter than the enable time of the outputs Features Y Alternate Military Aerospace device (54LS125) is available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package TL F 6387 – 1 Order Number 54LS125ADMQB 54LS125AFMQB 54LS125ALMQB DM54LS125AJ DM54LS125AW DM74LS125AM or DM74LS125AN See NS Package Number E20A J14A M14A N14A or W14B Function Table YeA Inputs A L H X H e High Logic Level L e Low Logic Level X e Either Low or High Logic Level Hi-Z e TRI-STATE (Outputs are disabled) Output C L L H Y L H Hi-Z TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 6387 RRD-B30M105 Printed in U ……
