74LS126A Datasheet | National Semiconductor

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 mon bus to opposite logic levels the disable time is shorter than the enable time of the outputs Connection Diagram Dual-In-Line Package TL F 6388 - 1 Order Number DM74LS126AM or DM74LS126AN See NS Package Number M14A or N14A Function Table Ye A 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 H H L Y L H Hi-Z TRI-STATE is a registered trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation TL F 6388 RRD-B30M105 Printed in U S A Absolute Maximum Ratings (Note) Supply Voltage Input Voltage Operating Free Air Temperature Range Storage Temperature Range 7V 7V 0 C to a 70 C b 65 C to a 150 C Note The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot be guaranteed The device should not be operated at these limits The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings The ‘‘Remended Operating Conditions’’ table will define the conditions for actual device operation Remended Operating Conditions Symbol VCC VIH VIL IOH IOL TA Parameter Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Output Current Low Level Output Current Free Air Operating Temperature 0 08 b2 6 Min 4 75 Nom 5 Max 5 25 Units V V V m A m A C 24 70 Electrical...