74LS125N contains four independent gates each of which performs a non-inverting buffer function. 

The outputs have the 3-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 buslines 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. 

Specification

• Propagation Delay Time: 100 ns at 2V / 17 ns at 6V at 25°C
• No. of Gates:4             
• Output Current: 5.2 mA at  6 V 
• No. of Inputs: 1X4
• No. of Pins: 14
• Operating Temperature Range: -40°C to +125°C
• Supply Voltage Range: 2V to 6V
• Package: DIP-14   

For 74HC125 Datasheet Click Here