TC4428 Application Note

●GENERAL DESCRIPTION

●The TC4426A/4427A/4428A are improved versions of the earlier TC426/427/428 family of buffer/drivers (with which they are pin compatible). They will not latch up under any conditions within their power and voltage ratings. They are not subject to damage when up to 5V of noise spiking (of either polarity) occurs on the ground pin. They can accept, without damage or logic upset, up to 500 mA of reverse current (of either polarity) being forced back into their outputs. All terminals are fully protected against up to 4 kV of electrostatic discharge.

●FEATURES

●■ High Peak Output Current ............................... 1.5A

●■ Wide Operating Range .......................... 4.5V to 18V

●■ High Capacitive Load

●Drive Capability ................. 1000 pF in 25 nsec Typ

●■ Short Delay Time ................................. 30 nsec Typ

●■ Matched Rise, Fall and Delay Times

●■ Low Supply Current

●— With Logic “1” Input ............................ 1 mA Typ

●— With Logic “0” Input ......................... 100 µA Typ

●■ Low Output Impedance ................................ 7ΩTyp

●■ Latch-Up Protected: Will Withstand 0.5A

●Reverse Current

●■ Input Will Withstand Negative Inputs Up to 5V

●■ ESD Protected ....................................................4 kV

●■ Pinout Same as TC426/TC427/TC428