7400 ttl series logic texas instruments sn7407n hex buffer driver ic ttl family 7407 base number 475 to 525v supply voltage 20ns propagation delay 14 dip 0 to 70c convert ttl voltage levels to mos levels high sink current capability input clamping diodes simplify system design open collector drivers for indicator lamps and relays inputs fully compatible with most ttl circuits texas instruments sn7407n 7407 hex buffer driver 5v dip14