STROBE = RCK, CLOCK = SCK, Output enable = G (but is active HIGH on the 4094 and active LOW on the 595). The behavior of STROBE is subtly different though - on the 595, all output propagation and latching is done on the rising edge of RCK. On the 4094, it seems (I've never used it before, but according to the datasheet) that data is latched on the falling edge, then propagated to the outputs on the rising edge. So you need a full pulse, whereas with the 595 you just need an edge.