 SU.HARDW.OTHER (2:5020/299)  SU.HARDW.OTHER 
 From : Arnis Langmanis                     2:5100/14.17    Fri 21 Oct 94 19:41 
 Subj : . 74HC595 need!                                                  


8 - bit Shift register with output latch

1 = q1
2 = q2
3 = q3
4 = q4
5 = q5
6 = q6
7 = q7
8 = gnd
9 = qs
10 = -srclr
11 = sclk
12 = rclk
13 = -eno
14 = ds
15 = q0
16 = vcc

----------------------------------------------------------------------
-srclr  -eno    ds    sclk   rclk    | function
----------------------------------------------------------------------
 L       x      x       x     x      | clear shift register
 H       x      L      0/1    x      | shift right (q0=L)
 H       x      H      0/1    x      | shift right (q0=H)
 H       x      x       x     x      | shift register not changed
 H       x      x       x    0/1     | shift register to output register
 H       x      x      1/0    x      | output register not changed
 H       L      x       L     L      | output enabled
 x       H      x       x     H      | all q=Z
------------------------------------------------------------------------

--- GoldED 2.42.A0701+
 * Origin: HoHo * Riga, Latvia (FidoNet.Org 2:5100/14.17)

