 SU.HARDW.HSMODEM (2:5020/299)  SU.HARDW.HSMODEM 
 From : Kesha Pan                           2:5020/68.11    Mon 27 Feb 95 00:32 
 Subj : Re: ZyXEL                                                               


   74HCXXX,   , p . y樮쭮 ᮮ⢥y,
74(Y)XXX, .. (Y). H  ⮩ p  -, 騥
y樠묨   40XXX.  ppy  74HC40XXX.

 > 74HC4052  Dual 4-channel analog multiplexer/demultiplexer

                16 +Vcc           _
             Ŀ            E        - enable input (active LOW)
              _                 1Z, 2Z   - common inputs/outputs
           6o E  1Y012         1Yn, 2Yn - independent iputs/outputs
          10ĴS0  1Y114         S0, S1   - select inputs
           9ĴS1  1Y215
                 1Y311
          13Ĵ1Z  2Y01           -  15611.
                 2Y15            ᠭ 74HC4053.
           3Ĵ2Z  2Y22          ᥣ 11 p.
                 2Y34
             
              8   7 -Vee
              

 > 74HC4053    Triple 2-channel analog multiplexer/demultiplexer

                16 +Vcc           _
             Ŀ            E             - enable input (active LOW)
              _                 1Z, 2Z, 3Z    - common inputs/outputs
           6o E  1Y012         1Yn, 2Yn, 3Yn - independent iputs/outputs
          11ĴS0  1Y113         S0, S1, S2    - select inputs
          10ĴS1     
           9ĴS2  2Y32
                 2Y01           -  ⥭.
          14Ĵ1Z                   ᠭ 74HC4053.
          15Ĵ2Z  3Y25          ᥣ 13 p.
           4Ĵ3Z  3Y33
             
              8   7 -Vee
              


