Binary Counter...enable pins?

Discussion in 'The Projects Forum' started by Babae, Mar 19, 2014.

  1. Babae

    Thread Starter New Member

    Feb 4, 2014
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    0
    I am currently working on a project that involves the use of binary counters. This is my first time using them so I am a little bit confused about certain enable pins on a binary counter.

    The IC I am using is the 74F269 from NXP.
    http://www.nxp.com/documents/data_sheet/74F269.pdf

    I am just wondering what do the CET, CEP and PE pins do. I could not find any useful information on the datasheet or google.
     
  2. crutschow

    Expert

    Mar 14, 2008
    13,005
    3,232
    CET and CEP are used for cascading the counters as shown in Figure 4 in the data sheet. PE is to parallel load (jam) the counter with a desired count value (the Px inputs), for example if you wanted to count down from a known input (programmable count).

    A short description of the pin functions is shown in Table 2 (did you miss that?).
     
  3. Alec_t

    AAC Fanatic!

    Sep 17, 2013
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