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What are the TTL input/output levels for the PNA rear panel material handler connection?

  • TTL output: high = 2.5 V minimum, 5.0 V maximum; low= 0.55 V maximum
  • TTL input: high = 2.0 V minimum, 5.0 V maximum; low = 0.80 V maximum, -0.5 V min

At the time of this publication the noted TTL values were based on the #74ABT16244 CMOSS chip set.