Using the DC operating conditions from the following table, give the noise margin LOW (NML) for the 74HC logic family with Vcc=+3.4v. DC Operating Conditions for a Sample of 7400 Series Logic Families DC Operating Condition Logic Family Speed (MHz) Year Vcc VOHmax VOHmin VoLmax VOLmin VIHmax VIHmin VILmax VILmin Ic lomax (H/L) Orig. (TTL) 1964 +5 +5 +2.4 +0.4 GND +5 +2 +0.8 GND 40m -4/+16m 25 LS (TTL) 1976 +5 +5 +2.4 +0.4 GND +5 +2 +0.8 GND 8.8m -4/+8m 40 HC (CMOS) 1982 +2-6 Vcc 0.8 Vcc 0.33 GND Vcc 0.7 Vcc 0.3.Vcc GND 40u +/-25m 50 AC (CMOS) 1985 +2-6 Vcc 0.8 Vcc 0.33 GND Vcc 0.7 Vcc 0.3.Vcc GND 80u +/-50m 125 Note 1: All voltage specifications have units of volts. All current specifications have units of amps. Note 2: The Vo and V, specifications for the AC and HC logic families are worst case and vary depending on the Vcc selection and the output current. Note 3: All specifications are given for the commercial temperature range (74 series). 0.34v 0.4v 0.5v 0.69v
Using the DC operating conditions from the following table, give the noise margin LOW (NML) for the 74HC logic family with Vcc=+3.4v. DC Operating Conditions for a Sample of 7400 Series Logic Families DC Operating Condition Logic Family Speed (MHz) Year Vcc VOHmax VOHmin VoLmax VOLmin VIHmax VIHmin VILmax VILmin Ic lomax (H/L) Orig. (TTL) 1964 +5 +5 +2.4 +0.4 GND +5 +2 +0.8 GND 40m -4/+16m 25 LS (TTL) 1976 +5 +5 +2.4 +0.4 GND +5 +2 +0.8 GND 8.8m -4/+8m 40 HC (CMOS) 1982 +2-6 Vcc 0.8 Vcc 0.33 GND Vcc 0.7 Vcc 0.3.Vcc GND 40u +/-25m 50 AC (CMOS) 1985 +2-6 Vcc 0.8 Vcc 0.33 GND Vcc 0.7 Vcc 0.3.Vcc GND 80u +/-50m 125 Note 1: All voltage specifications have units of volts. All current specifications have units of amps. Note 2: The Vo and V, specifications for the AC and HC logic families are worst case and vary depending on the Vcc selection and the output current. Note 3: All specifications are given for the commercial temperature range (74 series). 0.34v 0.4v 0.5v 0.69v
Chapter22: Sequence Control
Section: Chapter Questions
Problem 6SQ: Draw a symbol for a solid-state logic element AND.
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