DATA SHEETProduct specificationFile under Integrated Circuits, IC06September 1993INTEGRATED CIRCUITS74HC/HCT132Quad 2-input NAND Schmitt triggerFor a complete data sheet, please also download:•The IC06 74HC/HCT/HCU/HCMOS Logic Family Specifications •The IC06 74HC/HCT/HCU/HCMOS Logic Package Information •The IC06 74HC/HCT/HCU/HCMOS Logic Package Outlines查询74HC132供应商FEATURES•Output capability: standard •I CC category: SSI GENERAL DESCRIPTIONThe 74HC/HCT132 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL).They are specified in compliance with JEDEC standard no. 7A.The 74HC/HCT132 contain four 2-input NAND gates which accept standard input signals. They are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals.The gate switches at different points for positive and negative-going signals. The difference between the positive voltage V T + and the negative voltage V T − is defined as the hysteresis voltage V H .QUICK REFERENCE DATAGND =0 V; T amb =25°C; t r =t f =6 ns Notes1.C PD is used to determine the dynamic power dissipation (P D in µW):P D =C PD ×V CC 2×f i +∑(C L ×V CC 2×f o ) where:f i =input frequency in MHz f o =output frequency in MHz ∑(C L ×V CC 2×f o )=sum of outputs C L =output load capacitance in pF V CC =supply voltage in V2.For HC the condition is V I =GND to V CCFor HCT the condition is V I =GND to V CC −1.5 V ORDERING INFORMATIONSee “74HC/HCT/HCU/HCMOS Logic Package Information”.SYMBOL PARAMETERCONDITIONSTYPICAL UNITHCHCTt PHL / t PLH propagation delay nA, nB to nY C L =15 pF; V CC =5V 1117ns C I input capacitance3.5 3.5pF C PD power dissipation capacitance per gatenotes 1 and 22420pFPIN DESCRIPTIONPIN NO.SYMBOL NAME AND FUNCTION1, 4, 9, 121A to 4A data inputs2, 5, 10, 131B to 4B data inputs3, 6, 8, 111Y to 4Y data outputs7GND ground (0 V)14V CC positive supply voltageFig.1 Pin configuration.Fig.2 Logic symbol.Fig.3 IEC logic symbol.Fig.4 Functional diagram.Fig.5Logic diagram(one Schmitt trigger).FUNCTION TABLENotes1.H=HIGH voltage levelL=LOW voltage levelAPPLICATIONS•Wave and pulse shapers•Astable multivibrators•Monostable multivibratorsINPUTS OUTPUTnA nB nYL L HL H HH L HH H LDC CHARACTERISTICS FOR 74HCFor the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Transfer characteristics are given below.Output capability: standard I CC category: SSITransfer characteristics for 74HCVoltages are referenced to GND (ground =0 V)AC CHARACTERISTICS FOR 74HC GND =0 V; t r =t f =6 ns; C L =50 pFSYMBOL PARAMETERT amb (°C)UNIT TEST CONDITIONS74HCV CC (V)WAVEFORMS +25−40to +85−40to +125min.typ.max.min.max.min.max.V T +positive-going threshold0.7 1.18 1.50.7 1.50.7 1.5V2.0Figs 6 and 71.7 2.383.15 1.7 3.15 1.7 3.154.52.13.144.2 2.1 4.2 2.1 4.2 6.0V T −negative-going threshold 0.30.63 1.00.3 1.00.3 1.0V 2.0Figs 6 and 70.9 1.67 2.20.9 2.20.9 2.2 4.51.22.263.0 1.2 3.0 1.2 3.0 6.0V Hhysteresis (V T +−V T −)0.20.55 1.00.2 1.00.2 1.0V 2.0Figs 6 and 70.40.71 1.40.4 1.40.4 1.4 4.50.60.881.60.61.60.61.66.0SYMBOL PARAMETERT amb (°C)UNITTEST CONDITIONS 74HCV CC (V)WAVEFORMS+25−40 TO +85−40 TO +125min.typ.max.min.max.min.max.t PHL / t PLHpropagation delay nA, nB to nY 36125155190ns2.0Fig.1313253138 4.510212632 6.0t THL / t TLHoutput transition time197595110ns 2.0Fig.137151922 4.561316196.0DC CHARACTERISTICS FOR 74HCTFor the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”. Transfer characteristics are given below.Output capability: standard I CC category: SSI Notes to HCT typesThe value of additional quiescent supply current (∆I CC ) for a unit load of 1 is given in the family specifications.To determine ∆I CC per input, multiply this value by the unit load coefficient shown in the table below.Transfer characteristics for 74HCTVoltages are referenced to GND (ground =0 V)AC CHARACTERISTICS FOR 74HCT GND =0 V; t r =t f =6 ns; C L =50 pFINPUT UNIT LOAD COEFFICIENT nA, nB0.3SYMBOL PARAMETERT amb (°C)UNIT TEST CONDITIONS74HCTV CC (V)WAVEFORMS +25−40to +85−40to +125min.typ.max.min.max.min.max.V T +positive-going threshold1.2 1.41 1.9 1.2 1.9 1.2 1.9V4.5Figs 6 and 71.41.592.1 1.4 2.1 1.4 2.1 5.5V T −negative-going threshold 0.50.85 1.20.5 1.20.5 1.2V 4.5Figs 6 and 70.60.99 1.40.6 1.40.6 1.4 5.5V Hhysteresis (V T +−V T −)0.40.56−0.4−0.4−V 4.5Figs 6 and 70.40.60−0.4−0.4−5.5SYMBOL PARAMETERT amb (°C)UNITTEST CONDITIONS 74HCTV CC (V)WAVEFORMS+25−40to +85−40to +125min.typ.max.min.max.min.max.t PHL / t PLH propagation delay nA, nB to nY 20334150ns 4.5Fig.13t THL / t TLHoutput transition time7151922ns4.5Fig.13TRANSFER CHARACTERISTIC WAVEFORMSFig.6 Transfer characteristic.Fig.7Waveforms showing the definition of V T+, V T− and V H; where V T+ and V T− are betweenlimits of 20% and 70%.Fig.8Typical HC transfer characteristics;V CC=2 V.Fig.9Typical HC transfer characteristics;V CC=4.5 V.Fig.10Typical HC transfer characteristics;V CC=6 V.Fig.11Typical HCT transfer characteristics;V CC=4.5 V.Fig.12 Typical HCT transfer characteristics; V CC=5.5 V.AC WAVEFORMS(1)HC : V M=50%; V I=GND to V CC.HCT: V M=1.3 V; V I=GND to 3 V.Fig.13Waveforms showing the input (nA, nB) to output (nY) propagation delays and the output transition times.Application informationThe slow input rise and fall times cause additional power dissipation, this can be calculated using the following formula:P ad =f i ×(t r ×I CCa +t f × I CCa )×V CC .Where:Average I CCa differs with positive or negative input transitions, as shown in Figs 14 and 15.P ad f i t r t f I CCa=additional power dissipation (µW)=input frequency (MHz)=input rise time (ns); 10%−90%=input fall time (ns); 10%−90%=average additional supply current (µA)Fig.14Average I CC for HC Schmitt trigger devices;linear change of V i between 0.1 V CC to 0.9 V CC .Fig.15Average I CC for HCT Schmitt triggerdevices; linear change of V i between 0.1 V CC to 0.9 V CC .HC/HCT132 used in a relaxation oscillator circuit, see Fig.16.Note to Application informationAll values given are typical unless otherwise specified.PACKAGE OUTLINESSee “74HC/HCT/HCU/HCMOS Logic Package Outlines”.Fig.16 Relaxation oscillator using HC/HCT132.HC:HCT:f 1T ---10.8RC -----------------≈=f 1T ---10.67RC---------------------≈=。