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| TECHNICAL DATA IN74HC14A Hex Schmitt-Trigger Inverter High-Performance Silicon-Gate CMOS The IN74HC14A is identical in pinout to the LS/ALS14, LS/ALS04. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. The IN74HC14A is useful to "square up" slow input rise and fall times. Due to the hysteresis voltage of the Schmitt trigger, the IN74HC14A finds applications in noisy environments. * * * * Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 A High Noise Immunity Characteristic of CMOS Devices ORDERING INFORMATION IN74HC14AN Plastic IN74HC14AD SOIC TA = -55 to 125 C for all packages LOGIC DIAGRAM PIN ASSIGNMENT FUNCTION TABLE Inputs A L H PIN 14 =VCC PIN 7 = GND Output Y H L 55 IN74HC14A MAXIMUM RATINGS* Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL * Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Current, per Pin DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) Value -0.5 to +7.0 -1.5 to VCC +1.5 -0.5 to VCC +0.5 20 25 50 750 500 -65 to +150 260 Unit V V V mA mA mA mW C C Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. +Derating - Plastic DIP: - 10 mW/C from 65 to 125C SOIC Package: : - 7 mW/C from 65 to 125C RECOMMENDED OPERATING CONDITIONS Symbol VCC VIN, VOUT TA tr , tf Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Operating Temperature, All Package Types Input Rise and Fall Time (Figure 1) Min 2.0 0 -55 Max 6.0 VCC +125 No Limit* Unit V V C ns * When VIN 50% VCC , ICC > 1mA This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND(VIN or VOUT)VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open. 56 IN74HC14A DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) VCC Symbol Parameter Test Conditions V Guaranteed Limit 25 C to -55C 1.5 3.15 4.2 1.0 2.3 3.0 0.9 2.0 2.6 0.3 0.9 1.2 1.2 2.25 3.0 0.2 0.4 0.5 1.9 4.4 5.9 3.98 5.48 0.1 0.1 0.1 0.26 0.26 0.1 1.0 85 C 1.5 3.15 4.2 0.95 2.25 2.95 0.95 2.05 2.65 0.3 0.9 1.2 1.2 2.25 3.0 0.2 0.4 0.5 1.9 4.4 5.9 3.84 5.34 0.1 0.1 0.1 0.33 0.33 1.0 10 125 C 1.5 3.15 4.2 0.95 2.25 2.95 0.95 2.05 2.65 0.3 0.9 1.2 1.2 2.25 3.0 0.2 0.4 0.5 1.9 4.4 5.9 3.7 5.2 0.1 0.1 0.1 0.4 0.4 1.0 40 A A V Unit VT+max Maximum PositiveGoing Input Threshold Voltage Minimum PositiveGoing Input Threshold Voltage Maximum NegativeGoing Input Threshold Voltage Minimum NegativeGoing Input Threshold Voltage Maximum Hysteresis Voltage Minimum Hysteresis Voltage Minimum High-Level Output Voltage VOUT=0.1 V IOUT 20 A VOUT=0.1 V IOUT 20 A VOUT=VCC -0.1 V IOUT 20 A VOUT=VCC-0.1 V IOUT 20 A VOUT=0.1 V or VCC-0.1 V IOUT 20 A VOUT=0.1 V or VCC-0.1 V IOUT 20 A VINVT -min IOUT 20 A VINVT -min IOUT4mA IOUT5.2mA 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.5 2.0 4.5 6.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 6.0 6.0 V VT+min V VT-max V VT-min V VHmax Note 1 VHmin Note 1 VOH V V V VOL Maximum Low-Level Output Voltage VINVT +max IOUT 20 A VINVT +max IOUT 4mA IOUT5.2mA IIN ICC Maximum Input Leakage Current Maximum Quiescent Supply Current (per Package) VIN=VCC or GND VIN=VCC or GND IOUT=0A Note: 1 VHmin>(VT+min)-(VT-max); VHmax=(VT+max)-(VT-min) . 57 IN74HC14A AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns) VCC Symbol Parameter V Guaranteed Limit 25 C to -55C 95 19 16 75 15 13 10 85C 125C Unit tPLH, tPHL Maximum Propagation Delay, Input A to Output Y (Figures 1 and 2) Maximum Output Transition Time, Any Output (Figures 1 and 2) Maximum Input Capacitance 2.0 4.5 6.0 2.0 4.5 6.0 - 120 24 20 95 19 16 10 145 29 25 110 22 19 10 ns tTLH, tTHL ns CIN pF Power Dissipation Capacitance (Per Inverter) CPD Used to determine the no-load dynamic power consumption: PD=CPDVCC2f+ICCVCC Typical @25C,VCC=5.0 V 22 pF Figure 1. Switching Waveforms Figure 2. Test Circuit 58 |
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