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| TECHNICAL DATA IN74AC14 Hex Schmitt-Trigger Inverter High-Speed Silicon-Gate CMOS The IN74AC14 is identical in pinout to the LS/ALS14, HC/HCT14. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALS outputs. The IN74AC14 is useful to "square up" slow input rise and fall times. Due to the hysteresis voltage of the Schmitt trigger, the IN74AC14 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; 0.1 A @ 25C * High Noise Immunity Characteristic of CMOS Devices * Outputs Source/Sink 24 mA ORDERING INFORMATION IN74AC14N Plastic IN74AC14D SOIC TA = -40 to 85 C for all packages LOGIC DIAGRAM PIN ASSIGNMENT FUNCTION TABLE Inputs A L H PIN 14 =VCC PIN 7 = GND Output Y H L 51 IN74AC14 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 Sink/Source 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 -0.5 to VCC +0.5 -0.5 to VCC +0.5 20 50 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 TJ TA IOH IOL tr, tf Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Junction Temperature (PDIP) Operating Temperature, All Package Types Output Current - High Output Current - Low Input Rise and Fall Time (except Schmitt Inputs) * Min 2.0 0 -40 Max 6.0 VCC 140 +85 -24 24 Unit V V C C mA mA ns/V VCC =3.0 V VCC =4.5 V VCC =5.5 V 0 0 0 150 40 25 * VIN from 30% to 70% VCC 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. 52 IN74AC14 DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) VCC Symbol VOH Parameter Minimum High-Level Output Voltage Test Conditions IOUT -50 A V 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 3.0 4.5 5.5 5.5 5.5 5.5 5.5 4.0 0.1 Guaranteed Limits 25 C 2.9 4.4 5.4 2.56 3.86 4.86 0.1 0.1 0.1 0.36 0.36 0.36 2.2 3.2 3.9 0.5 0.9 1.1 1.2 1.4 1.6 0.3 0.4 0.5 1.0 75 -75 40 -40C to 85C 2.9 4.4 5.4 2.46 3.76 4.76 0.1 0.1 0.1 0.44 0.44 0.44 V V Unit V VIN VT - min IOH=-12 mA IOH=-24 mA IOH=-24 mA * VOL Maximum Low-Level Output Voltage IOUT 50 A VIN= VT +max IOL=12 mA IOL=24 mA IOL=24 mA VT +max Maximum PositiveGoing Input Threshold Voltage Minimum NegativeGoing Input Threshold Voltage Maximum Hysteresis Voltage Minimum Hysteresis Voltage Maximum Input Leakage Current +Minimum Dynamic Output Current +Minimum Dynamic Output Current Maximum Quiescent Supply Current (per Package) VOUT =0.1 V TA = Worst Case VOUT = VCC - 0.1 V TA = Worst Case VOUT =0.1 V or VCC - 0.1 V TA = Worst Case VOUT =0.1 V or VCC - 0.1 V TA = Worst Case VIN=VCC or GND VOLD=1.65 V Max VOHD=3.85 V Min VIN=VCC or GND * VT - min V VH max V VH min V IIN IOLD IOHD ICC A mA mA A All outputs loaded; thresholds on input associated with output under test. +Maximum test duration 2.0 ms, one output loaded at a time. Notes:1. IIN and ICC @ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V VCC 2. VH=(VT+)-(VT-) . * 53 IN74AC14 AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=3.0 ns) VCC* Symbol Parameter V Guaranteed Limits 25 C Min tPLH tPHL CIN Propagation Delay, Input A to Output Y (Figure 1) Propagation Delay, Input A to Output Y (Figure 1) Maximum Input Capacitance 3.3 5.0 3.3 5.0 5.0 1.5 1.5 1.5 1.5 4.5 Max 13.5 10.0 11.5 8.5 -40C to 85C Min 1.5 1.5 1.5 1.5 4.5 Max 15.0 11.0 13.0 9.5 ns ns pF Unit Typical @25C,VCC=5.0 V CPD * Power Dissipation Capacitance 25 pF Voltage Range 3.3 V is 3.3 V 0.3 V Voltage Range 5.0 V is 5.0 V 0.5 V Figure 1. Switching Waveforms 54 |
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