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 µA; 0.1 µA @ 25°C • 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 Output A Y L H H L PIN 14 =VCC PIN 7 = GND 51 IN74AC14 MAXIMUM RATINGS* Symbol Parameter Value Unit -0.5 to +7.0 V VCC DC Supply Voltage (Referenced to GND) VIN DC Input Voltage (Referenced to GND) -0.5 to VCC +0.5 V DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V DC Input Current, per Pin ±20 mA IOUT DC Output Sink/Source Current, per Pin ±50 mA ICC DC Supply Current, VCC and GND Pins ±50 mA PD Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ 750 500 mW -65 to +150 °C 260 °C VOUT IIN Tstg TL Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) * 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 125°C SOIC Package: : - 7 mW/°C from 65° to 125°C RECOMMENDED OPERATING CONDITIONS Symbol VCC VIN, VOUT DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) TJ Junction Temperature (PDIP) TA Operating Temperature, All Package Types IOH Output Current - High IOL Output Current - Low tr, tf * Parameter Input Rise and Fall Time (except Schmitt Inputs) * Min Max Unit 2.0 6.0 V 0 VCC V 140 °C +85 °C -24 mA 24 mA 150 40 25 ns/V -40 VCC =3.0 V VCC =4.5 V VCC =5.5 V 0 0 0 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 µA VIN ≤ VT - min IOH=-12 mA IOH=-24 mA IOH=-24 mA Guaranteed Limits V 25 °C -40°C to 85°C Unit 3.0 4.5 5.5 2.9 4.4 5.4 2.9 4.4 5.4 V 3.0 4.5 5.5 2.56 3.86 4.86 2.46 3.76 4.76 3.0 4.5 5.5 0.1 0.1 0.1 0.1 0.1 0.1 3.0 4.5 5.5 0.36 0.36 0.36 0.44 0.44 0.44 * VOL Maximum Low-Level Output Voltage IOUT ≤ 50 µA V * VIN=≥ VT +max IOL=12 mA IOL=24 mA IOL=24 mA VT +max Maximum PositiveGoing Input Threshold Voltage VOUT =0.1 V TA = Worst Case 3.0 4.5 5.5 2.2 3.2 3.9 V VT - min Minimum NegativeGoing Input Threshold Voltage VOUT = VCC - 0.1 V TA = Worst Case 3.0 4.5 5.5 0.5 0.9 1.1 V VH max Maximum Hysteresis Voltage VOUT =0.1 V or VCC - 0.1 V TA = Worst Case 3.0 4.5 5.5 1.2 1.4 1.6 V VH min Minimum Hysteresis Voltage VOUT =0.1 V or VCC - 0.1 V TA = Worst Case 3.0 4.5 5.5 0.3 0.4 0.5 V Maximum Input Leakage Current VIN=VCC or GND 5.5 IOLD +Minimum Dynamic Output Current VOLD=1.65 V Max IOHD +Minimum Dynamic Output Current ICC Maximum Quiescent Supply Current (per Package) IIN ±0.1 ±1.0 µA 5.5 75 mA VOHD=3.85 V Min 5.5 -75 mA VIN=VCC or GND 5.5 40 µA 4.0 * 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 Guaranteed Limits 25 °C V -40°C to 85°C Min Max Min Max Unit tPLH Propagation Delay, Input A to Output Y (Figure 1) 3.3 5.0 1.5 1.5 13.5 10.0 1.5 1.5 15.0 11.0 ns tPHL Propagation Delay, Input A to Output Y (Figure 1) 3.3 5.0 1.5 1.5 11.5 8.5 1.5 1.5 13.0 9.5 ns CIN Maximum Input Capacitance 5.0 4.5 4.5 pF Typical @25°C,VCC=5.0 V CPD Power Dissipation Capacitance 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 25 pF