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| IN74ACT14 HEX SCHMITT-TRIGGER INVERTER High-Speed Silicon-Gate CMOS The IN74ACT14 is identical in pinout to the LS/ALS14, HC/HCT14. The IN74ACT14 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. The IN74ACT14 is useful to "square up" slow input rise and fall times. Due to the hysteresis voltage of the Schmitt trigger, the IN74ACT14 finds applications in noisy environments. * TTL/NMOS Compatible Input Levels Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 4.5 to 5.5 V Low Input Current: 1.0 A; 0.1 A @ 25C Outputs Source/Sink 24 mA * * * * ORDERING INFORMATION IN74ACT14N Plastic IN74ACT14D 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 1 IN74ACT14 MAXIMUM RATINGS* Symbol Parameter Value Unit VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V VIN DC Input Voltage (Referenced to GND) -0.5 to VCC +0.5 V VOUT DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V IIN DC Input Current, per Pin mA 20 IOUT DC Output Sink/Source Current, per Pin mA 50 ICC DC Supply Current, VCC and GND Pins mA 50 PD Power Dissipation in Still Air, Plastic DIP+ 750 mW SOIC Package+ 500 Tstg Storage Temperature -65 to +150 C 260 TL Lead Temperature, 1 mm from Case for 10 C 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 125C SOIC Package: : - 7 mW/C from 65 to 125C RECOMMENDED OPERATING CONDITIONS Symbol Parameter VCC DC Supply Voltage (Referenced to GND) VIN, VOUT 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 t r, tf Input Rise and Fall Time * VCC =4.5 V VCC =5.5 V (except Schmitt Inputs) * VIN from 0.8 V to 2.0 V Min 4.5 0 Max 5.5 VCC 140 +85 -24 24 10 8.0 Unit V V C C mA mA ns/V -40 0 0 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. 2 IN74ACT14 DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) VCC Symbol VOH Parameter Minimum Level Voltage Test Conditions V 4.5 5.5 min mA mA 4.5 5.5 4.5 5.5 Guaranteed Limits 25 C -40C to 85C 4.4 4.4 5.4 5.4 3.86 4.86 0.1 0.1 3.76 4.76 0.1 0.1 0.44 0.44 2.0 2.0 0.8 0.8 1.2 1.2 0.4 0.4 1.0 1.5 75 -75 40 V V V V A mA mA mA A V Unit V High- IOUT -50 A Output VIN VT IOH=-12 IOH=-24 IOH=-24 mA Low- IOUT 50 A Output * * VOL Maximum Level Voltage VIN= VT +max 0.36 IOL=12 mA 4.5 0.36 IOL=24 mA 5.5 IOL=24 mA VT +max Maximum Positive- VOUT =0.1 V 4.5 Going Input TA = Worst Case 5.5 Threshold Voltage VT - min Minimum Negative- VOUT = VCC - 0.1 V 4.5 Going Input TA = Worst Case 5.5 Threshold Voltage VH max Maximum VOUT =0.1 V or VCC - 0.1 4.5 5.5 Hysteresis Voltage V TA = Worst Case VH min Minimum VOUT =0.1 V or VCC - 0.1 4.5 5.5 Hysteresis Voltage V TA = Worst Case IIN Maximum Input VIN=VCC or GND 5.5 0.1 Leakage Current Addition Quiescent VIN=VCC -2.1 V 5.5 ICC Supply Current VOLD=1.65 V Max IOLD +Minimum 5.5 Dynamic Output Current VOHD=3.85 V Min IOHD +Minimum 5.5 Dynamic Output Current VIN=VCC or GND ICC Maximum 5.5 4.0 Quiescent Supply Current (per Package) * All outputs loaded; thresholds on input associated with output under test. +Maximum test duration 2.0 ms, one output loaded at a time. Note: VH=(VT+)-(VT-) . 3 IN74ACT14 AC ELECTRICAL CHARACTERISTICS(VCC=5.0 V 10%, CL=50pF,Input tr=tf=3.0 ns) Guaranteed Limits Unit Symbol Parameter 25 C -40C to 85C Min Max Min Max tPLH Propagation Delay, Input A to Output Y 1.5 11.5 1.0 12.5 ns (Figure 1) tPHL Propagation Delay, Input A to Output Y 1.5 10.0 1.0 11.0 ns (Figure 1) CIN Maximum Input Capacitance 4.5 4.5 pF Typical @25C,VCC=5.0 V 25 CPD Power Dissipation Capacitance pF Figure 1. Switching Waveforms 4 |
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