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| TECHNICAL DATA IN74HC374A Octal 3-State Noninverting D Flip-Flop High-Performance Silicon-Gate CMOS The IN74HC374A is identical in pinout to the LS/ALS374. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. Data meeting the setup and hold time is clocked to the outputs with the rising edge of the Clock. The Output Enable input does not affect the states of the flip-flops, but when Output Enable is high, the outputs are forced to the high-impedance state; thus, data may be stored even when the outputs are not enabled. * 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 IN74HC374AN Plastic IN74HC374ADW SOIC TA = -55 to 125 C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE PIN 20=VCC PIN 10 = GND Inputs Output Enable L L L H L,H, X Clock D H L X X Output Q H L no change Z X = don't care Z = high impedance 376 IN74HC374A 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 35 75 750 500 -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) VCC =2.0 V VCC =4.5 V VCC =6.0 V Min 2.0 0 -55 0 0 0 Max 6.0 VCC +125 1000 500 400 Unit V V C ns 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. 377 IN74HC374A 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 0.5 1.35 1.8 1.9 4.4 5.9 3.98 5.48 0.1 0.1 0.1 0.26 0.26 0.1 0.5 85 C 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 3.84 5.34 0.1 0.1 0.1 0.33 0.33 1.0 5.0 125 C 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 3.7 5.2 0.1 0.1 0.1 0.4 0.4 1.0 10 A A V Unit VIH Minimum High-Level Input Voltage Maximum Low Level Input Voltage Minimum High-Level Output Voltage VOUT=0.1 V or VCC-0.1 V IOUT 20 A VOUT=0.1 V or VCC-0.1 V IOUT 20 A VIN=VIH or VIL IOUT 20 A VIN=VIH or VIL IOUT 6.0 mA IOUT 7.8 mA 2.0 4.5 6.0 2.0 4.5 6.0 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 VIL V VOH V VOL Maximum Low-Level Output Voltage VIN= VIL or VIH IOUT 20 A VIN= VIL or VIH IOUT 6.0 mA IOUT 7.8 mA IIN IOZ Maximum Input Leakage Current Maximum Three State Leakage Current Maximum Quiescent Supply Current (per Package) VIN=VCC or GND Output in High-Impedance State VIN =VIH or VIL VOUT= VCC or GND VIN=VCC or GND IOUT=0A ICC 6.0 4.0 40 160 A 378 IN74HC374A AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns) VCC Symbol Parameter V Guaranteed Limit 25 C to -55C 6.0 30 35 125 25 21 150 30 26 150 30 26 75 15 13 10 15 85C 125C Unit fmax Maximum Clock Frequency (50% Duty Cycle) (Figures 1 and 4) Maximum Propagation Delay, Clock to Q (Figures 1 and 4) Maximum Propagation Delay, Output Enable to Q (Figures 2 and 5) Maximum Propagation Delay, Output Enable to Q (Figures 2 and 5) Maximum Output Transition Time, Any Output (Figures 1 and 4) Maximum Input Capacitance Maximum Three-State Output Capacitance (Output in High-Impedance State) Power Dissipation Capacitance (Per Enabled Output) 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 - 5.0 24 28 155 31 26 190 38 33 190 38 33 95 19 16 10 15 4.0 20 24 190 38 32 225 45 38 225 45 38 110 22 19 10 15 MHz tPLH, tPHL ns tPLZ, tPHZ ns tPZH, tPZL ns tTLH, tTHL ns CIN COUT pF pF Typical @25C,VCC=5.0 V 34 pF CPD Used to determine the no-load dynamic power consumption: PD=CPDVCC2f+ICCVCC TIMING REQUIREMENTS (CL=50pF,Input tr=tf=6.0 ns) VCC Symbol tSU Parameter Minimum Setup Time, Data to Clock (Figure 3) Minimum Hold Time, Clock to Data (Figure 3) Minimum Pulse Width, Clock (Figure 1) Maximum Input Rise and Fall Times (Figure 1) V 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 25 C to -55C 50 10 9 5 5 5 60 12 10 1000 500 400 Guaranteed Limit 85C 65 13 11 5 5 5 75 15 13 1000 500 400 125C 75 15 13 5 5 5 90 18 15 1000 500 400 Unit ns th ns tw ns tr, tf ns 379 IN74HC374A Figure 1. Switching Waveforms Figure 2. Switching Waveforms Figure 3. Switching Waveforms Figure 4. Test Circuit Figure 5. Test Circuit EXPANDED LOGIC DIAGRAM 380 |
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