TECHNICAL DATA IN74HC151 8-Input Data Selector/Multiplexer High-Performance Silicon-Gate CMOS The IN74HC151 is identical in pinout to the LS/ALS151. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. The device selects one of the eight binary Data Inputs, as determined by the Address Inputs. The Strobe pin must be at a low level for the selected data to appear at the outputs. If Strobe is high, the Y output is forced to a low level and the Y output is forced to a high level. * 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 IN74HC151N Plastic IN74HC151D SOIC TA = -55 to 125 C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs PIN 16 =VCC PIN 8 = GND Outputs A2 A1 A0 Strobe Y Y X X X H L H L L L L D0 D0 L L H L D1 D1 L H L L D2 D2 L H H L D3 D3 H L L L D4 D4 H L H L D5 D5 H H L L D6 D6 H H H L D7 D7 D0,D1...D7=the level of the respective D input X = don't care 161 IN74HC151 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) -1.5 to VCC +1.5 V DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V DC Input Current, per Pin 20 mA IOUT DC Output Current, per Pin 25 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 125C SOIC Package: : - 7 mW/C from 65 to 125C RECOMMENDED OPERATING CONDITIONS Symbol VCC VIN, VOUT Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) TA Operating Temperature, All Package Types tr, tf Input Rise and Fall Time (Figure 1) VCC =2.0 V VCC =4.5 V VCC =6.0 V Min Max Unit 2.0 6.0 V 0 VCC V -55 +125 C 0 0 0 1000 500 400 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. 162 IN74HC151 DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) VCC V 25 C to -55C 85 C 125 C Unit VOUT=0.1 V or VCC-0.1 V IOUT 20 A 2.0 4.5 6.0 1.5 3.15 4.2 1.5 3.15 4.2 1.5 3.15 4.2 V Maximum Low Level Input Voltage VOUT=0.1 V or VCC-0.1 V IOUT 20 A 2.0 4.5 6.0 0.3 0.9 1.2 0.3 0.9 1.2 0.3 0.9 1.2 V Minimum High-Level Output Voltage VIN=VIH or VIL IOUT 20 A 2.0 4.5 6.0 1.9 4.4 5.9 1.9 4.4 5.9 1.9 4.4 5.9 V VIN=VIH or VIL IOUT 4.0 mA IOUT 5.2 mA 4.5 6.0 3.98 5.48 3.84 5.34 3.7 5.2 VIN=VIH or VIL IOUT 20 A 2.0 4.5 6.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 VIN=VIH or VIL IOUT 4.0 mA IOUT 5.2 mA 4.5 6.0 0.26 0.26 0.33 0.33 0.4 0.4 Symbol Parameter VIH Minimum High-Level Input Voltage VIL VOH VOL Guaranteed Limit Maximum Low-Level Output Voltage Test Conditions V IIN Maximum Input Leakage Current VIN=VCC or GND 6.0 0.1 1.0 1.0 A ICC Maximum Quiescent Supply Current (per Package) VIN=VCC or GND IOUT=0A 6.0 8.0 80 160 A 163 IN74HC151 AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns) Guaranteed Limit VCC Symbol Parameter V 25 C to -55C 85C 125C Unit tPLH, tPHL Maximum Propagation Delay, Input D to Output Y or Y (Figures 1,3 and 6) 2.0 4.5 6.0 185 37 31 230 46 39 280 56 48 ns tPLH, tPHL Maximum Propagation Delay , Input A to Output Y or Y (Figures 2 and 6) 2.0 4.5 6.0 205 41 35 255 51 43 310 62 53 ns tPLH, tPHL Maximum Propagation Delay , Strobe to Output Y or Y (Figures 4,5 and 6) 2.0 4.5 6.0 125 25 21 155 31 26 190 38 32 ns tTLH, tTHL Maximum Output Transition Time, Any Output (Figures 1 and 6) 2.0 4.5 6.0 75 15 13 95 19 16 110 22 19 ns - 10 10 10 pF CIN CPD 164 Maximum Input Capacitance Power Dissipation Capacitance (Per Package) Typical @25C,VCC=5.0 V Used to determine the no-load dynamic power consumption: PD=CPDVCC2f+ICCVCC 36 Figure 1. Switching Waveforms Figure 2. Switching Waveforms Figure 3. Switching Waveforms Figure 4. Switching Waveforms pF IN74HC151 Figure 5. Switching waveforms Figure 6.Test Circuit EXPANDED LOGIC DIAGRAM 165