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| IN74HC158A QUAD 2-INPUT DATA SELECTORS/MULTIPLEXERS High-Performance Silicon-Gate CMOS The IN74HC158A is identical in pinout to the LS/ALS158. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALSTTL outputs. This device routes 2 nibbles (A or B) to a single port (Y) as determined by the Select input. The data is presented at the outputs in invertered form. A high level on the Output Enable input sets all four Y outputs 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 IN74HC158AN Plastic IN74HC158AD SOIC TA = -55 to 125 C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE PIN 16 =VCC PIN 8 = GND Inputs Output Select Enable H X L L L H Outputs Y0-Y3 H A0 - A3 B0 - B3 X=don't care A0-A3,B0-B3=the levels of the respective Data-Word Inputs 1 IN74HC158A 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) -1.5 to VCC +1.5 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 Current, per Pin mA 25 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) TA Operating Temperature, All Package Types t r, tf 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. 2 IN74HC158A DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) Guaranteed Limit VCC Symbol Parameter Test Conditions V 25 C to 85 125 -55C C C 1.5 1.5 VOUT=0.1 V or VCC-0.1 V 2.0 1.5 VIH Minimum High3.15 3.15 3.15 Level Input 4.5 IOUT 20 A 4.2 4.2 4.2 Voltage 6.0 0.5 0.5 VOUT=0.1 V or VCC-0.1 V 2.0 0.5 VIL Maximum Low 1.35 1.35 1.35 Level Input 4.5 IOUT 20 A 1.8 1.8 1.8 Voltage 6.0 1.9 1.9 VIN=VIH or VIL 1.9 VOH Minimum High2.0 4.4 4.4 4.4 Level Output 4.5 IOUT 20 A 5.9 5.9 5.9 Voltage 6.0 VIN=VIH or VIL 3.7 3.84 3.98 4.5 IOUT 4.0 mA 5.2 5.34 5.48 6.0 IOUT 5.2 mA 0.1 0.1 VIN=VIH or VIL 0.1 VOL Maximum Low2.0 0.1 0.1 0.1 Level Output 4.5 IOUT 20 A 0.1 0.1 0.1 Voltage 6.0 VIN=VIH or VIL 0.4 0.33 0.26 4.5 IOUT 4.0 mA 0.4 0.33 0.26 6.0 IOUT 5.2 mA IIN Maximum Input VIN=VCC or GND 6.0 0.1 1.0 1.0 Leakage Current VIN=VCC or GND ICC Maximum 6.0 4.0 40 160 Quiescent Supply IOUT=0A Current (per Package) Unit V V V V A A 3 IN74HC158A AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns) Guaranteed Limit VCC Symbol Parameter V 25 C 85C 125 to C -55C 160 130 105 2.0 tPLH, Maximum Propagation Delay, Input A or 32 26 21 4.5 tPHL B to 27 22 18 6.0 Output Y (Figures 1and 4) 165 140 110 tPLH, Maximum Propagation Delay , Select to 2.0 33 28 22 tPHL Output Y (Figures 2 and 4) 4.5 28 24 19 6.0 150 125 100 tPLH, Maximum Propagation Delay , Output 2.0 30 25 20 tPHL Enable to Output Y (Figures 3 and 4) 4.5 26 21 17 6.0 110 95 75 tTLH, tTHL Maximum Output Transition Time, Any 2.0 22 19 15 Output (Figures 1 and 4) 4.5 19 16 13 6.0 CIN Maximum Input Capacitance 10 10 10 Power Dissipation Capacitance (Per Package) Used to determine the no-load dynamic power consumption: 2 PD=CPDVCC f+ICCVCC Typical @25C,VCC=5.0 V 33 pF Unit ns ns ns ns pF CPD Figure 1. Switching Waveforms Figure 2. Switching Waveforms Figure 3. Switching Waveforms Figure 4. Test Circuit 4 IN74HC158A EXPANDED LOGIC DIAGRAM 5 |
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