TECHNICAL DATA IW4028B BCD-to-Decimal Decoder High-Voltage Silicon-Gate CMOS The IW4028B types are BCD-to-decimal or binary-to-octal decoders consisting of buffering on all 4 inputs, decoding-logic gates, and 10 output buffers. A BCD code applied to the four inputs, A0 to A3 results in a high level at the selected one of 10 decimal decoded outputs. Similarly, a 3-bit binary code applied to inputs A0 through A2 is decoded in octal code at output 0 to7 if A3=“0”. High drive capability is provided at all outputs to enhance dc and dynamic performance in high fan-out applications. • BCD-to-decimal decoding or binary-to-octal decoding • Operating Voltage Range: 3.0 to 18 V • Maximum input current of 1 µA at 18 V over full packagetemperature range; 100 nA at 18 V and 25°C • Noise margin (over full package temperature range): 1.0 V min @ 5.0 V supply 2.0 V min @ 10.0 V supply 2.5 V min @ 15.0 V supply ORDERING INFORMATION IW4028BN Plastic IW4028BD SOIC TA = -55° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM PIN 16=VCC PIN 8= GND 59 IW4028B MAXIMUM RATINGS* Symbol Parameter Value Unit -0.5 to +20 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 VOUT IIN DC Input Current, per Pin ±10 mA PD Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ 750 500 mW PD Power Dissipation per Output Transistor 100 mW -65 to +150 °C 260 °C 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 TA Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Operating Temperature, All Package Types Min Max Unit 3.0 18 V 0 VCC V -55 +125 °C 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. 60 IW4028B DC ELECTRICAL CHARACTERISTICS(Voltages Referenced to GND) VCC Guaranteed Limit V ≥-55°C 25°C ≤125 °C Unit VOUT= 0.5 V or VCC - 0.5V VOUT= 1.0 V or VCC - 1.0 V VOUT= 1.5 V or VCC - 1.5V 5.0 10 15 3.5 7 11 3.5 7 11 3.5 7 11 V VIL Maximum Low -Level VOUT= 0.5 V or VCC - 0.5V Input Voltage VOUT= 1.0 V or VCC - 1.0 V VOUT= 1.5 V or VCC - 1.5V 5.0 10 15 1.5 3 4 1.5 3 4 1.5 3 4 V VOH Minimum High-Level Output Voltage VIN=GND or VCC 5.0 10 15 4.95 9.95 14.95 4.95 9.95 14.95 4.95 9.95 14.95 V VOL Maximum Low-Level Output Voltage VIN=GND or VCC 5.0 10 15 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 V IIN Maximum Input Leakage Current VIN= GND or VCC 18 ±0.1 ±0.1 ±1.0 µA ICC Maximum Quiescent Supply Current (per Package) VIN= GND or VCC 5.0 10 15 20 5 10 20 100 5 10 20 100 150 300 600 3000 µA IOL Minimum Output Low VIN= GND or VCC (Sink) Current UOL=0.4 V UOL=0.5 V UOL=1.5 V 5.0 10 15 0.64 1.6 4.2 0.51 1.3 3.4 0.36 0.9 2.4 Minimum Output VIN= GND or VCC High (Source) Current UOH=2.5 V UOH=4.6 V UOH=9.5 V UOH=13.5 V 5.0 5.0 10 15 -2 -0.64 -1.6 -4.2 -1.6 -0.51 -1.3 -3.4 -1.15 -0.36 -0.9 -2.4 Symbol Parameter VIH Minimum High-Level Input Voltage IOH Test Conditions mA mA 61 IW4028B AC ELECTRICAL CHARACTERISTICS(CL=50pF, RL=200kΩ, Input tr=tf=20 ns) Guaranteed Limit VCC Symbol Parameter V ≥-55°C 25°C ≤125°C Unit tPHL, tPLH Maximum Propagation Delay, Input A to Output Y (Figure 1) 5.0 10 15 350 160 120 350 160 120 700 320 240 ns tTHL, tTLH Maximum Output Transition Time, Any Output (Figure 1) 5.0 10 15 200 100 80 200 100 80 400 200 160 ns CIN Maximum Input Capacitance - 7.5 pF FUNCTION TABLE Inputs 62 Outputs A3 A2 A1 A0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 L L L L H L L L L L L L L L L L L H L H L L L L L L L L L L H L L L H L L L L L L L L L H H L L L H L L L L L L L H L L L L L L H L L L L L L H L H L L L L L H L L L L L H H L L L L L L L H L L L L H H H L L L L L L L H L L H L L L L L L L L L L L H L H L L H L L L L L L L L L H H L H L L L L L L L L L L L H L H H L L L L L L L L L L H H L L L L L L L L L L L L H H L H L L L L L L L L L L H H H L L L L L L L L L L L H H H H L L L L L L L L L L IW4028B Figure 1. Switching Waveforms EXPANDED LOGIC DIAGRAM 63