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| TECHNICAL DATA KK74ACT138 1-of-8 Decoder/Demultiplexer High-Speed Silicon-Gate CMOS The KK74ACT138 is identical in pinout to the LS/ALS138, HC/HCT138. The KK74ACT138 may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. The KK74ACT138 decodes a three-bit Address to one-of-eight activelot outputs. This device features three Chip Select inputs, two active-low and one active-high to facilitate the demultiplexing, cascading, and chipselecting functions. The demultiplexing function is accomplished by using the Address inputs to select the desired device output; one of the Chip Selects is used as a data input while the other Chip Selects are held in their active states. * 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 KK74ACT138N Plastic KK74ACT138D SOIC TA = -40 to 85 C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs CS1 CS2 CS3 XXH XHX LXX H H H H PIN 16 =VCC PIN 8 = GND H H H H L L L L L L L L L L L L L L L L A2 A1 A0 XXX XXX XXX L L L L H H H H L L H H L L H H L H L H L H L H Outputs Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 H H H HHHHH H H H HHHHH H H H HHHHH L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H H H H H H H H L H = high level (steady state) L = low level (steady state) X = don't care 1 KK74ACT138 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 Sink/Source 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 -0.5 to VCC +0.5 -0.5 to VCC +0.5 20 50 50 750 500 -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 TJ TA IOH IOL tr, tf * Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Junction Temperature (PDIP) Operating Temperature, All Package Types Output Current - High Output Current - Low Input Rise and Fall Time (except Schmitt Inputs) * Min 4.5 0 -40 Max 5.5 VCC 140 +85 -24 24 Unit V V C C mA mA ns/V VCC =4.5 V VCC =5.5 V 0 0 10 8.0 VIN from 0.8 V to 2.0 V 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 KK74ACT138 DC ELECTRICAL CHARACTERISTICS (Voltages Referenced to GND) VCC Symbol VIH VIL VOH Parameter Minimum HighLevel Input Voltage Maximum Low Level Input Voltage Minimum HighLevel Output Voltage Test Conditions VOUT=0.1 V or VCC-0.1 V VOUT=0.1 V or VCC-0.1 V IOUT -50 A VIN=VIH or VIL IOH=-24 mA IOH=-24 mA VOL Maximum LowLevel Output Voltage IOUT 50 A * * Guaranteed Limits 25 C 2.0 2.0 0.8 0.8 4.4 5.4 3.86 4.86 0.1 0.1 0.36 0.36 0.1 -40C to 85C 2.0 2.0 0.8 0.8 4.4 5.4 3.76 4.76 0.1 0.1 0.44 0.44 1.0 1.5 75 -75 8.0 80 A mA mA mA A V Unit V V V V 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 5.5 5.5 5.5 5.5 5.5 VIN= VIH or VIL IOL=24 mA IOL=24 mA VIN=VCC or GND VIN=VCC - 2.1 V VOLD=1.65 V Max VOHD=3.85 V Min VIN=VCC or GND IIN ICCT IOLD IOHD ICC Maximum Input Leakage Current Additional Max. ICC/Input +Minimum Dynamic Output Current +Minimum Dynamic Output Current Maximum 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. 3 KK74ACT138 AC ELECTRICAL CHARACTERISTICS (VCC=5.0 V 10%, CL=50pF,Input tr=tf=3.0 ns) Guaranteed Limits Symbol tPLH tPHL tPLH tPHL tPLH tPHL CIN Parameter Propagation Delay, Input A to Output Y (Figure 1) Propagation Delay, Input A to Output Y (Figure 1) Propagation Delay, CS2 or CS3 to Output Y (Figure 3) Propagation Delay, CS2 or CS3 to Output Y (Figure 3) Propagation Delay, CS1 to Output Y (Figure 2) Propagation Delay, CS1 to Output Y (Figure 2) Maximum Input Capacitance 25 C Min 1.5 1.5 2.5 2.0 2.5 2.0 4.5 Max 10.5 10.5 11.5 11.5 12.0 10.5 -40C to 85C Min 1.5 1.5 2.0 2.0 2.0 1.5 4.5 Max 11.5 11.5 12.5 12.5 13.0 11.5 ns ns ns ns ns ns pF Unit Typical @25C,VCC=5.0 V CPD Power Dissipation Capacitance 60 pF Figure 1. Switching Waveforms Figure 2. Switching Waveforms Figure 3. Switching Waveforms 4 KK74ACT138 EXPANDED LOGIC DIAGRAM 5 KK74ACT138 N SUFFIX PLASTIC DIP (MS - 001BB) A Dimension, mm 16 9 B Symbol A MIN 18.67 6.1 MAX 19.69 7.11 5.33 1 8 B C F L D F 0.36 1.14 2.54 7.62 0 2.92 7.62 0.2 0.38 0.56 1.78 C -T- SEATING PLANE G H H J N G D 0.25 (0.010) M T K M J K L M N 10 3.81 8.26 0.36 NOTES: 1. Dimensions "A", "B" do not include mold flash or protrusions. Maximum mold flash or protrusions 0.25 mm (0.010) per side. D SUFFIX SOIC (MS - 012AC) Dimension, mm A 16 9 Symbol A MIN 9.8 3.8 1.35 0.33 0.4 1.27 5.72 0 0.1 0.19 5.8 0.25 MAX 10 4 1.75 0.51 1.27 H B P B C 1 G 8 C R x 45 D F G -TD 0.25 (0.010) M T C M K SEATING PLANE J F M H J K M P R 8 0.25 0.25 6.2 0.5 NOTES: 1. Dimensions A and B do not include mold flash or protrusion. 2. Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B 0.25 mm (0.010) per side. 6 |
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