TECHNICAL DATA KK74LV138 3-to-8 line decoder/demultiplexer; inverting N SUFFIX PLASTIC The KK74LV138 is a low-voltage Si-gate CMOS device and is pin and function compatible 74HCT138. The74LV138 accepts three binary weighted address inputs (A0,A1,A2) and when enabled, provide 8 - mutually exclusive active LOW outputs (Y0 to Y7). The “138” features three enable inputs: two active LOW (CS2,CS3 and one active HIGH (CS1).Every output will be HIGH unless CS2, and CS3 are LOW and CS1 is HIGH. • • • • • • 16 1 D SUFFIX SOIC 16 1 ORDERING INFORMATION KK74LV138N Plastic KK74LV138D SOIC Optimized for Low Voltage applications:1.2 to 3.6 V Demultiplexing capability Multiple input enable for easy expansion Ideal for memory chip select decoding Active LOW mutually exclusive outputs Output capability: standard TA = -40° to 125° C for all packages PIN ASSIGNMENT LOGIC DIAGRAM FUNCTION TABLE Inputs PIN 16 =VCC PIN 8 = GND Outputs CS1 CS2 CS3 A2 A1 A0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 X X H X H X L X X X X X X X X X X X H H H H H H H H H H H H H H H H H H H H H H H H H H H H L L L L L L L L L L L L L L H H L H L H L H H H H L H H H H L H H H H L H H H H H H H H H H H H H H H H H H H H L L L L L L L L H H H H L L H H L H L H H H H H H H H H H H H H H H H H L H H H H L H H H H L H H H H L H = high level (steady state) L = low level (steady state) X = don’t care 1 KK74LV138 * MAXIMUM RATINGS Symbol Parameter Value Conditions Uni t VCC DC supply voltage -0.5 to +7.0 IIK DC input diode current ±20 VI< - 0.5 or VI> Vcc+0.5V mA IOK DC output diode current ±50 mA IO DC output source or sink current ±25 VO< - 0.5 or VO> Vcc+0.5V -0.5В<Vo<Vcc+0.5B ICC DC VCC or GND current for types with standard outputs ±50 mA Tstg Storage Temperature -65 to +150 °C PD Power Dissipation per package Plastic DIP+ SOIC Package+ TL Lead temperature, 1.5 mm from Case for 4 seconds (Plastic DIP ), 0.3 mm (SOIC Package) V mA mW 750 500 °C 260 * 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: - 12 mW/°C from 70° to 125°C SOIC Package: : - 8 mW/°C from 70° to 125°C RECOMMENDED OPERATING CONDITIONS Symbol Parameter Min Max Unit VCC DC supply voltage 1.0 5.5 V VIN, DC input voltage, 0 VCC V VO DC output voltage 0 VCC V TA Operating ambient temperature range in free air -40 +125 °C tr, tf Input rise and fall times except for Schmitt-trigger inputs 0 0 0 500 200 100 50 ns/B Vcc= 1.0 ÷ 2.0В Vcc= 2.0 ÷ 2.7В Vcc= 2.7 ÷ 3.6В Vcc= 3.6 ÷ 5.5В 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 KK74LV138 DC ELECTRICAL CHARACTERISTICS Symbol Parameter Test Conditions Guaranteed Limit VCC, В 25°C min VIH High-level input voltage 1.2 2.0 2.7 to 3.6 4.5 to 5.5 0.9 1.4 2.0 0.7 Vcc VIL Low -level input voltage 1.2 2.0 2.7 to 3.6 4.5 to 5.5 VOH High-level output voltage VOL Low-level output voltage max от -40°C to 85°C min max Unit от -40°C to 125°C min max 0.9 0.9 1.4 1.4 2.0 2.0 0.7 Vcc 0.7 Vcc 0.3 0.3 0.3 0.6 0.6 0.6 0.8 0.8 0.8 0.3 Vcc 0.3 Vcc 0.3 Vcc 1.8 1.8 2.5 2.5 2.8 2.8 3.4 3.4 4.3 4.3 5.3 5.3 2.40 2.20 3.60 3.50 В -I0=100µA VIH or VIL 1.2 2.0 2.7 3.0 3.6 4.5 5.5 1.85 2.55 2.85 3.45 4.35 5.35 VIH or VIL -IO=6.0 mA -IO=12.0 mA 3.0 4.5 2.48 3.70 VIH or VIL I0=100µA 1.2 2.0 3.0 - 0.15 0.15 0.15 - 0.2 0.2 0.2 - 0.2 0.2 0.2 B VIH or VIL IO=6.0 mA IO=12.0 mA 3.0 4.5 - 0.33 0.40 - 0.40 0.55 - 0.50 0.65 B В В B II Input leakage current VCC or GND 5.5 - ±0.1 - ±1.0 - ±1.0 мкА ICC Quiescent supply current VCC or GND IO=0 5.5 - 8.0 - 80 - 160 мкА 3 KK74LV138 AC ELECTRICAL CHARACTERISTICS (CL=50 pF, tLH = tHL = 2.5 nc, VIL=0B, VIH=VCC) Symbol Parameter VCC Guaranteed Limit V tPLH, tPHL Propagation delay, input A to output Y (Figures 1) tPLH, tPHL Propagation delay , CS1 to output Y (Figures 2) 1.2 2.0 2.7 3.0 4.5 1.2 2.0 2.7 3.0 4.5 tPLH, tPHL Output transition time, CS2 or CS3 to output Y (Figures 3) CIN Input capacitance 25°C min max - 150 33 23 19 14 170 35 26 21 17 170 35 26 21 17 7.0 - - 5.0 Т=+25 оС от -40°C to 85°C max min от -40°C to 125°C min max 150 36 26 21 16 170 39 29 23 19 170 39 29 23 19 - - - - - - 50% tPLH tPHL OUTPUT Y 50% Figure 1. Switching Waveforms GND ns ns 90 INPUT CS1 tPHL OUTPUT Y pF tf tr Vcc ns Typical @25°C,VCC=5.5 V Used to determine the no-load dynamic power consumption: PD=CPDVCC2f+ICCVCC INPUT A 180 44 33 26 20 200 49 36 29 24 200 49 36 29 24 pF Power dissipation capacitance (per enabled output) CPD Unit 90% 50% 10% Vcc GND tPLH 90% 50% 10% Figure 2. Switching Waveforms 4 KK74LV138 tr INPUT CS2,CS3 TEST POINT tPHL OUTPUT Y Vcc 90% 50% 10% GND DEVICE UNDER TEST OUTPUT tPLH 90% 50% 10% * C L * Includes all prode and jig capacitance Figure 3. Switching Waveforms Figure 4. Test Circuit EXPANDED LOGIC DIAGRAM 5 KK74LV138 N SUFFIX PLASTIC DIP (MS - 001BB) A Dimension, mm 9 16 B 1 8 Symbol MIN MAX A 18.67 19.69 B 6.1 7.11 5.33 C F L C -T- SEATING PLANE N G K D M H J 0.25 (0.010) M T 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 0.36 0.56 F 1.14 1.78 G 2.54 H 7.62 J 0° 10° K 2.92 3.81 L 7.62 8.26 M 0.2 0.36 N 0.38 D SUFFIX SOIC (MS - 012AC) Dimension, mm A 16 9 H B 1 G P 8 R x 45 C -TK D SEATING PLANE J 0.25 (0.010) M T C M 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. F M Symbol MIN MAX A 9.8 10 B 3.8 4 C 1.35 1.75 D 0.33 0.51 F 0.4 1.27 G 1.27 H 5.72 J 0° 8° K 0.1 0.25 M 0.19 0.25 P 5.8 6.2 R 0.25 0.5 6