SN74LS145 1-of-10 Decoder/Driver Open-Collector The SN74LS145, 1-of-10 Decoder/Driver, is designed to accept BCD inputs and provide appropriate outputs to drive 10-digit incandescent displays. All outputs remain off for all invalid binary input conditions. It is designed for use as indicator/relay drivers or as an open-collector logic circuit driver. Each of the high breakdown output transistors will sink up to 80 mA of current. Typical power dissipation is 35 mW. This device is fully compatible with all TTL families. http://onsemi.com LOW POWER SCHOTTKY • Low Power Version of 74145 • Input Clamp Diodes Limit High Speed Termination Effects GUARANTEED OPERATING RANGES Symbol VCC TA Parameter Supply Voltage Operating Ambient Temperature Range Min Typ Max Unit 4.75 5.0 5.25 V 0 25 70 °C 16 1 VOH Output Voltage – High 15 V IOL Output Current – Low 24 mA PLASTIC N SUFFIX CASE 648 16 1 SOIC D SUFFIX CASE 751B ORDERING INFORMATION Semiconductor Components Industries, LLC, 1999 December, 1999 – Rev. 6 1 Device Package Shipping SN74LS145N 16 Pin DIP 2000 Units/Box SN74LS145D 16 Pin 2500/Tape & Reel Publication Order Number: SN74LS145/D SN74LS145 CONNECTION DIAGRAM DIP (TOP VIEW) VCC P0 P1 P2 P3 Q9 Q8 Q7 16 15 14 13 12 11 10 9 8 1 2 3 4 5 6 7 Q0 Q1 Q2 Q3 Q4 Q5 Q6 GND LOADING (Note a) HIGH LOW 0.5 U.L. Open Collector 0.25 U.L. 15 U.L. PIN NAMES P0, P1, P2, P3 Q0 – Q9 BCD Inputs Outputs NOTES: a) 1 TTL Unit Load (U.L.) = 40 mA HIGH/1.6 mA LOW. LOGIC SYMBOL 15 14 13 12 P0 P1 P2 P3 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 1 2 3 4 5 6 7 9 10 11 VCC = PIN 16 GND = PIN 8 http://onsemi.com 2 SN74LS145 LOGIC DIAGRAM INPUTS P0 P1 P2 P3 INPUT INVERTERS 0 0 Q0 Q1 1 1 2 2 3 3 Q3 Q4 Q5 Q6 Q7 DECODE/DRIVER GATES Q2 Q8 Q9 OUTPUTS TRUTH TABLE INPUTS OUTPUTS P3 P2 P1 P0 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 L L L L L L L L H H H H H H H H L L L L H H H H L L L L H H H H L L H H L L H H L L H H L L H H L H L H L H L H L H L H L H L H L H H H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H L H H H H H H H = HIGH Voltage Level L = LOW Voltage Level http://onsemi.com 3 SN74LS145 DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Limits Symbol Parameter Min VIH Input HIGH Voltage VIL Input LOW Voltage VIK Input Clamp Diode Voltage IOH Output HIGH Current VOL Output LOW Voltage IIH Input HIGH Current IIL Input LOW Current ICC Power Supply Current Typ Max Unit Test Conditions V Guaranteed Input HIGH Voltage for All Inputs V Guaranteed Input LOW Voltage for All Inputs – 1.5 V VCC = MIN, IIN = – 18 mA 250 µA VCC = MIN, VOH = MAX 0.25 0.4 V IOL = 12 mA 0.35 0.5 V IOL = 24 mA 2.3 3.0 V IOL = 80 mA 2.0 0.8 – 0.65 VCC = VCC MIN, VIN = VIL or VIH per Truth T hT Table bl 20 µA VCC = MAX, VIN = 2.7 V 0.1 mA VCC = MAX, VIN = 7.0 V – 0.4 mA VCC = MAX, VIN = 0.4 V 13 mA VCC = MAX, VIN = GND AC CHARACTERISTICS (TA = 25°C) Limits Symbol tPHL tPLH Parameter Min Typ Propagation Delay Pn Input to Qn Output Max Unit Test Conditions 50 50 ns VCC = 5.0 V CL = 45 pF AC WAVEFORMS VIN 1.3 V tPHL VOUT VIN 1.3 V 1.3 V tPLH VOUT 1.3 V Figure 1. 1.3 V 1.3 V tPHL tPLH 1.3 V 1.3 V Figure 2. http://onsemi.com 4 SN74LS145 PACKAGE DIMENSIONS N SUFFIX PLASTIC PACKAGE CASE 648–08 ISSUE R NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 4. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 5. ROUNDED CORNERS OPTIONAL. –A– 16 9 1 8 B F C L S –T– SEATING PLANE K H G D M J 16 PL 0.25 (0.010) M T A M http://onsemi.com 5 DIM A B C D F G H J K L M S INCHES MIN MAX 0.740 0.770 0.250 0.270 0.145 0.175 0.015 0.021 0.040 0.70 0.100 BSC 0.050 BSC 0.008 0.015 0.110 0.130 0.295 0.305 0_ 10 _ 0.020 0.040 MILLIMETERS MIN MAX 18.80 19.55 6.35 6.85 3.69 4.44 0.39 0.53 1.02 1.77 2.54 BSC 1.27 BSC 0.21 0.38 2.80 3.30 7.50 7.74 0_ 10 _ 0.51 1.01 SN74LS145 PACKAGE DIMENSIONS D SUFFIX PLASTIC SOIC PACKAGE CASE 751B–05 ISSUE J –A– 16 9 1 8 –B– P NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 8 PL 0.25 (0.010) M B S G R K F X 45 _ C –T– SEATING PLANE J M D 16 PL 0.25 (0.010) M T B S A S http://onsemi.com 6 DIM A B C D F G J K M P R MILLIMETERS MIN MAX 9.80 10.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.386 0.393 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.229 0.244 0.010 0.019 SN74LS145 Notes http://onsemi.com 7 SN74LS145 ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. 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