M54HC42 M74HC42 BCD TO DECIMAL DECODER . . . . . . . . HIGH SPEED tPD = 13 ns (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 4 µA (MAX.) AT TA = 25 °C HIGH NOISE IMMUNITY VNIH = VNIL = 28 % VCC (MIN.) OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS SYMMETRICAL OUTPUT IMPEDANCE |IOH| = IOL = 4 mA (MIN.) BALANCED PROPAGATION DELAYS tPLH = tPHL WIDE OPERATING VOLTAGE RANGE VCC (OPR) = 2 V TO 6 V PIN AND FUNCTION COMPATIBLE WITH 54/74LS42 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HC42F1R M74HC42M1R M74HC42B1R M74HC42C1R DESCRIPTION The M54/74HC42 is a high speed CMOS BCD-TODECIMAL DECODER fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. A BCD code applied to the four inputs A-D selects one of ten decimal outputs Y0-Y9, which goes low to fifteen gives a high level at all outputs. This device also can be used as a 3-to-8 LINE DECODER, when the D input is assigned as a disable input. This device is useful for code conversion, address decoding, memory selection, demultiplexing, or readout decoding. All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTIONS (top view) INPUT AND OUTPUT EQUIVALENT CIRCUIT NC = No Internal Connection December 1992 1/10 M54/M74HC42 PIN DESCRIPTION IEC LOGIC SYMBOL PIN No SYMBOL NAME AND FUNCTION 15, 14, 13, 12 1, 2, 3, 4, 5, 6, 7, 9, 10, 11 8 A, B, C, D Data Inputs GND Ground (0V) 16 VCC Positive Supply Voltage Y0 to Y9 LOGIC DIAGRAM 2/10 Multiplexer Outputs M54/M74HC42 FUNCTIONAL TABLE CODE No. BCD INPUTS DECIMAL OUTPUTS 0 D L C L B L A L Y0 L Y1 H Y2 H Y3 H Y4 H Y5 H Y6 H Y7 H Y8 H Y9 H 1 L L L H H L H H H H H H H H 2 3 L L L L H H L H H H H H L H H L H H H H H H H H H H H H 4 L H L L H H H H L H H H H H 5 L H L H H H H H H L H H H H 6 L H H L H H H H H H L H H H 7 8 L H H L H L H L H H H H H H H H H H H H H H L H H L H H 9 H L L H H H H H H H H H H L 10 11 H H L L H H L H H H H H H H H H H H H H H H H H H H H H 12 H H L L H H H H H H H H H H 13 14 H H H H L H H L H H H H H H H H H H H H H H H H H H H H 15 H H H H H H H H H H H H H H ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit -0.5 to +7 V -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 V V DC Input Diode Current ± 20 mA DC Output Diode Current DC Output Source Sink Current Per Output Pin ± 20 ± 25 mA mA VCC Supply Voltage VI VO DC Input Voltage DC Output Voltage IIK IOK IO ICC or IGND DC VCC or Ground Current PD Tstg Power Dissipation Storage Temperature TL Lead Temperature (10 sec) ± 50 mA 500 (*) -65 to +150 mW o C 300 o C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied. (*) 500 mW: ≅ 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC RECOMMENDED OPERATING CONDITIONS Symbol Parameter Value Unit VCC Supply Voltage 2 to 6 V VI VO Input Voltage Output Voltage 0 to VCC 0 to VCC V V Top Operating Temperature: M54HC Series M74HC Series tr, tf Input Rise and Fall Time -55 to +125 -40 to +85 VCC = 2 V VCC = 4.5 V 0 to 1000 0 to 500 VCC = 6 V 0 to 400 o o C C ns 3/10 M54/M74HC42 DC SPECIFICATIONS Test Conditions Symbol VIH V IL V OH Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage II ICC Low Level Output Voltage Input Leakage Current Quiescent Supply Current TA = 25 C 54HC and 74HC Min. Typ. Max. VCC (V) -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. 2.0 1.5 1.5 1.5 4.5 6.0 3.15 4.2 3.15 4.2 3.15 4.2 2.0 0.5 0.5 0.5 1.35 1.35 1.35 6.0 1.8 1.8 1.8 2.0 4.5 6.0 6.0 2.0 Unit V 4.5 4.5 VOL Value o VI = IO=-20 µA VIH or V IL IO=-4.0 mA 1.9 2.0 1.9 1.9 4.4 5.9 4.5 6.0 4.4 5.9 4.4 5.9 4.18 4.31 4.13 4.10 IO=-5.2 mA 5.68 5.8 0.0 5.63 0.1 0.1 0.1 V V 5.60 0.0 0.1 0.1 0.1 6.0 4.5 VI = IO= 20 µA VIH or V IL IO= 4.0 mA 0.0 0.17 0.1 0.26 0.1 0.33 0.1 0.40 6.0 IO= 5.2 mA 0.18 0.26 0.33 0.40 VI = VCC or GND ±0.1 ±1 ±1 µA VI = VCC or GND 4 40 80 µA 4.5 6.0 6.0 V AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns) Test Conditions Symbol Parameter tTLH tTHL Output Transition Time tPLH tPHL Propagation Delay Time Value VCC (V) TA = 25 oC 54HC and 74HC Min. Typ. Max. -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. Unit 2.0 30 75 95 110 4.5 6.0 8 7 15 13 19 16 22 19 2.0 64 130 165 195 4.5 6.0 16 14 26 22 33 28 39 33 ns 10 10 10 pF CIN Input Capacitance 5 CPD (*) Power Dissipation Capacitance 60 ns pF (*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC 4/10 M54/M74HC42 SWITCHING CHARACTERISTICS TEST WAVEFORM TEST CIRCUIT ICC (Opr.) INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTIC TEST 5/10 M54/M74HC42 Plastic DIP16 (0.25) MECHANICAL DATA mm DIM. MIN. a1 0.51 B 0.77 TYP. inch MAX. MIN. TYP. MAX. 0.020 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 I 5.1 0.201 L Z 3.3 0.130 1.27 0.050 P001C 6/10 M54/M74HC42 Ceramic DIP16/1 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 20 0.787 B 7 0.276 D E 3.3 0.130 0.38 e3 0.015 17.78 0.700 F 2.29 2.79 0.090 0.110 G 0.4 0.55 0.016 0.022 H 1.17 1.52 0.046 0.060 L 0.22 0.31 0.009 0.012 M 0.51 1.27 0.020 0.050 N P Q 10.3 7.8 8.05 5.08 0.406 0.307 0.317 0.200 P053D 7/10 M54/M74HC42 SO16 (Narrow) MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.004 0.007 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 0.019 c1 45° (typ.) D 9.8 E 5.8 10 0.385 6.2 0.228 0.393 0.244 e 1.27 0.050 e3 8.89 0.350 F 3.8 4.0 0.149 0.157 G 4.6 5.3 0.181 0.208 L 0.5 1.27 0.019 0.050 M S 0.62 0.024 8° (max.) P013H 8/10 M54/M74HC42 PLCC20 MECHANICAL DATA mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 9.78 10.03 0.385 0.395 B 8.89 9.04 0.350 0.356 D 4.2 4.57 0.165 0.180 d1 2.54 0.100 d2 0.56 0.022 E 7.37 8.38 0.290 0.330 e 1.27 0.050 e3 5.08 0.200 F 0.38 0.015 G 0.101 0.004 M 1.27 0.050 M1 1.14 0.045 P027A 9/10 M54/M74HC42 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of SGS-THOMSON Microelectonics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A 10/10