M54HC85 M74HC85 4-BIT MAGNITUDE COMPARATOR . . . . . . . . HIGH SPEED tPD = 22 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 54/74LS85 B1R (Plastic Package) F1R (Ceramic Package) M1R (Micro Package) C1R (Chip Carrier) ORDER CODES : M54HC85F1R M74HC85M1R M74HC85B1R M74HC85C1R DESCRIPTION PIN CONNECTIONS (top view) The M54/74HC85 is a high speed CMOS 4-BIT MAGNITUDE COMPARATOR fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combined with true CMOS low power consumption. This comparator compares two 4-bit words and provides a high voltage level on one of the A > B out, A = B out and A < B out outputs. The comparing bit number is easily expanded by cascading several devices as shown in the typical application. All inputs are equipped with protection circuits against static discharge and transient excess voltage. INPUT AND OUTPUT EQUIVALENT CIRCUIT NC = No Internal Connection December 1992 1/11 M54/M74HC85 PIN DESCRIPTION IEC LOGIC SYMBOL PIN No SYMBOL NAME AND FUNCTION 2 3 IN A<B IN A=B A<B Expansion Input A=B Expansion Input 4 IN A>B A>B Expansion Input 5 6 OUTA>B OUTA=B A>B Expansion Output A=B Expansion Output 7 OUTA<B A<B Expansion Output 9, 11, 14, 1 B0 to B3 Word B Inputs 10, 12, 13, 15 A0 to A3 8 16 GND VCC LOCIG DIAGRAM 2/11 Word A Inputs Ground (0V) Positive Supply Voltage M54/M74HC85 TRUTH TABLE CASCADING INPUTS COMPARING INPUTS X X A>B X A<B X A=B X A>B H A<B L A=B L A2>B2 X X X X X H L L A2=B2 A2=B2 A1>B1 A1=B1 X A0>B0 X X X X X X H H L L L L A3>B3 X A3=B3 A3=B3 A3=B3 A3=B3 OUTPUTS A2=B2 A1=B1 A0=B0 L L L H H L X X H L L H L H L L H L H L L H L L H X L X L L L H L L A3=B3 A2=B2 A1=B1 A0<B0 H X A3=B3 A2=B2 A1<B1 X X X X L H L A3=B3 A3<B3 A2<B2 X X X X X X X X X X X L L H H L L X: DON’T CARE ABSOLUTE MAXIMUM RATINGS Symbol Parameter VCC Supply Voltage VI VO DC Input Voltage DC Output Voltage IIK IOK IO ICC or IGND 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 DC VCC or Ground Current ± 50 mA 500 (*) mW PD Power Dissipation Tstg Storage Temperature TL Lead Temperature (10 sec) -65 to +150 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 3/11 M54/M74HC85 RECOMMENDED OPERATING CONDITIONS Symbol Parameter Value Unit V V VCC VI Supply Voltage Input Voltage 2 to 6 0 to VCC VO Output Voltage 0 to VCC Top tr, tf Operating Temperature: M54HC Series M74HC Series Input Rise and Fall Time V o -55 to +125 -40 to +85 0 to 1000 VCC = 2 V VCC = 4.5 V 0 to 500 VCC = 6 V 0 to 400 C C ns o DC SPECIFICATIONS Test Conditions Symbol VIH V IL V OH VOL Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage VCC (V) 2.0 Min. 1.5 4.5 3.15 6.0 2.0 4.2 6.0 2.0 ICC 4/11 Quiescent Supply Current Max. -40 to 85 oC -55 to 125 oC 74HC 54HC Min. 1.5 Max. 3.15 Min. 1.5 4.2 4.2 0.5 0.5 1.35 1.35 1.35 1.8 2.0 1.9 1.9 4.5 4.4 4.4 6.0 4.5 5.9 4.18 6.0 4.31 5.9 4.13 5.9 4.10 6.0 IO=-5.2 mA 5.68 5.8 5.63 5.60 6.0 6.0 V 1.8 1.9 4.4 2.0 4.5 V 0.5 1.8 Unit Max. 3.15 VI = IO=-20 µA VIH or V IL IO=-4.0 mA 4.5 4.5 6.0 Input Leakage Current Typ. 4.5 6.0 II Value TA = 25 oC 54HC and 74HC V 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.0 0.1 0.1 0.1 0.17 0.18 0.26 0.26 0.33 0.33 0.40 0.40 VI = VCC or GND ±0.1 ±1 ±1 µA VI = VCC or GND 4 40 80 µA VI = IO= 20 µA VIH or V IL IO= 4.0 mA IO= 5.2 mA V M54/M74HC85 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 (A, B-OUT) tPLH tPHL Propagation Delay Time (CASCADE-OUT) Value o VCC (V) TA = 25 C 54HC and 74HC Min. Typ. Max. -40 to 85 oC -55 to 125 oC 74HC 54HC Min. Max. Min. Max. 2.0 30 75 95 110 4.5 6.0 8 7 15 13 19 16 22 19 Unit ns 2.0 96 185 230 280 4.5 24 37 46 56 6.0 20 31 39 48 2.0 48 95 120 145 4.5 6.0 12 10 19 16 24 20 29 25 ns 10 10 10 pF CIN Input Capacitance 5 CPD (*) Power Dissipation Capacitance 23 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 SWITCHING CHARACTERISTICS TEST WAVEFORM TEST CIRCUIT ICC (Opr.) INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST. 5/11 M54/M74HC85 TYPICAL APPLICATION LSB = lowest significant bit MSB = MOST SIGNIFICANT BIT COMPARING INPUTS 6/11 OUTPUTS A>B A=B A<B A>B A=B A<B X X X H L L H L L H L L (A)=(B) X L H L X H L L H L L H (A)<(B) X X X L L H (A)>(B) X: DON’T CARE CASCADING INPUTS M54/M74HC85 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 7/11 M54/M74HC85 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 8/11 M54/M74HC85 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 9/11 M54/M74HC85 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 10/11 M54/M74HC85 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 11/11