M54HC85 RAD HARD 4-BIT MAGNITUDE COMPARATOR ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 20 ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC =4µA(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 54 SERIES 85 SPACE GRADE-1: ESA SCC QUALIFIED 50 krad QUALIFIED, 100 krad AVAILABLE ON REQUEST NO SEL UNDER HIGH LET HEAVY IONS IRRADIATION DEVICE FULLY COMPLIANT WITH SCC-9209-004 DESCRIPTION The M54HC85 is an high speed CMOS 4-BIT MAGNITUDE COMPARATOR fabricated with silicon gate C2MOS technology. DILC-16 FPC-16 ORDER CODES PACKAGE FM EM DILC FPC M54HC85D M54HC85K M54HC85D1 M54HC85K1 This comparator compares two 4-bit words and provides an 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. PIN CONNECTION June 2004 Rev. 1 1/10 M54HC85 Figure 1: IEC Logic Symbols Figure 2: Input And Output Equivalent Circuit Table 1: Pin Description PIN N° SYMBOL 2 INA<B A<B Expansion Input 3 INA=B A=B Expansion Input 4 INA>B A>B Expansion Input 5 OUTA>B A>B Expansion Output 6 OUTA=B 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 8 A0 to A3 Word A Inputs GND VCC 16 NAME AND FUNCTION Ground (0V) Positive Supply Voltage Table 2: Truth Table CASCADING INPUTS OUTPUTS COMPARING INPUTS A3 > B3 A3 = B3 A3 = B3 A3 = B3 X A2 > B2 A2 = B2 A2 = B2 X X A1 > B1 A1 = B1 X X X A0 > B0 A3 = B3 A2 = B2 A1 = B1 A0 = B0 A3 = B3 A3 = B3 A3 = B3 A3 < B3 A2 = B2 A2 = B2 A2 < B2 X A1 = B1 A1 > B1 X X A0 < B0 X X X X : Don’t Care 2/10 A>B A<B A=B A>B A<B A=B X X X X L X L H H X X X X X X X X L X H L H X X X X X X X X L H L L L X X X X H H H H H L L H L L L L L L L L L H L H L L H H H H L L L L L H L L L L L L L M54HC85 Figure 3: Logic Diagram This logic diagram has not be used to estimate propagation delays Table 3: Absolute Maximum Ratings Symbol VCC Parameter Supply Voltage Value Unit -0.5 to +7 V -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 V DC Input Diode Current ± 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output Current ± 25 mA ± 50 mA VI DC Input Voltage VO DC Output Voltage IIK ICC or IGND DC VCC or Ground Current PD Power Dissipation Tstg Storage Temperature TL Lead Temperature (10 sec) V 300 mW -65 to +150 °C 265 °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied Table 4: Recommended Operating Conditions Symbol VCC Parameter Supply Voltage Value Unit 2 to 6 V VI Input Voltage 0 to VCC V VO Output Voltage 0 to VCC V Top Operating Temperature Input Rise and Fall Time tr, tf -55 to 125 °C VCC = 2.0V 0 to 1000 ns VCC = 4.5V 0 to 500 ns VCC = 6.0V 0 to 400 ns 3/10 M54HC85 Table 5: DC Specifications Test Condition Symbol VIH VIL VOH VOL II ICC Parameter High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Input Leakage Current Quiescent Supply Current Value TA = 25°C VCC (V) Min. 2.0 4.5 6.0 2.0 4.5 6.0 Typ. Max. 1.5 3.15 4.2 -40 to 85°C -55 to 125°C Min. Min. Max. 1.5 3.15 4.2 0.5 1.35 1.8 Max. 1.5 3.15 4.2 0.5 1.35 1.8 Unit V 0.5 1.35 1.8 2.0 IO=-20 µA 1.9 2.0 1.9 1.9 4.5 IO=-20 µA 4.4 4.5 4.4 4.4 6.0 IO=-20 µA 5.9 6.0 5.9 5.9 4.5 IO=-4.0 mA 4.18 4.31 4.13 4.10 6.0 IO=-5.2 mA 5.68 5.8 5.63 5.60 2.0 IO=20 µA 0.0 0.1 0.1 0.1 4.5 IO=20 µA 0.0 0.1 0.1 0.1 V V 6.0 IO=20 µA 0.0 0.1 0.1 0.1 4.5 IO=4.0 mA 0.17 0.26 0.33 0.40 6.0 IO=5.2 mA 0.18 0.26 0.33 0.40 6.0 VI = VCC or GND ± 0.1 ±1 ±1 µA 6.0 VI = VCC or GND 4 40 80 µA V Table 6: AC Electrical Characteristics (CL = 50 pF, Input tr = tf = 6ns) Test Condition Symbol Parameter tTLH tTHL Output Transition Time tPLH tPHL Propagation Delay Time (A, B-OUT) tPLH tPHL Propagation Delay Time (CASCADE-OUT) 4/10 VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Value TA = 25°C Min. Typ. Max. 30 8 7 96 24 20 48 12 10 75 15 13 185 37 31 95 19 16 -40 to 85°C -55 to 125°C Min. Min. Max. 95 19 16 230 46 39 120 24 20 Unit Max. 110 22 19 280 56 48 145 29 25 ns ns ns M54HC85 Table 7: Capacitive Characteristics Test Condition Symbol Parameter VCC (V) Value TA = 25°C Min. Typ. Max. 10 CIN Input Capacitance 5.0 5 CPD Power Dissipation Capacitance (note 1) 5.0 23 -40 to 85°C -55 to 125°C Min. Min. Max. 10 Unit Max. 10 pF pF 1) 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 operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC Figure 4: Test Circuit CL = 50pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) 5/10 M54HC85 Figure 5: Waveform - Propagation Delay Time (f=1MHz; 50% duty cycle) 6/10 M54HC85 DILC-16 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 2.1 2.71 0.083 0.107 a1 3.00 3.70 0.118 0.146 a2 0.63 1.14 0.025 B 1.82 2.39 0.072 b 0.40 0.45 0.50 0.016 0.018 0.020 b1 0.20 0.254 0.30 0.008 0.010 0.012 D 20.06 20.32 20.58 0.790 0.800 0.810 E 7.36 7.62 7.87 0.290 0.300 0.310 e 0.88 2.54 0.035 0.045 0.094 0.100 e1 17.65 17.78 17.90 0.695 0.700 0.705 e2 7.62 7.87 8.12 0.300 0.310 0.320 F 7.29 7.49 7.70 0.287 0.295 0.303 I 3.83 0.151 K 10.90 12.1 0.429 0.476 L 1.14 1.5 0.045 0.059 0056437F 7/10 M54HC85 FPC-16 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. MIN. TYP. MAX. A 6.75 6.91 7.06 0.266 0.272 0.278 B 9.76 9.94 10.14 0.384 0.392 0.399 C 1.49 1.95 0.059 D 0.102 0.127 0.152 0.004 0.005 0.006 E 8.76 8.89 9.01 0.345 0.350 0.355 F 0.077 1.27 G 0.38 H 6.0 L 18.75 M 0.33 0.050 0.43 0.48 0.015 0.017 0.019 0.237 0.38 N 22.0 0.738 0.43 0.013 0.867 0.015 4.31 0.017 0.170 G F D H 9 16 A N L 8 1 H E B 8/10 M C 0016030E M54HC85 Table 8: Revision History Date Revision 01-Jun-2004 1 Description of Changes First Release 9/10 M54HC85 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. 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