M74HC688B1R

M74HC688 8 BIT EQUALITY COMPARATOR ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: tPD = 17ns (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC = 4µA(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 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 74 SERIES 688 DESCRIPTION The M74HC688 is an high speed CMOS 8 BIT EQUALITY COMPARATOR fabricated with silicon gate C2MOS technology. The M74HC688 compares bit for bit two 8-bit words applied on inputs P0 - P7 and inputs Q0 Q7 and indicates whether or not they are equal. A ) (s t c u DIP PACKAGE TUBE t e l o s b O TSSOP u d o r P e ORDER CODES DIP SOP TSSOP ) s ( ct SOP M74HC688B1R M74HC688M1R T&R M74HC688RM13TR M74HC688TTR single active low enable is provided to facilitate cascading several packages to enable comparison of words greater than 8 bits. All inputs are equipped with protection circuits against static discharge and transient excess voltage. d o r P e t e l o s b O PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/9 M74HC688 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL 1 G 2, 4, 6, 8, 11, 13, 15, 17 3, 5, 7, 9, 12, 14, 16, 18 19 10 20 P0 to P7 Enable Input (Active LOW) Word Inputs Q0 to Q7 Word Outputs P=Q GND VCC NAME AND FUNCTION Equal to Output Ground (0V) Positive Supply Voltage ) s ( ct TRUTH TABLE u d o INPUTS OUTPUT P, Q G P=Q P Q X L L H e t e ol X: Don’t Care LOGIC DIAGRAM ) (s t c u d o r P e t e l o s b O This logic diagram has not be used to estimate propagation delays 2/9 s b O Pr P=Q L H H M74HC688 ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Value Supply Voltage 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 500(*) mW 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 ) s ( t -65 to +150 300 c u d °C °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied (*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C RECOMMENDED OPERATING CONDITIONS Symbol VCC e t e l Parameter Supply Voltage VI Input Voltage VO Output Voltage Top Operating Temperature Input Rise and Fall Time o s b tr, tf s ( t c O ) u d o o r P Value Unit 2 to 6 V 0 to VCC V 0 to VCC V -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 r P e t e l o s b O 3/9 M74HC688 DC SPECIFICATIONS Test Condition Symbol VIH Parameter High Level Input Voltage Low Level Input Voltage VIL High Level Output Voltage VOH VOL II Low Level Output Voltage ICC 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 1.9 2.0 1.9 1.9 IO=-20 µA 4.4 4.5 4.4 4.4 du IO=-20 µA 5.9 6.0 5.9 4.18 4.31 4.13 5.68 5.9 6.0 IO=-5.2 mA 2.0 IO=20 µA 0.0 0.1 4.5 IO=20 µA 0.0 0.1 o r P 6.0 IO=20 µA 0.0 0.1 4.5 IO=4.0 mA 0.17 6.0 IO=5.2 mA 0.18 6.0 6.0 5.8 5.63 V ) s ( ct IO=-20 µA 4.5 IO=-4.0 mA V 0.5 1.35 1.8 2.0 4.5 Max. 1.5 3.15 4.2 0.5 1.35 1.8 6.0 Unit V 4.10 5.60 0.1 0.1 0.1 0.1 0.1 0.1 0.26 0.33 0.40 0.26 0.33 0.40 VI = VCC or GND ± 0.1 ±1 ±1 µA VI = VCC or GND 4 40 80 µA ) (s e t e l so b O t c u V AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns) Symbol d o r P e Parameter let o s b tTLH tTHL Output Transition Time O tPLH tPHL Propagation Delay Time (Pn, Qn - P=Q) tPLH tPHL Propagation Delay Time (G - P=Q) 4/9 VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Test Condition Value TA = 25°C Min. Typ. Max. 30 8 7 60 21 17 40 13 10 75 15 13 170 34 29 110 22 19 -40 to 85°C -55 to 125°C Min. Min. Max. 95 19 16 215 43 37 140 28 24 Unit Max. 110 22 19 255 51 43 165 33 28 ns ns ns M74HC688 CAPACITIVE CHARACTERISTICS Test Condition Symbol Parameter Value TA = 25°C VCC (V) Min. Typ. Max. 10 CIN Input Capacitance 5 CPD Power Dissipation Capacitance (note 1) 32 -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 ) s ( ct TEST CIRCUIT u d o r P e t e l o ) (s s b O t c u d o r CL = 50pF/150pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) P e WAVEFORM : PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle) t e l o s b O 5/9 M74HC688 Plastic DIP-20 (0.25) MECHANICAL DATA mm. inch DIM. MIN. TYP a1 0.254 B 1.39 MAX. MIN. TYP. MAX. 0.010 1.65 0.055 0.065 b 0.45 0.018 b1 0.25 0.010 D ) s ( ct 25.4 E 8.5 e 2.54 e3 22.86 u d o 0.335 F 7.1 I 3.93 L s ( t c e t e ol bs O ) 3.3 Z 1.000 1.34 Pr 0.100 0.900 0.280 0.155 0.130 0.053 u d o r P e t e l o s b O P001J 6/9 M74HC688 SO-20 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. a1 2.65 MAX. 0.1 0.104 0.2 a2 0.004 0.008 2.45 0.096 b 0.35 0.49 0.014 b1 0.23 0.32 0.009 C 0.5 0.019 ) s ( ct 0.012 0.020 c1 u d o 45° (typ.) D 12.60 13.00 0.496 E 10.00 10.65 0.393 e 1.27 e3 11.43 F 7.40 7.60 L 0.50 1.27 M ) (s S e t e ol s b O 0.75 Pr 0.512 0.419 0.050 0.450 0.291 0.300 0.020 0.050 0.029 8° (max.) t c u d o r P e t e l o s b O PO13L 7/9 M74HC688 TSSOP20 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 c 0.09 0.20 0.004 D 6.4 6.5 6.6 0.252 E 6.2 6.4 6.6 0.244 E1 4.3 4.4 4.48 1 e bs 0.65 BSC K 0° L 0.45 let o s b 0.60 s ( t c 0.75 du ro P e A2 A1 b 0.260 0.252 0.260 0.173 0.176 0.0256 BSC 0° 8° 0.018 0.024 O K e 0.030 L E c D E1 PIN 1 IDENTIFICATION 1 0087225C 8/9 0.0089 0.256 u d o r P e A O ) 8° 0.012 t e l o 0.169 ) s ( ct M74HC688 ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 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. 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