M74HC298B1R

M74HC298 QUAD 2 CHANNEL MULTIPLEXER/REGISTER s s s s s s s HIGH SPEED: fMAX = 79 MHz (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 298 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HC298B1R M74HC298M1R T&R M74HC298RM13TR M74HC298TTR DESCRIPTION The M74HC298 is an high speed CMOS QUAD 2 CHANNEL MULTIPLEXER/REGISTER fabricated with silicon gate C2MOS technology. These circuits are controlled by the signals WORD SELECT and CLOCK . When the WORD SELECT input is taken low Word 1 (A1, B1, C1 and D1) is presented to the input of the flip-flops, and when WORD SELECT is high Word 2 (A2, B2, C2 and D2) is presented to the inputs of the flip-flops. The select word is clocked to the output terminals on the negative edge of the clock pulse. All inputs are equipped with protection circuits against static discharge and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS July 2001 1/11 M74HC298 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1, 2, 5, 6 3, 4, 7, 9 12 to 15 10 11 8 16 SYMBOL A2, B2, C2, D2 A1, B1, C1, D1 QA to QD WORD SELECT CLOCK GND VCC NAME AND FUNCTION Word 2 Data Inputs Word 1 Data Inputs Outputs Word Select Input Clock Input (LOW to HIGH, Edge-triggered) Ground (0V) Positive Supply Voltage TRUTH TABLE INPUTS WORD SELECT L H X CLOCK QA a1 a2 QA0 QB b1 b2 QB0 OUTPUTS QC c1 c2 QC0 QD d1 d2 QD0 X : Don’t Care a1, a2, ETC. : The level of steady state input at a1, a2, etc. QA0, QB0, ETC. : The level of QA, QB, ETC entered on the most recent negative transition of the clock input. LOGIC DIAGRAM This logic diagram has not be used to estimate propagation delays 2/11 M74HC298 ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO PD Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Power Dissipation Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 20 ± 20 ± 25 ± 50 500(*) -65 to +150 300 Unit V V V mA mA mA mA mW °C °C ICC or IGND DC VCC or Ground Current 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 VI VO Top tr, tf Supply Voltage Input Voltage Output Voltage Operating Temperature Input Rise and Fall Time VCC = 2.0V VCC = 4.5V VCC = 6.0V Parameter Value 2 to 6 0 to VCC 0 to VCC -55 to 125 0 to 1000 0 to 500 0 to 400 Unit V V V °C ns ns ns 3/11 M74HC298 DC SPECIFICATIONS Test Condition Symbol Parameter VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 VOL Low Level Output Voltage 2.0 4.5 6.0 4.5 6.0 II ICC Input Leakage Current Quiescent Supply Current 6.0 6.0 IO=-20 µA IO=-20 µA IO=-20 µA IO=-4.0 mA IO=-5.2 mA IO=20 µA IO=20 µA IO=20 µA IO=4.0 mA IO=5.2 mA VI = VCC or GND VI = VCC or GND TA = 25°C Min. 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 4.18 5.68 2.0 4.5 6.0 4.31 5.8 0.0 0.0 0.0 0.17 0.18 0.1 0.1 0.1 0.26 0.26 ± 0.1 4 1.9 4.4 5.9 4.13 5.63 0.1 0.1 0.1 0.33 0.33 ±1 40 Typ. Max. Value -40 to 85°C Min. 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 4.10 5.60 0.1 0.1 0.1 0.40 0.40 ±1 80 µA µA V V Max. -55 to 125°C Min. 1.5 3.15 4.2 0.5 1.35 1.8 Max. V Unit VIH High Level Input Voltage Low Level Input Voltage High Level Output Voltage VIL V VOH 4/11 M74HC298 AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns) Test Condition Symbol Parameter VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 TA = 25°C Min. Typ. 30 8 7 45 15 13 22 67 79 18 6 6 12 3 2 30 8 6 Max. 75 15 13 125 25 21 5.6 28 33 75 15 13 50 10 9 75 15 13 25 5 4 0 0 0 95 19 16 65 13 11 95 19 16 30 6 5 0 0 0 Value -40 to 85°C Min. Max. 95 19 16 155 31 26 4.6 23 25 110 22 19 75 15 13 110 22 19 40 8 7 0 0 0 -55 to 125°C Min. Max. 110 22 19 190 38 32 ns Unit tTLH tTHL Output Transition Time tPLH tPHL Propagation Delay Time (CLOCK - Q) fMAX Maximum Clock Frequency Minimum Pulse Width (CLOCK) Minimum Set-up Time (A, B, C, D to CLOCK) Minimum Set-up Time (W. S. to CLOCK) Minimum Hold Time (A, B, C, D to CLOCK) Minimum Hold Time (W. S. to CLOCK) ns 7 35 41 MHz tW(H) tW(L) tS ns ns tS ns tH ns tH ns CAPACITIVE CHARACTERISTICS Test Condition Symbol Parameter VCC (V) 5.0 5.0 TA = 25°C Min. Typ. 5 39 Max. 10 Value -40 to 85°C Min. Max. 10 -55 to 125°C Min. Max. 10 pF pF Unit CIN CPD Input Capacitance Power Dissipation Capacitance (note 1) 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/4 (per BIT), and the CPD for operating current can be obtained by the following equation : CPD = 27 + 12 x n 5/11 M74HC298 TEST CIRCUIT CL = 50pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) WAVEFORM 1 : PROPAGATION DELAY TIME, MINIMUM PULSE WIDTH (CLOCK) f=1MHz; 50% duty cycle) 6/11 M74HC298 WAVEFORM 2 : MINIMUM SETUP AND HOLD TIME (f=1MHz; 50% duty cycle) 7/11 M74HC298 Plastic DIP-16 (0.25) MECHANICAL DATA mm. DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.27 8.5 2.54 17.78 7.1 5.1 0.130 0.050 0.51 0.77 0.5 0.25 20 0.335 0.100 0.700 0.280 0.201 1.65 TYP MAX. MIN. 0.020 0.030 0.020 0.010 0.787 0.065 TYP. MAX. inch P001C 8/11 M74HC298 SO-16 MECHANICAL DATA DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8° (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45° (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010 PO13H 9/11 M74HC298 TSSOP16 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0° 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8° 0.75 0° 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8° 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0089 0.201 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 10/11 M74HC298 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. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © The ST logo is a registered trademark of STMicroelectronics © 2001 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom © http://www.st.com 11/11