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| 74VHCT273A OCTAL D-TYPE FLIP FLOP WITH CLEAR s s s s s s s s s s HIGH SPEED: fMAX = 170 MHz (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4 A (MAX.) at TA=25C COMPATIBLE WITH TTL OUTPUTS: VIH = 2V (MIN.), VIL = 0.8V (MAX) POWER DOWN PROTECTION ON INPUTS & OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH tPHL OPERATING VOLTAGE RANGE: VCC(OPR) = 4.5V to 5.5V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 273 IMPROVED LATCH-UP IMMUNITY LOW NOISE: VOLP = 0.9V (MAX.) SOP TSSOP Table 1: Order Codes PACKAGE SOP TSSOP T&R 74VHCT273AMTR 74VHCT273ATTR DESCRIPTION The 74VHCT273A is an advanced high-speed CMOS OCTAL D-TYPE FLIP FLOP WITH CLEAR fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. Information signals applied to D inputs are transferred to the Q outputs on the positive going edge of the clock pulse. When the CLEAR input is held low, the Q outputs are held low independently of the other inputs. Power down protection is provided on all inputs and outputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V since all inputs are equipped with TTL threshold. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. Figure 1: Pin Connection And IEC Logic Symbols December 2004 Rev. 3 1/13 74VHCT273A Figure 2: Input Equivalent Circuit Table 2: Pin Description PIN N 1 2, 5, 6, 9, 12, 15, 16,19 3, 4, 7, 8, 13, 14, 17, 18 11 10 20 SYMBOL CLEAR Q0 to Q7 D0 to D7 CLOCK GND VCC NAME AND FUNCTION Asynchronous Master Reset (Active LOW) Flip-Flop Outputs Data Inputs Clock Input (LOW-to-HIGH Edge Triggered) Ground (0V) Positive Supply Voltage Table 3: Truth Table INPUTS CLEAR L H H H X: Don't care OUTPUT FUNCTION CLOCK X Q L L H Qn NO CHANGE CLEAR D X L H X Table 4: Logic Diagram This logic diagram has not be used to estimate propagation delays 2/13 74VHCT273A Table 5: Absolute Maximum Ratings Symbol VCC VI VO VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage (see note 1) DC Output Voltage (see note 2) DC Input Diode Current DC Output Diode Current DC Output Current Parameter Value -0.5 to +7.0 -0.5 to +7.0 -0.5 to +7.0 -0.5 to VCC + 0.5 - 20 20 25 50 -65 to +150 300 Unit V V V V mA mA mA mA C C ICC or IGND DC VCC or Ground Current Tstg Storage Temperature TL Lead Temperature (10 sec) Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied 1) VCC = 0V 2) High or Low State Table 6: Recommended Operating Conditions Symbol VCC VI VO VO Top dt/dv Supply Voltage Input Voltage Output Voltage (see note 1) Output Voltage (see note 2) Operating Temperature Input Rise and Fall Time (see note 3) (VCC = 5.0 0.5V) Parameter Value 4.5 to 5.5 0 to 5.5 0 to 5.5 0 to VCC -55 to 125 0 to 20 Unit V V V V C ns/V 1) VCC = 0V 2) High or Low State 3) VIN from 0.8V to 2V 3/13 74VHCT273A Table 7: DC Specifications Test Condition Symbol Parameter VCC (V) 4.5 to 5.5 4.5 to 5.5 4.5 4.5 4.5 4.5 0 to 5.5 5.5 5.5 0 IO=-50 A IO=-8 mA IO=50 A IO=8 mA VI = 5.5V or GND VI = VCC or GND One Input at 3.4V, other input at VCC or GND VOUT = 5.5V TA = 25C Min. 2 0.8 4.4 3.94 0.0 0.1 0.36 0.1 4 1.35 0.5 4.5 4.4 3.8 0.1 0.44 1.0 40 1.5 5.0 Typ. Max. Value -40 to 85C Min. 2 0.8 4.4 3.7 0.1 0.55 1.0 40 1.5 5.0 Max. -55 to 125C Min. 2 0.8 Max. V V V V A A mA A Unit VIH VIL VOH VOL II ICC +ICC High Level Input Voltage Low Level Input Voltage High Level Output Voltage Low Level Output Voltage Input Leakage Current Quiescent Supply Current Additional Worst Case Supply Current Output Leakage Current IOPD Table 8: AC Electrical Characteristics (Input tr = tf = 3ns) Test Condition Symbol Parameter VCC (V) 5.0(**) 5.0 (**) Value TA = 25C Min. Typ. 5.8 6.8 7.5 8.5 5.0 5.0 2.0 2.0 1.0 Max. 8.2 9.2 10.0 11.0 -40 to 85C Min. 1.0 1.0 1.0 1.0 5.0 5.0 2.0 2.0 1.0 170 160 1.0 65 45 1.0 Max. 10.0 11.0 11.6 12.6 -55 to 125C Min. 1.0 1.0 1.0 1.0 5.0 5.0 2.0 2.0 1.0 65 45 1.0 Max. 10.0 11.0 11.6 12.6 ns Unit CL (pF) 15 50 15 50 tPLH tPHL tPHL tW tW ts Propagation Delay Time CLOCK to Q Propagation Delay Time CLEAR to Q CLR Pulse Width LOW CK Pulse Width HIGH or LOW Setup Time D to CLOCK, HIGH or LOW Hold Time D to CK, HIGH or LOW Removal Time CLR to CLOCK Maximum Clock Frequency Output to Output Skew time (note 1) 5.0(**) 5.0 (**) ns ns ns ns ns ns MHz ns 5.0(**) 5.0(**) 5.0(**) 5.0(**) 5.0(**) 5.0(**) 5.0 (**) th tREM fMAX tOSLH tOSHL 15 50 50 75 50 5.0(**) (*) Voltage range is 5.0V 0.5V Note 1: Parameter guaranteed by design. tsoLH = |tpLHm - tpLHn|, tsoHL = |tpHLm - tpHLn| 4/13 74VHCT273A Table 9: Capacitive Characteristics Test Condition Symbol Parameter TA = 25C Min. CIN CPD Input Capacitance Power Dissipation Capacitance (note 1) Typ. 6 16 Max. 10 Value -40 to 85C Min. Max. 10 -55 to 125C Min. Max. 10 pF pF Unit 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/8 (per Flip-Flop) Table 10: Dynamic Switching Characteristics Test Condition Symbol Parameter VCC (V) 5.0 TA = 25C Min. Typ. 0.6 -0.9 CL = 50 pF 2.0 -0.6 V Max. 0.9 Value -40 to 85C Min. Max. -55 to 125C Min. Max. Unit VOLP VOLV VIHD VILD Dynamic Low Voltage Quiet Output (note 1, 2) Dynamic High Voltage Input (note 1, 3) Dynamic Low Voltage Input (note 1, 3) 5.0 5.0 0.8 1) Worst case package. 2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.0V, (n-1) outputs switching and one output at GND. 3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.0V. Inputs under test switching: 3.0V to threshold (VILD), 0V to threshold (VIHD), f=1MHz. Figure 3: Test Circuit CL =15/50pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50) 5/13 74VHCT273A Figure 4: Waveform - Propagation Delays, Setup And Hold Times (f=1MHz; 50% duty cycle) Figure 5: Waveform - Propagation Delays (f=1MHz; 50% duty cycle) 6/13 74VHCT273A Figure 6: Waveform - Recovery Time (f=1MHz; 50% duty cycle) 7/13 74VHCT273A SO-20 MECHANICAL DATA DIM. A A1 B C D E e H h L k ddd 10.00 0.25 0.4 0 mm. MIN. 2.35 0.1 0.33 0.23 12.60 7.4 1.27 10.65 0.75 1.27 8 0.100 0.394 0.010 0.016 0 TYP MAX. 2.65 0.30 0.51 0.32 13.00 7.6 MIN. 0.093 0.004 0.013 0.009 0.496 0.291 0.050 0.419 0.030 0.050 8 0.004 inch TYP. MAX. 0.104 0.012 0.020 0.013 0.512 0.299 0016022D 8/13 74VHCT273A TSSOP20 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 6.4 6.2 4.3 6.5 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 6.6 6.6 4.48 0.002 0.031 0.007 0.004 0.252 0.244 0.169 0.256 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 0.0079 0.260 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0087225C 9/13 74VHCT273A Tape & Reel SO-20 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 10.8 13.2 3.1 3.9 11.9 12.8 20.2 60 30.4 11 13.4 3.3 4.1 12.1 0.425 0.520 0.122 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 1.197 0.433 0.528 0.130 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 10/13 74VHCT273A Tape & Reel TSSOP20 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.8 6.9 1.7 3.9 11.9 12.8 20.2 60 22.4 7 7.1 1.9 4.1 12.1 0.268 0.272 0.067 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.276 0.280 0.075 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 11/13 74VHCT273A Table 11: Revision History Date 16-Dec-2004 Revision 3 Description of Changes Order Codes Revision - pag. 1. 12/13 74VHCT273A 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 All other names are the property of their respective owners (c) 2004 STMicroelectronics - All Rights Reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 13/13 |
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