74VHC74 DUAL D-TYPE FLIP FLOP WITH PRESET AND CLEAR ■ ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: fMAX =170 MHz (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 2 µA (MAX.) at TA = 25 oC HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.) POWER DOWN PROTECTION ON INPUTS SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 5.5V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 74 IMPROVED LATCH-UP IMMUNITY DESCRIPTION The 74VHC74 is an advanced high-speed CMOS DUAL D-TYPE FLIP FLOP WITH PRESET AND CLEAR fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. A signal on the D INPUT is transfered to the Q OUTPUT during the positive going transition of the clock pulse. M (Micro Package) T (TSSOP Package) ORDER CODES : 74VHC74M 74VHC74T CLEAR and PRESET are independent of the clock and accomplished by a low setting on the appropriate input. It is ideal for low power applications maintaining high speed operation similar to equivalent Bipolar Schottky TTL. Power down protection is provided on all inputs 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. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS June 1999 1/10 74VHC74 INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL 1, 13 1CLR, 2CLR Asyncronous Reset Direct Input NAME AND FUNCT ION 2, 12 1D, 2D Data Input 3, 11 1CK, 2CK Clock Input (LOW-to-HIGH, EdgeTriggered) 4, 10 1PR, 2PR Asyncronous Set - Direct Input 5, 9 1Q, 2Q True Flip-Flop Outputs 6, 8 1Q, 2Q Complement Flip-Flop Outputs 7 GND Ground (0V) 14 VCC Positive Supply Voltage TRUTH TABLE INPUTS OUT PUT S CLR PR D CK L H X H L X Q X L H CLEAR X H L PRESET X H H L H L L X H H L H H H H L H H X Qn Qn X:Don’t Care LOGIC DIAGRAMS Thislogic diagram has notbe used to estimate propagation delays 2/10 F UNCTION Q NO CHANGE 74VHC74 ABSOLUTE MAXIMUM RATINGS Symbol VCC Parameter Value Unit -0.5 to +7.0 V -0.5 to +7.0 V -0.5 to VCC + 0.5 V Supply Voltage VI DC Input Voltage VO DC Output Voltage IIK DC Input Diode Current - 20 mA IOK DC Output Diode Current ± 20 mA IO DC Output Current ± 25 mA ± 50 mA ICC or IGND DC VCC or Ground Current Tstg Storage Temperature TL Lead Temperature (10 sec) -65 to +150 o 300 o C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. RECOMMENDED OPERATING CONDITIONS Symbol VCC Parameter Supply Voltage Valu e Unit 2.0 to 5.5 V V VI Input Voltage 0 to 5.5 VO Output Voltage 0 to VCC Top dt/dv Operating Temperature V o -40 to +85 Input Rise and Fall Time (see note 1) (VCC = 3.3 ± 0.3V) (V CC = 5.0 ± 0.5V) C 0 to 100 0 to 20 ns/V ns/V 1) VIN from 30% to70%of VCC DC SPECIFICATIONS Symb ol VIH VIL VOH VOL II ICC Parameter T est Cond ition s Value o Min. Typ . Un it o T A = 25 C V CC (V) -40 to 85 C Max. Min . Max. High Level Input Voltage 2.0 1.5 1.5 3.0 to 5.5 0.7VCC 0.7VCC Low Level Input Voltage 2.0 0.5 0.5 3.0 to 5.5 0.3VCC 0.3VCC High Level Output Voltage Low Level Output Voltage Input Leakage Current Quiescent Supply Current V 2.0 IO=-50 µA 1.9 2.0 1.9 3.0 IO=-50 µA 2.9 3.0 2.9 4.5 IO=-50 µA 4.4 4.5 4.4 3.0 IO=-4 mA 2.58 4.5 IO=-8 mA 3.94 2.0 IO=50 µA 0.0 0.1 0.1 3.0 IO=50 µA 0.0 0.1 0.1 4.5 0.0 0.1 0.1 0.36 0.44 V V 2.48 3.8 V 3.0 IO=50 µA IO=4 mA 4.5 IO=8 mA 0.36 0.44 0 to 5.5 VI = 5.5V or GND ±0.1 ±1.0 µA 5.5 VI = VCC or GND 2 20 µA 3/10 74VHC74 AC ELECTRICAL CHARACTERISTICS (Input t r = tf =3 ns) Symb ol Parameter 3.3(*) 3.3(*) 15 50 Value T A = 25 o C Min. Typ . Max. 6.7 11.9 9.2 15.4 5.0(**) 5.0(**) 3.3(*) 3.3(*) 5.0(**) 5.0(**) 3.3(*) 15 50 15 50 15 50 4.6 6.1 7.6 10.1 4.8 6.3 V CC (V) tPLH tPHL tPLH tPHL tw Propagation Delay Time CK to Q or Q Propagation Delay Time PR or CLR to Q or Q Test Co ndition CL (pF ) 7.3 9.3 12.3 15.8 7.7 9.7 6.0 Un it -40 to Min . 1.0 1.0 85 o C Max. 14.0 17.5 1.0 1.0 1.0 1.0 1.0 1.0 8.5 10.5 14.5 18.0 9.0 11.0 7.0 ns ns CK Pulse Width HIGH or LOW 5.0 (**) 5.0 5.0 tw PR or CLR Pulse Width LOW 3.3(*) 5.0(**) 6.0 5.0 7.0 5.0 ns ts Setup Time D to CK HIGH or LOW 3.3 5.0(**) (*) 6.0 5.0 7.0 5.0 ns th Hold Time D to CK HIGH or LOW 3.3(*) 5.0(**) 0.5 0.5 0.5 0.5 ns Removal Time CLR or PR to CK 3.3(*) 5.0 5.0 (**) 3.0 3.0 tREM fMAX Maximum Clock Frequency 5.0 3.3(*) 3.3(*) 5.0(**) 5.0(**) 15 50 15 50 80 50 130 90 125 75 170 115 70 45 110 75 ns ns MHz (*) Voltage range is 3.3V ± 0.3V (**) Voltage range is 5V ± 0.5V CAPACITIVE CHARACTERISTICS Symb ol Parameter Test Co nditions C IN Input Capacitance 3.3 CPD Power Dissipation Capacitance (note 1) 3.3 Valu e o Un it o -40 to 85 C T A = 25 C Min. T yp. Max. Min. Max. V CC (V) 4 fIN = 10 MHz 25 10 10 pF pF 1) CPD isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto Test Circuit).Average operting current can be obtained by the following equation. ICC(opr) = CPD • VCC • fIN + ICC/2(per Flip-Fliop) 4/10 74VHC74 TEST CIRCUIT CL = 15/50 pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) WAVEFORM 1: PROPAGATION DELAYS, SETUP AND HOLD TIMES (f=1MHz; 50% duty cycle) 5/10 74VHC74 WAVEFORM 2: PROPAGATION DELAYS (f=1MHz; 50% duty cycle) 6/10 74VHC74 WAVEFORM 3: RECOVERY TIMES (f=1MHz; 50% duty cycle) WAVEFORM 3: PULSE WIDTH 7/10 74VHC74 SO-14 MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 1.75 0.1 0.068 0.2 a2 MAX. 0.003 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 8.55 8.75 0.336 0.344 E 5.8 6.2 0.228 0.244 e 1.27 e3 0.050 7.62 0.300 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 0.68 0.026 8 (max.) P013G 8/10 74VHC74 TSSOP14 MECHANICAL DATA mm DIM. MIN. inch TYP. A MAX. MIN. TYP. MAX. 1.1 0.433 A1 0.05 0.10 0.15 0.002 0.004 0.006 A2 0.85 0.9 0.95 0.335 0.354 0.374 b 0.19 0.30 0.0075 0.0118 c 0.09 0.20 0.0035 0.0079 D 4.9 5 5.1 0.193 0.197 0.201 E 6.25 6.4 6.5 0.246 0.252 0.256 E1 4.3 4.4 4.48 0.169 0.173 0.176 e 0.65 BSC 0.0256 BSC K 0o 4o 8o 0o 4o 8o L 0.50 0.60 0.70 0.020 0.024 0.028 A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 9/10 74VHC74 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. Specification 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 trademark of STMicroelectronics 1999 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Mexico - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. http://www.st.com . 10/10