74VHC374 OCTAL D-TYPE FLIP FLOP WITH 3 STATE OUTPUT NON INVERTING ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ HIGH SPEED: fMAX = 270 MHz (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 4 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 374 IMPROVED LATCH-UP IMMUNITY LOW NOISE VOLP = 0.9V (Max.) DESCRIPTION The 74VHC374 is an advanced high-speed CMOS OCTAL D-TYPE FLIP FLOP with 3 STATE OUTPUT NON INVERTING fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. This 8 bit D-Type flip-flop is controlled by a clock input (CK) and an output enable input (OE). On the positive transition of the clock, the Q outputs will be set to the logic state that were M (Micro Package) T (TSSOP Package) ORDER CODES : 74VHC374M 74VHC374T setup at the D inputs. While the (OE) input is low, the 8 outputs will be in a normal logic state (high or low logic level) and while high level the outputs will be in a high impedance state. The output control does not affect the internal operation of flip flops; that is, the old data can be retained or the new data can be entered even while the outputs are off. 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 74VHC374 INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No SYMBOL 1 OE NAME AND FUNCT ION 2, 5, 6, 9, 12, 15, 16, 19 Q0 to Q7 3 State Outputs 3, 4, 7, 8, 13, 14, 17, 18 D0 to D7 Data Inputs 11 CLOCK Clock Input (LOW to HIGH, edge triggered) 10 GND Ground (0V) 20 VCC Positive Supply Voltage 3 State Output Enable Input (Active LOW) TRUTH TABLE INPUTS CK D H X X Z X NO CHANGE L Q L L L L H H X:Don’t care Z: High impedance LOGIC DIAGRAM 2/10 OUT PUTS OE 74VHC374 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 ± 75 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 VI Input Voltage VO Output Voltage Top Operating Temperature dt/dv Valu e Supply Voltage Unit 2.0 to 5.5 V 0 to 5.5 V 0 to VCC 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 IOZ 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 High Impedance Output Leakage Current Input Leakage Current Quiescent Supply Current V I O =-50 µA IO=-50 µA 1.9 2.0 1.9 3.0 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 I O=50 µA 0.0 0.1 0.1 3.0 IO=50 µA 0.0 0.1 0.1 4.5 IO=50 µA 0.0 0.1 0.1 2.0 V V 2.48 3.8 V 3.0 IO=4 mA 0.36 0.44 4.5 IO=8 mA 0.36 0.44 VI = VIH or VIL VO = VCC or GND ±0.25 ±2.5 µA 5.5 0 to 5.5 VI = 5.5V or GND ±0.1 ±1.0 µA 5.5 VI = VCC or GND 4 40 µA 3/10 74VHC374 AC ELECTRICAL CHARACTERISTICS (Input t r = tf =3 ns) Symb ol Parameter 3.3(*) 15 Value T A = 25 o C Min. Typ . Max. 8.1 12.7 3.3(*) 5.0(**) 5.0(**) 3.3(*) 3.3(*) 50 15 50 15 50 R L = 1KΩ R L = 1KΩ 10.6 5.4 6.9 7.1 9.6 16.2 8.1 10.1 11.0 14.5 1.0 1.0 1.0 1.0 1.0 18.5 9.5 11.5 13.0 16.5 5.0 5.0(**) (**) 15 50 R L = 1KΩ R L = 1KΩ 5.1 6.6 7.6 9.6 1.0 1.0 9.0 11.0 (*) 50 50 R L = 1KΩ R L = 1KΩ 10.2 6.1 14.0 8.8 5.0 5.0 1.0 1.0 16.0 10.0 5.5 5.0 V CC (V) tPLH tPHL Propagation Delay Time CK to Q tPZL tPZH Output EnableTime tPLZ tPHZ Output Disable Time Test Co ndition CL (pF ) 3.3 5.0(**) 3.3(*) 5.0(**) Un it -40 to 85 o C Min . Max. 1.0 15.0 tw Clock Pulse Width HIGH or LOW ts Setup Time D to CK HIGH or LOW 3.3(*) 4.5 4.5 5.0(**) 3.0 3.0 Hold Time D to CK HIGH or LOW 3.3(*) 5.0(**) 2.0 2.0 2.0 2.0 fMAX Maximum Clock Frequency 3.3 5.0(**) tOSLH tOSHL Output to Output Skew Time (note 1) 3.3(*) 5.0(**) th (*) 60 100 250 270 60 100 50 1.5 1.0 50 ns ns ns ns ns ns MHz 1.5 1.0 ns (*) Voltage range is 3.3V ± 0.3V (**) Voltage range is 5V ± 0.5V Note 1: Parameter guaranteed by design. tsoLH = |tpLHm- tpLHn|, tsoHL = |tpHLm - tpHLn| CAPACITIVE CHARACTERISTICS Symb ol Parameter T est Cond ition s Value T A = 25 o C Min. Un it -40 to 85 o C Typ . Max. Input Capacitance 4 10 COUT Output Capacitance 6 pF CPD Power Dissipation Capacitance (note 1) 32 pF C IN Min . Max. 10 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 operating current can be obtained by the following equation. ICC(opr) = CPD • VCC • fIN + ICC/8 (per Flip-Flop) 4/10 74VHC374 DYNAMIC SWITCHING CHARACTERISTICS Symb ol Parameter T est Cond ition s Dynamic Low Voltage Quiet Output (note 1, 2) 5.0 VIHD Dynamic High Voltage Input (note 1, 3) 5.0 VILD Dynamic Low Voltage Input (note 1, 3) 5.0 VOLP VOLV Value T A = 25 o C V CC (V) Min. -0.9 C L = 50 pF Un it -40 to 85 o C Typ . Max. 0.6 0.9 Min . Max. -0.6 3.5 V 1.5 1) Worst case package. 2) Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n -1) outputs switching and one output at GND. 3) Max number of data inputs (n) switching. (n-1) switching 0V to5.0V. Inputs under test switching: 5.0V to threshold (VILD), 0V to threshold (VIHD), f=1MHz. TEST CIRCUIT T EST tPLH , tPHL SW IT CH Open tPZL , tPLZ VCC tPZH , tPHZ GND CL = 15/50 pF or equivalent (includes jig and probe capacitance) RL = R1 = 1KΩ orequivalent RT = ZOUT of pulse generator (typically 50Ω) 5/10 74VHC374 WAVEFORM 1: PROPAGATION DELAYS, SETUP AND HOLD TIMES (f=1MHz; 50% duty cycle) 6/10 74VHC374 WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIMES (f=1MHz; 50% duty cycle) WAVEFORM 3: PULSE WIDTH 7/10 74VHC374 SO-20 MECHANICAL DATA mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 2.65 0.10 0.104 0.20 a2 MAX. 0.004 0.007 2.45 0.096 b 0.35 0.49 0.013 0.019 b1 0.23 0.32 0.009 0.012 C 0.50 0.020 c1 45 (typ.) D 12.60 13.00 0.496 0.512 E 10.00 10.65 0.393 0.419 e 1.27 0.050 e3 11.43 0.450 F 7.40 7.60 0.291 0.299 L 0.50 1.27 0.19 0.050 M S 0.75 0.029 8 (max.) P013L 8/10 74VHC374 TSSOP20 MECHANICAL DATA mm DIM. MIN. inch TYP. MAX. A 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 0.2 0.0035 0.0079 D 6.4 6.5 6.6 0.252 0.256 0.260 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 K e L E c D E1 PIN 1 IDENTIFICATION 1 9/10 74VHC374 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. 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