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74LVX74 Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flop
May 1993 Revised March 1999
74LVX74 Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flop
General Description
The LVX74 is a dual D-type flip-flop with Asynchronous Clear and Set inputs and complementary (Q, Q) outputs. Information at the input is transferred to the outputs on the positive edge of the clock pulse. After the Clock Pulse input threshold voltage has been passed, the Data input is locked out and information present will not be transferred to the outputs until the next rising edge of the Clock Pulse input. Asynchronous Inputs: LOW input to SD (Set) sets Q to HIGH level LOW input to CD (Clear) sets Q to LOW level Clear and Set are independent of clock Simultaneous LOW on CD and SD makes both Q and Q HIGH
Features
s Input voltage level translation from 5V to 3V s Ideal for low power/low noise 3.3V applications s Guaranteed simultaneous switching noise level and dynamic threshold performance
Ordering Code:
Order Number 74LVX74M 74LVX74SJ 74LVX74MTC Package Number M14A M14D MTC14 Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150" Narrow 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending suffix letter "X" to the ordering code.
Connection Diagram
Pin Descriptions
Pin Names D1 , D2 CP1, CP2 CD1, CD2 SD1, SD2 Q1, Q1, Q2, Q2 Description Data Inputs Clock Pulse Inputs Direct Clear Inputs Direct Set Inputs Outputs
(c) 1999 Fairchild Semiconductor Corporation
DS011606.prf
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74LVX74
Logic Symbols
IEEE/IEC
Truth Table
(Each Half) Inputs SD L H L H H H CD H L L H H H CP X X D X X X H L X Q H L H H L Q0 Outputs Q L H H L H Q0

L
X
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial = LOW-to-HIGH Clock Transition Q0(Q0) = Previous Q(Q) before LOW-to-HIGH Transition of Clock
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74LVX74
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) DC Input Diode Current (IIK) VI = -0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = -0.5V VO = VCC +0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current (ICC or IGND) Storage Temperature (TSTG) Power Dissipation 50 mA -65C to +150C 180 mW 25 mA -20 mA +20 mA -0.5V to VCC + 0.5V -20 mA -0.5V to 7V -0.5V to +7.0V
Recommended Operating Conditions (Note 2)
Supply Voltage (VCC) Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) Input Rise and Fall Time (t/V) 2.0V to 3.6V 0V to 5.5V 0V to VCC -40C to +85C 0 ns/V to 100 ns/V
Note 1: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 2: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol VIH Parameter HIGH Level Input Voltage VIL LOW Level Input Voltage VOH HIGH Level Output Voltage VOL LOW Level Output Voltage IIN ICC Input Leakage Current Quiescent Supply Current VCC 2.0 3.0 3.6 2.0 3.0 3.6 2.0 3.0 3.0 2.0 3.0 3.0 3.6 3.6 1.9 2.9 2.58 0.0 0.0 0.1 0.1 0.36 0.1 2.0 2.0 3.0 TA = +25C Min 1.5 2.0 2.4 0.5 0.8 0.8 1.9 2.9 2.48 0.1 0.1 0.44 1.0 20.0 A A V VIN = VIL or VIH V Typ Max TA = -40C to +85C Min 1.5 2.0 2.4 0.5 0.8 0.8 VIN = VIL or VIH IOH = -50 A IOH = -50 A IOH = -4 mA IOL = 50 A IOL = 50 A IOL = 4 mA VIN = 5.5V or GND VIN = VCC or GND V V Max Units Conditions
Noise Characteristics (Note 3)
Symbol VOLP VOLV VIHD VILD Parameter Quiet Output Maximum Dynamic VOL Quiet Output Minimum Dynamic VOL Minimum High Level Dynamic Input Voltage Maximum Low Level Dynamic Input Voltage VCC (V) 3.3 3.3 3.3 3.3 TA = 25C Typ 0.3 -0.3 Limit 0.5 -0.5 2.0 0.8 Units V V V V CL (pF) 50 50 50 50
Note 3: Input tr = tf = 3 ns
3
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74LVX74
AC Electrical Characteristics
Symbol tPLH tPHL Parameter Propagation Delay CPn to Qn or Qn 3.3 0.3 tPLH tPHL Propagation Delay CDn to SDn to Qn or Qn 3.3 0.3 tW tS tH tREC fMAX CPn or CDn or SDn Pulse Width Setup Time Dn to CPn Hold Time Dn to CPn Recovery Time CPn or SDn to CPn Maximum Clock Frequency 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 tOSLH tOSHL Output to Output Skew (Note 4) 2.7 3.3 8.5 6 8.0 5.5 0.5 0.5 6.5 5.0 55 45 95 60 135 60 145 85 1.5 1.5 2.7 VCC (V) 2.7 TA = +25C Min Typ 7.3 9.8 5.7 8.2 8.4 10.9 6.6 9.1 Max 15 18.5 9.7 13.2 15.6 19.1 10.1 13.6 TA = -40C to +85C Min 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 10 7 9.5 6.5 0.5 0.5 7.5 5.0 50 40 80 50 1.5 1.5 ns MHz Max 18.5 22 11.5 15 18.5 22 12 15.5 ns ns ns ns 15 50 15 50 50 ns ns Units CL (pF) 15 50 15 50 15 50 15 50
Note 4: Parameter guaranteed by design. tOSLH = |tPLHm-tPLHn|, tOSLH = |tPHLm-tPHLn|
Capacitance
Symbol CIN CPD Input Capacitance Power Dissipation Capacitance (Note 5)
Note 5: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load.
Parameter
TA = +25C Min Typ 4 25 Max 10
TA = -40C to +85C Min Max 10
Units pF pF
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74LVX74
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150" Narrow Package Number M14A
14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M14D
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74LVX74 Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flop
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC14
LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the www.fairchildsemi.com user.
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.

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