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74LVX74MSTN/a154avaiLow Voltage Dual D-Type Positive Edge-Triggered Flip-Flop


74LVX74M ,Low Voltage Dual D-Type Positive Edge-Triggered Flip-FlopAbsolute Maximum Ratings are those values beyond which damage to the device may occur. Functional o ..
74LVX74M ,Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flopapplications

74LVX74M
Low Voltage Dual D-Type Positive Edge-Triggered Flip-Flop
1/11July 2001 HIGH SPEED :
fMAX = 145MHz (TYP.) at VCC = 3.3V 5V TOLERANT INPUTS INPUT VOLTAGE LEVEL :IL =0.8V, VIH =2V AT VCC=3V LOW POWER DISSIPATION:CC = 2 μA (MAX.) at TA =25°C LOW NOISE:
VOLP = 0.3V (TYP .) at VCC = 3.3V SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS:PLH ≅ tPHL OPERATING VOLTAGE RANGE:
VCC(OPR) = 2V to 3.6V (1.2V Data Retention) PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 74 IMPROVED LATCH-UP IMMUNITY POWER DOWN PROTECTION ON INPUTS
DESCRIPTION

The 74LVX74 is a low voltage CMOS DUAL
D-TYPE FLIP-FLOP WITH PRESET AND CLEAR
NON INVERTING fabricated with sub-micron
silicon gate and double-layer metal wiring C2 MOS
technology. It is ideal for low power, battery
operated and low noise 3.3V applications.
A signal on the D INPUT is transferred to the Q
OUTPUT during the positive going transition of the
clock pulse. CLR and PR are independent of the
clock and accomplished by a low setting on the
appropriate input.
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
system. It combines high speed performance with
the true CMOS low power consumption. All inputs
and outputs are equipped with protection circuits
against static discharge, giving them 2KV ESD
immunity and transient excess voltage.
74LVX74

LOW VOLTAGE CMOS DUAL D-TYPE FLIP FLOP
WITH PRESET AND CLEAR (5V TOLERANT INPUTS)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
74LVX74
2/11
INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
TRUTH TABLE

X : Don’t Care
LOGIC DIAGRAM

This logic diagram has not be used to estimate propagation delays
74LVX74
3/11
ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
RECOMMENDED OPERATING CONDITIONS

1) Truth Table guaranteed: 1.2V to 3.6V
2) VIN from 0.8V to 2.0V
DC SPECIFICATIONS
74LVX74
4/11
DYNAMIC SWITCHING CHARACTERISTICS

1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.3V. Inputs under test switching: 3.3V to threshold (VILD), 0V to threshold
(VIHD), f=1MHz.
74LVX74
5/11
AC ELECTRICAL CHARACTERISTICS (Input t
r = tf = 3ns)
1) Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switch-
ing in the same direction, either HIGH or LOW
2) Parameter guaranteed by design
(*) Voltage range is 3.3V ± 0.3V
CAPACITIVE CHARACTERISTICS

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/2 (per circuit)
74LVX74
6/11
TEST CIRCUIT

CL =15/50pF 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)
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