74FCT244P datasheet(4/7 Pages) IDT

部品番号	74FCT244P

部品情報	FAST CMOS OCTAL D FLIP-FLOP WITH MASTER RESET

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MILITARYANDINDUSTRIALTEMPERATURERANGES

4

IDT54/74FCT273T/AT/CT

FASTCMOSOCTALDFLIP-FLOPWITHMASTERRESET

Symbol

Parameter

Test Conditions(1)

Min.

Typ.(2)

Max.

Unit

∆ICC

Quiescent Power Supply Current

VCC = Max.

—

0.5

2

mA

TTL Inputs HIGH

VIN = 3.4V(3)

ICCD

Dynamic Power Supply

VCC = Max.

VIN = VCC

—

0.15

0.25

mA/

Current(4)

Outputs Open

VIN = GND

MHz

MR = VCC

One Input Toggling

50% Duty Cycle

IC

Total Power Supply Current(6)

VCC = Max.

VIN = VCC

—

1.5

3.5

mA

Outputs Open

VIN = GND

fCP = 10MHz

50% Duty Cycle

MR = VCC

VIN = 3.4V

—

2

5.5

One Bit Toggling

VIN = GND

fi = 5MHz

50% Duty Cycle

VCC = Max.

VIN = VCC

—

3.8

7.3(5)

Outputs Open

VIN = GND

fCP = 10MHz

50% Duty Cycle

MR = VCC

VIN = 3.4V

—

6

16.3(5)

Eight Bits Toggling

VIN = GND

fi = 2.5MHz

50% Duty Cycle

NOTES:

1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.

2. Typical values are at VCC = 5.0V, +25°C ambient.

3. Per TTL driven input; (VIN = 3.4V). All other inputs at VCC or GND.

4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.

5. Values for these conditions are examples of

∆ICC formula. These limits are guaranteed but not tested.

6. IC = IQUIESCENT + IINPUTS + IDYNAMIC

IC = ICC +

∆ICC DHNT + ICCD (fCP/2+ fiNi)

ICC = Quiescent Current

∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)

DH = Duty Cycle for TTL Inputs High

NT = Number of TTL Inputs at DH

ICCD = Dynamic Current caused by an Input Transition Pair (HLH or LHL)

fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

fi = Output Frequency

Ni = Number of Outputs at fi

All currents are in milliamps and all frequencies are in megahertz.

POWER SUPPLY CHARACTERISTICS

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