IDT74FCT574EB datasheet(4/7 Pages) IDT

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MILITARYANDCOMMERCIALTEMPERATURERANGES

IDT54/74FCT574/A/C

FAST CMOS OCTAL D REGISTER (3-STATE)

NOTES:

1. For conditions shown as Max. or Min., 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 the 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 Output Transition Pair (HLH or LHL)

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

fi = Input Frequency

Ni = Number of Inputs at fi

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

POWER SUPPLY CHARACTERISTICS

VLC = 0.2V; VHC = VCC - 0.2V

Symbol

Parameter

Test Conditions(1)

Min.

Typ.(2)

Max.

Unit

ICC

Quiescent Power Supply Current

VCC = Max.

VIN

≥ VHC; VIN ≤ VLC

—0.2

1.5

∆ICC

Quiescent Power Supply Current

TTL Inputs HIGH

VCC = Max.

VIN = 3.4V(3)

—0.5

ICCD

Dynamic Power Supply

Current(4)

VCC = Max.

Outputs Open

OE = GND

One Input Toggling

50% Duty Cycle

VIN

≥ VHC

VIN

≤ VLC

—

0.15

0.25

mA/

MHz

Total Power Supply Current(6)

VCC = Max.

Outputs Open

fCP = 10MHz

50% Duty Cycle

VIN

≥ VHC

VIN

≤ VLC

(FCT)

—1.7

OE = GND

fi = 5MHz

50% Duty Cycle

One Bit Toggling

VIN = 3.4V

VIN = GND

—2.2

VCC = Max.

Outputs Open

fCP = 10MHz

50% Duty Cycle

VIN

≥ VHC

VIN

≤ VLC

(FCT)

—4

7.8(5)

OE = GND

Eight Bits Toggling

fi = 2.5MHz

50% Duty Cycle

VIN = 3.4V

VIN = GND

—

6.2

16.8(5)

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