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IDT74FCT2374AT

FAST CMOS OCTAL D REGISTER (3-STATE)

Integrated Device Technology 

IDT74FCT2374AT/CT

FAST CMOS OCTAL D REGISTER (3-STATE)

INDUSTRIAL TEMPERATURE RANGE

POWER SUPPLY CHARACTERISTICS

Symbol

Parameter

Test Conditions(1)

Min. Typ.(2) Max.

ΔICC

Quiescent Power Supply Current

TTL Inputs HIGH

VCC = Max.

VIN = 3.4V(3)

—

0.5

2

ICCD

Dynamic Power Supply

Current(4)

VCC = Max.

Outputs Open

OE = GND

VIN = VCC

VIN = GND

—

0.06

0.12

IC

Total Power Supply Current(6)

One Input Toggling

50% Duty Cycle

VCC = Max.

Outputs Open

fCP = 10MHz

VIN = VCC

VIN = GND

—

0.6

2.2

50% Duty Cycle

OE = GND

fi = 5MHz

50% Duty Cycle

VIN = 3.4V

VIN = GND

—

1.1

4.2

One BitToggling

VCC = Max.

Outputs Open

fCP = 10MHz

VIN = VCC

VIN = GND

—

1.5

4(5)

50% Duty Cycle

OE = GND

Eight Bits Toggling

fi = 2.5MHz

VIN = 3.4V

VIN = GND

—

3.8

13(5)

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 ΔICC formula. These limits are guaranteed but not tested.

6. IC = IQUIESCENT + IINPUTS + IDYNAMIC

IC = ICC + ΔICC DHNT + ICCD (fCP/2+ fiNi)

ICC = Quiescent Current

ΔICC = 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.

Unit

mA

mA/

MHz

mA

4

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