IDT74FCT823AT_06 datasheet(4/7 Pages) IDT

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INDUSTRIALTEMPERATURERANGE

IDT74FCT823AT/CT

HIGH-PERFORMANCECMOSBUSINTERFACEREGISTER

Symbol

Parameter

Test Conditions(1)

Min.

Typ.(2)

Max.

Unit

ΔICC

Quiescent Power Supply Current

VCC = Max.

—

0.5

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

OE = EN = GND

One Input Toggling

50% Duty Cycle

Total Power Supply Current(6)

VCC = Max.

VIN = VCC

—

1.5

3.5

Outputs Open

VIN = GND

fCP = 10MHz

50% Duty Cycle

OE = EN = GND

VIN = 3.4V

—

5.5

One Bit Toggling

VIN = GND

at fi = 5MHz

VCC = Max.

VIN = VCC

—

3.8

7.3(5)

Outputs Open

VIN = GND

fCP = 10MHz

50% Duty Cycle

OE = EN = GND

VIN = 3.4V

—

16.3(5)

Eight Bits Toggling

VIN = GND

at fi = 2.5MHz

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.

POWER SUPPLY CHARACTERISTICS

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