IDT74FCT810CTEB datasheet(3/6 Pages) IDT

3 / 6 page

IDT54/74FCT810BT/CT

FAST CMOS BUFFER/CLOCK DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

9.4

POWER SUPPLY CHARACTERISTICS

3103 tbl 05

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 (fONO)

ICC = Quiescent Current (ICCL, ICCH and ICCZ)

∆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)

fO= Output Frequency

NO= Number of Outputs at fO

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

Symbol

Parameter

Test Conditions(1)

Min.

Typ.(2)

Max.

Unit

∆ICC

Quiescent Power Supply Current

TTL Inputs HIGH

VCC = Max.

VIN = 3.4V(3)

—

0.5

2.0

ICCD

Dynamic Power Supply Current(4)

VCC = Max.

Outputs Open

OEA = OEB = GND

50% Duty Cycle

VIN = VCC

VIN = GND

—

100

µA/

MHz/bit

Total Power Supply Current(6)

VCC = Max.

Outputs Open

fo= 25MHz

VIN = VCC

VIN = GND

—

7.5

50% Duty Cycle

OEA = GND, OEB =VCC

VIN = 3.4V

VIN = GND

—

7.8

14.0

VCC = Max.

Outputs Open

fo = 50MHz

VIN = VCC

VIN = GND

—

30.0

50.5(5)

50% Duty Cycle

OEA = OEB = GND

VIN = 3.4V

VIN = GND

—

30.5

52.5(5)

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