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IDT49FCT3805B

3.3V CMOS BUFFER/CLOCK DRIVER

Integrated Device Technology 

IDT49FCT3805B

3.3V CMOS BUFFER/CLOCK DRIVER

COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGE

POWER SUPPLY CHARACTERISTICS

Symbol

Parameter

Test Conditions(1)

∆ICC

Quiescent Power Supply Current

VCC = Max.

TTL Inputs HIGH

VIN = VCC –0.6V(3)

ICCD

Dynamic Power Supply Current(4)

VCC = Max.

VIN = VCC

Outputs Open

VIN = GND

OEA = OEB = GND

Per Output Toggling

50% Duty Cycle

IC

Total Power Supply Current(6)

VCC = Max.

VIN = VCC

Outputs Open

VIN = GND

fO = 25MHz

50% Duty Cycle

VIN = VCC –0.6V

OEA = OEB = VCC

VIN = GND

Mon. Output Toggling

VCC = Max.

VIN = VCC

Outputs Open

VIN = GND

fO = 50MHz

50% Duty Cycle

VIN = VCC –0.6V

OEA = OEB = GND

VIN = GND

Eleven Outputs Toggling

Min.

Typ.(2)

—

10

—

0.035

—

0.9

—

0.9

—

20

—

20

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 = 3.3V, +25°C ambient.

3. Per TTL driven input (VIN = VCC -0.6V); 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 IC 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 = VCC -0.6V)

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.

Max.

Unit

30

µA

0.06 mA/MHz

1.6

1.6

33(5)

mA

33(5)

4

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