IDT74FCT541AD datasheet(4/7 Pages) IDT

Part #	IDT74FCT541AD

Description	BUFFER/LINE DRIVER

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Manufacturer	IDT [Integrated Device Technology]

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4

IDT54/74FCT541/A/C

FASTCMOSOCTALBUFFER/LINEDRIVER

Symbol

Parameter

Test Conditions(1)

Min.

Typ.(2)

Max.

Unit

ICC

Quiescent Power Supply Current

VCC = Max.

—

0.2

1.5

mA

VIN

≥ VHC; VIN ≤ VLC

∆ICC

Quiescent Power Supply Current

VCC = Max.

—

0.5

2

mA

TTL Inputs HIGH

VIN = 3.4V(3)

ICCD

Dynamic Power Supply

VCC = Max.

VIN

≥ VHC

—

0.15

0.25

mA/

Current(4)

Outputs Open

VIN

≤ VLC

MHz

OEA

= OEB = GND or

OEA = GND

One Input Toggling

50% Duty Cycle

IC

Total Power Supply Current(6)

VCC = Max.

VIN

≥ VHC

—

1.7

4

mA

Outputs Open

VIN

≤ VLC

fi = 10MHz

(FCT)

50% Duty Cycle

OEA

= OEB = GND or

VIN = 3.4V

—

2

5

OEA = GND

VIN = GND

One Bit Toggling

VCC = Max.

VIN

≥ VHC

—

3.2

6.5(5)

Outputs Open

VIN

≤ VLC

fi = 2.5MHz

(FCT)

50% Duty Cycle

OEA

= OEB = GND or

VIN = 3.4V

—

5.2

14.5(5)

OEA = GND

VIN = GND

Eight Bits Toggling

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

∆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 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

VLC = 0.2V; VHC = VCC - 0.2V

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