IDT74FCT162240CTPFB datasheet(5/8 Pages) IDT

5 / 8 page

IDT54/74FCT16240T/AT/CT/ET,162240T/AT/CT/ET

FAST CMOS 16-BIT BUFFER/LINE DRIVER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

5.1

POWER SUPPLY CHARACTERISTICS

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 (fCPNCP/2 + fiNi)

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)

fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)

NCP = Number of Clock Inputs at fCP

fi = Input Frequency

Ni = Number of Inputs at fi

2541 tbl 08

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

1.5

ICCD

Dynamic Power Supply

Current(4)

VCC = Max.

Outputs Open

OE = GND

One Input Toggling

50% Duty Cycle

VIN = VCC

VIN = GND

—

100

µA/

MHz

Total Power Supply Current(6)

VCC = Max.

Outputs Open

fi = 10MHz

VIN = VCC

VIN = GND

—

0.6

1.5

50% Duty Cycle

OE = GND

One Bit Toggling

VIN = 3.4V

VIN = GND

—

0.9

2.3

VCC = Max.

Outputs Open

fi = 2.5MHz

VIN = VCC

VIN = GND

—

2.4

4.5(5)

50% Duty Cycle

OE = GND

Sixteen Bits Toggling

VIN = 3.4V

VIN = GND

—

6.4

16.5(5)

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