IDT74FCT299CSOB datasheet(4/7 Pages) IDT

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IDT54/74FCT299/A/C

FAST CMOS 8-INPUT UNIVERSAL SHIFT REGISTER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

7.11

POWER SUPPLY CHARACTERISTICS

VLC = 0.2V; VHC = VCC – 0.2V

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

Unit

ICC

Quiescent Power Supply

Vcc = Max.

—

0.2

1.5

Current

VIN

≥ VHC; VIN ≤ VLC

∆ICC

Quiescent Power Supply

Vcc = Max.

—

0.5

2.0

Current TTL Inputs HIGH

VIN = 3.4V

(3)

ICCD

Dynamic Power Supply

Vcc = Max.

VIN

≥ VHC

—

0.15

0.25

mA/MHz

Current

(4)

Outputs Open

VIN

≤ VLC

OE1 = OE2 = GND

MR = VCC

S0 = S1 = VCC

DS0 = DS1 = GND

One Input Toggling

50% Duty Cycle

Total Power Supply

Vcc = Max.

VIN

≥ VHC

—

1.7

4.0

Current

(6)

Outputs Open

VIN

≤ VLC

fCP = 10MHz

(FCT)

50% Duty Cycle

OE1 = OE2 = GND

MR = VCC

S0 = S1 = VCC

DS0 = DS7 = GND

VIN = 3.4V

—

2.2

6.0

One Bit Toggling

VIN = GND

at fi = 5MHz

50% Duty Cycle

Vcc = Max.

VIN

≥ VHC

—

4.0

7.8

(5)

Outputs Open

VIN

≤ VLC

fCP = 10MHz

(FCT)

50% Duty Cycle

OE1 = OE2 = GND

MR = VCC

S0 = S1 = VCC

DS0 = DS7 = GND

VIN = 3.4V

—

6.2

16.8

(5)

Eight Bits Toggling

VIN = GND

at fi = 2.5MHz

50% Duty Cycle

NOTES:

2561 tbl 06

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 (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 Output Transition Pair (HLH or LHL)

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

fi = Input Frequency

Ni = Number of Inputs at fi

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

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