IDT54FCT377CTSO datasheet(4/7 Pages) IDT

Part #	IDT54FCT377CTSO

Description	FAST CMOS OCTAL D FLIP-FLOP WITH CLOCK ENABLE

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Manufacturer	IDT [Integrated Device Technology]

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6.14

4

IDT54/74FCT377T/AT/CT/DT

FAST CMOS OCTAL D FLIP-FLOP WITH CLOCK ENABLE

MILITARY AND COMMERCIAL TEMPERATURE RANGES

POWER SUPPLY CHARACTERISTICS

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

Unit

∆ICC

Quiescent Power Supply

VCC = Max.

—

0.5

2.0

mA

Current TTL Inputs HIGH

VIN = 3.4V

(3)

ICCD

Dynamic Power Supply

VCC = Max., Outputs Open

VIN = VCC

—

0.15

0.25

mA/

Current

(4)

CE = GND

VIN = GND

MHz

One Input Toggling

50% Duty Cycle

IC

Total Power Supply

VCC = Max., Outputs Open

VIN = VCC

—

1.5

3.5

mA

Current

(6)

fCP = 10MHz

VIN = GND

CE = GND

VIN = 3.4V

—

2.0

5.5

One Bit Toggling

VIN = GND

fi = 5MHz

50% Duty Cycle

VCC = Max., Outputs Open

VIN = VCC

—

3.8

7.3

(5)

fCP = 10MHz, 50% Duty Cycle

VIN = GND

CE = GND

VIN = 3.4V

—

6.0

16.3

(5)

Eight Bits Toggling

VIN = GND

fi = 2.5MHz

50% Duty Cycle

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 (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 = Input Frequency

Ni = Number of Inputs at fi

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

2639 tbl 05

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