7429FCT52BTPB datasheet(5/8 Pages) IDT

5 / 8 page

IDT29FCT52AT/BT/CT/DT, IDT29FCT/2052AT/BT/CT, IDT29FCT53AT/BT/CT

FAST CMOS OCTAL REGISTERED TRANSCEIVERS

MILITARY AND COMMERCIAL TEMPERATURE RANGES

6.1

POWER SUPPLY CHARACTERISTICS

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

2.0

ICCD

Dynamic Power Supply Current(4)

VCC = Max.

Outputs Open

OEA or OEB = GND

VIN = VCC

VIN = GND

FCTxxxT

—

0.15

0.25

mA/

MHz

One Input Toggling

50% Duty Cycle

FCT2xxxT

—

0.06

0.12

Total Power Supply Current(6)

VCC = Max.

Outputs Open

VIN = VCC

VIN = GND

FCTxxxT

—

1.5

3.5

fCP = 10MHz

50% Duty Cycle

FCT2xxxT

—

0.6

2.2

OEA or OEB = GND

VIN = 3.4V

FCTxxxT

—

2.0

5.5

One Bit Toggling

at fi = 5MHz

50% Duty Cycle

VIN = GND FCT2xxxT

1.1

4.2

VCC = Max.

Outputs Open

VIN = VCC

VIN = GND

FCTxxxT

—

3.8

7.3(5)

fCP = 10MHz

50% Duty Cycle

FCT2xxxT

—

1.5

4.0(5)

OEA or OEB = GND

VIN = 3.4V

FCTxxxT

—

6.0

16.3(5)

Eight Bits Toggling

at fi = 2.5MHz

50% Duty Cycle

VIN = GND FCT2xxxT

—

3.8

13.0(5)

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.

2629 tbl 09

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