IDT74FCT161T datasheet(4/7 Pages) IDT

部品番号	IDT74FCT161T

部品情報	FAST CMOS SYNCHRONOUS PRESETTABLE BINARY COUNTERS

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IDT54/74FCT161T/AT/CT, IDT54/74FCT163T/AT/CT

FAST CMOS SYNCHRONOUS PRESETTABLE BINARY COUNTERS

MILITARY AND COMMERCIAL TEMPERATURE RANGES

6.7

4

POWER SUPPLY CHARACTERISTICS

Symbol

Parameter

Test Conditions

(1)

Min.

Typ.

(2)

Max.

Unit

∆ICC

Quiescent Power Supply Current

VCC = Max.

—

0.5

2.0

mA

TTL Inputs HIGH

VIN = 3.4V

(3)

ICCD

Dynamic Power Supply Current

(4)

VCC = Max., Outputs Open

VIN = VCC

—

0.15

0.25

mA/

Load Mode

VIN = GND

MHz

CEP = CET =

PE = GND

MR or SR = VCC

One Input Toggling

50% Duty Cycle

IC

Total Power Supply Current

(6)

VCC = Max., Outputs Open

VIN = VCC

—

1.5

3.5

mA

Load Mode

VIN = GND

fCP = 10MHz

50% Duty Cycle

CEP = CET =

PE = GND

VIN = 3.4V

—

2.0

5.5

MR or SR = VCC

VIN = GND

One Bit Toggling

at fi = 5MHz

50% Duty Cycle

VCC = Max., Outputs Open

VIN = VCC

—

3.8

7.3

(5)

Load Mode

VIN = GND

fCP = 10MHz

50% Duty Cycle

CEP = CET =

PE = GND

VIN = 3.4V

—

5.0

12.3

(5)

MR or SR = VCC

VIN = GND

Four Bits Toggling

at fi = 5MHz

50% Duty Cycle

2611 tbl 06

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.

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