IDT74FCT151ATLB datasheet(4/6 Pages) IDT

4 / 6 page

6.5

IDT54/74FCT151T/AT/CT

FAST CMOS 8-INPUT MULTIPLEXER

MILITARY AND COMMERCIAL TEMPERATURE RANGES

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 (fCP/2 + fiNO)

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

NO = Number of Inputs at fi

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

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

NOTES:

2635 tbl 07

1. See test circuit and waveforms.

2. Minimum limits are guaranteed but not tested on Propagation Delays.

2635 tbl 06

Symbol

Parameter

Test Conditions(1)

Min.

Typ.(2)

Max.

Unit

∆ICC

QuiescentPower 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

E or OE = GND

One Bit Toggling

50% Duty Cycle

VIN = VCC

VIN = GND

—

0.15

0.25

mA/

MHz

Total Power Supply Current(5)

VCC = Max.

Outputs Open

fi = 10MHz

VIN = VCC

VIN = GND

—

3.2

6.5

50% Duty Cycle

E or OE= GND

One Input Toggling

VIN = 3.4V

VIN = GND

—

3.5

7.5

IDT54/74FCT151T

IDT54/74FCT151AT

IDT54/74FCT151CT

Com'l.

Mil.

Com'l.

Mil.

Com'l.

Mil.

Symbol

Parameter

Condition(1)

Min.

(2)

Max.

Min.

(2)

Max.

Min.

(2)

Max.

Min.

(2)

Max.

Min.

(2)

Max.

Min.

(2)

Max.

Unit

tPLH

tPHL

ropagation Delay

SN to

CL = 50pF

RL = 500

Ω

1.5

9.0

1.5

10.0

1.5

6.6

1.5

7.4

1.5

5.6

1.5

6.2

tPLH

tPHL

ropagation Delay

SN to Z

1.5

10.5

1.5

11.5

1.5

6.8

1.5

7.6

1.5

5.8

1.5

6.5

tPLH

tPHL

ropagation Delay

E toZ

1.5

7.0

1.5

7.5

1.5

5.6

1.5

6.3

1.5

4.8

1.5

5.4

tPLH

tPHL

ropagation Delay

Eto Z

1.5

9.5

1.5

11.0

1.5

5.8

1.5

6.6

1.5

5.0

1.5

5.7

tPLH

tPHL

ropagation Delay

IN to

1.5

6.5

1.5

7.5

1.5

5.2

1.5

5.8

1.5

4.4

1.5

4.9

tPLH

tPHL

ropagation Delay

IN to Z

1.5

7.5

1.5

9.0

1.5

5.5

1.5

6.1

1.5

4.7

1.5

5.2

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