INDUSTRIALTEMPERATURERANGE

4

IDT74FCT157AT/CT/DT

FASTCMOSQUAD2-INPUTMULTIPLEXER

NOTES:

1. See test circuit and waveforms.

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

IDT74FCT151AT

IDT74FCT151CT

IDT74FCT151DT

Symbol

Parameter

Max.

Max.

Max.

Unit

PropagationDelay

1.5

5

1.5

4.3

1.5

3.9

ns

Ix to Zx

Ω

PropagationDelay

1.5

6

1.5

4.8

1.5

4.4

ns

E to Zx

PropagationDelay

1.5

7

1.5

5.2

1.5

4.6

ns

S to Zx

SWITCHING CHARACTERISTICS OVER OPERATING RANGE

Symbol

Parameter

Min.

Max.

Unit

Quiescent Power Supply Current

—

0.5

2

mA

TTL Inputs HIGH

Dynamic Power Supply

—

0.15

0.25

mA/

Outputs Open

MHz

E = GND

One Input Toggling

50% Duty Cycle

—

1.5

3.5

mA

Outputs Open

fo = 10MHz

50% Duty Cycle

—

1.8

4.5

E = GND

One Bit Toggling

—

1.5

mA

Outputs Open

fo = 2.5MHz

50% Duty Cycle

—

2.5

E = GND

Four Bits Toggling

NOTES:

1. For conditions shown as Min. or Max., use appropriate value specified under Electrical Characteristics for the applicable device type.

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

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

POWER SUPPLY CHARACTERISTICS