4

MILITARYANDCOMMERCIALTEMPERATURERANGES

IDT54/74FCT521/A/B/C

FAST CMOS 8-BIT IDENTITY COMPARATOR

NOTES:

1. For conditions shown as Max. or Min., 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.

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

POWER SUPPLY CHARACTERISTICS

Symbol

Parameter

Min.

Max.

Unit

Quiescent Power Supply Current

—0.2

1.5

mA

Quiescent Power Supply Current TTL

Inputs HIGH

—0.5

2

mA

Outputs Open

One Input Toggling

50% Duty Cycle

—

0.15

0.25

mA/

MHz

Outputs Open

—1.7

4

mA

fi = 10MHz

One Bit Toggling

50% Duty Cycle

—2

5

NOTES:

1. See test circuit and waveforms.

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

SWITCHING CHARACTERISTICS OVER OPERATING RANGE - COMMERCIAL

IDT74FCT521

IDT74FCT521A

IDT74FCT521B

IDT74FCT521C

Symbol

Parameter

Unit

Propagation Delay

An or Bn to

Ω

1.5

11

1.5

7.2

1.5

5.5

1.5

4.5

ns

Propagation Delay

1.5

10

1.5

6

1.5

4.6

1.5

4.1

ns

SWITCHING CHARACTERISTICS OVER OPERATING RANGE - MILITARY

IDT54FCT521

IDT54FCT521A

IDT54FCT521B

IDT54FCT521C

Symbol

Parameter

Unit

Propagation Delay

An or Bn to

Ω

1.5

15

1.5

9.5

1.5

7.3

1.5

5.1

ns

Propagation Delay

1.5

9

1.5

7.8

1.5

6

1.5

4.5

ns