IDT74FCT521 Integrated Device Technology, IDT74FCT521 Datasheet - Page 4

• Manufacturer Part Number: IDT74FCT521
• Description: Fast Cmos 8-bit Identity Comparator
• Manufacturer: Integrated Device Technology

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 V
3. Per TTL driven input (V
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 I
6. I
NOTES:
1. See test circuit and waveforms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
V
IDT54/74FCT521/A/B/C
FAST CMOS 8-BIT IDENTITY COMPARATOR
Symbol
Symbol
LC
I
I
D
N
I
f
f
N
All currents are in milliamps and all frequencies are in megahertz.
C
C
CC
CCD
CP
i
t
t
t
t
t
t
t
t
I
PLH
PHL
PLH
PHL
PLH
PHL
PLH
PHL
H
T
i
= 0.2V; V
= Input Frequency
CC
= I
Symbol
= I
= Number of Inputs at f
I
I
I
= Number of TTL Inputs at D
CC
CCD
C
= Duty Cycle for TTL Inputs High
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
= Quiescent Current
I
QUIESCENT
= Dynamic Current Caused by an Output Transition Pair (HLH or LHL)
CC
= Power Supply Current for a TTL High Input (V
CC
Propagation Delay
An or Bn to O
Propagation Delay
I
Propagation Delay
An or Bn to O
Propagation Delay
I
+ I
A
A
=
=
HC
B
B
CC
= V
to O
to O
+ I
D
Quiescent Power Supply Current
Quiescent Power Supply Current TTL
Inputs HIGH
Dynamic Power Supply Current
Total Power Supply Current
CC
Parameter
Parameter
H
A
A
INPUTS
N
=
=
- 0.2V
T
A
A
B
B
+ I
=
=
CC
IN
B
B
CCD
+ I
= 3.4V); all other inputs at V
= 5.0V, +25°C ambient.
i
DYNAMIC
(f
Parameter
CP
H
/2 + f
i
N
i
)
Condition
Condition
R
R
(5)
C
C
L
L
L
L
= 500
= 500
= 50pF
= 50pF
(4)
CC
(1)
(1)
formula. These limits are guaranteed but not tested.
IN
CC
= 3.4V)
V
V
V
V
V
Outputs Open
One Input Toggling
50% Duty Cycle
V
Outputs Open
fi = 10MHz
One Bit Toggling
50% Duty Cycle
or GND.
CC
IN
CC
IN
CC
CC
Min
Min
= 3.4V
1.5
1.5
1.5
1.5
IDT74FCT521
IDT54FCT521
= Max.
= Max.
= Max.
= Max.
V
. (2)
. (2)
HC
; V
(3)
IN
Max
Max
11
10
15
9
V
4
LC
.
.
Test Conditions
Min
Min
IDT74FCT521A
IDT54FCT521A
1.5
1.5
1.5
1.5
. (2)
. (2)
MILITARY AND COMMERCIAL TEMPERATURE RANGES
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
= 3.4V
= GND
(1)
V
V
V
V
HC
LC
HC
LC
Max
Max
7.2
9.5
7.8
(FCT)
6
.
.
Min
Min
IDT74FCT521B
IDT54FCT521B
1.5
1.5
1.5
1.5
. (2)
. (2)
Max
Max
Min.
5.5
4.6
7.3
—
—
—
—
—
6
.
.
Typ.
Min
Min
0.15
0.2
0.5
1.7
IDT74FCT521C
IDT54FCT521C
1.5
1.5
1.5
1.5
2
(2)
. (2)
. (2)
Max.
0.25
1.5
2
4
5
Max
Max
4.5
4.1
5.1
4.5
.
.
MHz
Unit
mA/
mA
mA
mA
Unit
Unit
ns
ns
ns
ns