
7.2
5
IDT29FCT520A/B/C
MULTILEVEL PIPELINE REGISTER
MILITARY AND COMMERCIAL TEMPERATURE RANGES
POWER SUPPLY CHARACTERISTICS 
V
LC
 = 0.2V, V
HC
 = V
CC
 – 0.2V
Symbol
Parameter
I
CC
Quiescent Power
Supply Current
I
CC
Quiescent Power Supply
Current, TTL Input HIGH
I
CCD
Dynamic Power Supply Current
(4)
Test Conditions
(1)
Min.
—
Typ.
(2)
0.2
Max.
1.5
Unit
mA
V
CC
 = Max.
V
IN
≥
 V
HC
; V
IN
≤
 V
LC
V
CC
 = Max.
V
IN
 = 3.4V
(3)
V
CC
 = Max., Outputs Open
OE
 = GND
One Input Toggling
50% Duty Cycle
V
CC
 = Max., Outputs Open
f
CP
 = 10MHz
50% Duty Cycle
OE
 = GND
One Bit Toggling
at f
i
 = 5MHz, 50% Duty Cycle
V
CC
 = Max., Outputs Open
f
CP
 = 10MHz
50% Duty Cycle
OE
 = GND
Eight Bits Toggling
at f
i
 = 5MHz, 50% Duty Cycle
—
0.5
2.0
mA
V
IN
≥
 V
HC
V
IN
≤
 V
LC
—
0.15
0.25
mA/
MHz
I
C
Total Power Supply Current
(6)
V
IN
≥
 V
HC
V
IN
≤
 V
LC
(FCT)
V
IN
 = 3.4V
V
IN
 = GND
—
1.7
4.0
mA
—
2.2
6.0
V
IN
≥
 V
HC
V
IN
≤
 V
LC
(FCT)
V
IN
 = 3.4V
V
IN
 = GND
—
7.0
12.8
(5)
—
9.2
21.8
(5)
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
CC 
= 5.0V, +25
°
C ambient.
3. Per TTL driven input (V
IN
 = 3.4V); all other inputs at V
CC 
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 I
CC 
formula.  These limits are guaranteed but not tested.
6. I
C
 = I
QUIESCENT
 +I
INPUTS
 + I
DYNAMIC
I
C
 = I
CC
 + 
I
CC 
D
H
N
T 
+ I
CCD 
(f
CP
/2 + f
i
N
i
)
I
CC
 = Quiescent Current
I
CC 
= Power Supply Current for a TTL HIgh Input (V
IN
 = 3.4V)
D
H
 = Duty Cycle for TTL Inputs High
N
T
 = Number of TTL inputs at D
H
I
CCD 
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
f
CP
 = Clock Frequency for Register Devices (Zero for Non-Register Devices)
f
i
 = Input Frequency
N
i
 = Number of Inputs at f
i
All currents are in milliamps and all frequencies are in megahertz.
2620 tbl 06