September 2006
rev 0.3
Power Supply Characteristics
Symbol
∆I
CC
PCS2P3805A
Parameter
Quiescent Power Supply Current
TTL Inputs HIGH
Test Conditions
1
V
CC
= Max. V
IN
= V
CC
–0.6V
3
Min
Typ
2
10
Max
30
Unit
µA
I
CCD
Dynamic Power Supply Current
4
VCC= Max.
Outputs Open
¯¯
OE
A
=
OE
B
= GND
¯¯
Per Output Toggling
50% Duty Cycle
V
IN
= V
CC
V
IN
= GND
0.035
0.06
mA/
MHz
V
IN
= V
CC
V
CC
= Max.
V
IN
= GND
Outputs Open
f
O
= 25MHz
50% Duty Cycle
OE
A
=
OE
B
= V
CC
¯¯
¯¯
V
IN
= V
CC-
0.6V
Mon. Output Toggling
V
IN
= GND
I
C
Total Power Supply Current
6
0.9
1.6
0.9
1.6
mA
V
CC
= Max.
Outputs Open
f
O
= 50MHz
50% Duty Cycle
OE
A
= OE
B
= GND
Eleven Outputs
Toggling
V
IN
= V
CC
V
IN
= GND
45
62
5
V
IN
= V
CC-
0.6V
V
IN
= GND
45
62
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
= 3.3V, +25°C ambient.
3. Per TTL driven input (V
IN
= V
CC
-0.6V); 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
C
formula.
6. I
C
= I
QUIESCENT + IINPUTS + IDYNAMIC
I
C
= I
CC
+
∆I
CC
D
H
N
T
+ I
CCD
(f
O
N
O
)
I
CC
= Quiescent Current (I
CCL
, I
CCH
and I
CCZ
)
∆I
CC
= Power Supply Current for a TTL High Input (V
IN
= V
CC
-0.6V)
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
O
= Output Frequency
N
O
= Number of Outputs at f
O
All currents are in milliamps and all frequencies are in megahertz.
3.3V CMOS Buffer Clock Driver
Notice: The information in this document is subject to change without notice.
5 of 12
PULSECORE [ PulseCore Semiconductor ]
