PI74LPT16374
3.3V 16-Bit Register (3-State)
4
PS2070F 11/10/08
Power Supply Characteristics
Parameters De scrip tion
Test Conditions
(1)
Min.
Typ
(2)
Max. Units
I
CC
Quiescent Power Supply
Current
V
CC
= Max.
V
IN
= GND or
V
CC
0.1 10
ΜA
ΔI
CC
Quiescent Power Supply
Current TTL Inputs HIGH
V
CC
= Max.
V
IN
= V
CC
– 0.6V
(3)
500
I
CCD
Dynamic Power Supply
(4)
V
CC
= Max.,
Outputs Open
XOE = GND
xLE = V
CC
One Bit Toggling
50% Duty Cycle
V
IN
= V
CC
V
IN
= GND
50 75
μA/
MHz
I
C
Total Power Supply
Current
(6)
V
CC
= Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
XOE = GND
One Bit Toggling
V
IN
= V
CC
– 0.6V
V
IN
= GND
0.6 2.3
mA
V
CC
= Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
XOE = GND
16 Bits Toggling
V
IN
= V
CC
– 0.6V
V
IN
= GND
2.1
4.7
(5)
Notes:
1. For Max. or Min. conditions, use appropriate value specifi ed under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 3.3V, +25°C ambient.
3. Per TTL driven input; all other inputs at Vcc 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 Icc formula. These limits are guaranteed but not tested.
6. I
C =IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ΔICC DHNT + ICCD (fCP/2 + fINI)
I
CC = Quiescent Current (ICCL, ICCH and ICCZ)
ΔI
CC = Power Supply Current for a TTL High Input
D
H = Duty Cycle for TTL Inputs High
N
T = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
f
CP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
N
CP = Number of Clock Inputs at fCP
fI = Input Frequency
N
I = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
