pi74lpt244 Pericom Semiconductor Corporation, pi74lpt244 Datasheet - Page 4

• Manufacturer Part Number: pi74lpt244
• Description: Octal Buffer/line Driver, Oe Active Low
• Manufacturer: Pericom Semiconductor Corporation

Capacitance
Notes:
1.
Notes:
1.
2.
3.
4.
5.
6.
Power Supply Characteristics
Parameters
C
C
Parameters
I
ΔI
I
I
CC
CCD
C
IN
OUT
CC
This parameter is determined by device characterization but is not production tested.
ΔI
All currents are in milliamps and all frequencies are in megahertz.
For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
Typical values are at Vcc = 3.3V, +25°C ambient.
Per TTL driven input; all other inputs at Vcc or GND.
This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested.
I
I
I
D
N
I
f
N
f
N
C
C
CC
CCD
CP
I
H
T
CP
I
= Input Frequency
CC
=I
= I
= Number of Inputs at f
= Number of TTL Inputs at D
= Clock Frequency for Register Devices (Zero for Non-Register Devices)
06-0181
= Quiescent Current (I
= Duty Cycle for TTL Inputs High
= Number of Clock Inputs at f
QUIESCENT
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
= Power Supply Current for a TTL High Input
CC
+ ΔI
(1)
(T
CC
Description
Quiescent Power Supply
Current
Quiescent Power Supply
Current
TTL Inputs HIGH
Dynamic Power Supply
Total Power Supply
Current
+ I
A
D
= 25°C, f = 1 MHz)
H
INPUTS
Description
Input Capacitance
Output Capacitance
N
T
+ I
(6)
+ I
CCD
CCL
I
DYNAMIC
(f
, I
CP
CCH
/2 + f
H
CP
and I
I
N
(4)
I
CCZ
)
)
Test Conditions
V
V
V
Outputs Open OE
50% Duty Cycle
V
Open f
50% Duty Cycle
OE
One Bit Toggling
V
Open f
50% Duty Cycle
OE
8 Bits Toggling
One Bit Toggling
CC
CC
CC
CC
CC
Test Conditions
X
X
= Max.
= Max.
= Max.,
= Max., Outputs
= Max., Outputs
= GND
= GND
I
I
= 10 MH
= 2.5 MH
(1)
V
Z
V
X
OUT
Z
4
IN
= GND
= 0V
= 0V
V
or V
V
– 0.6V
V
V
V
– 0.6V
V
V
– 0.6V
V
IN
IN
IN
IN
IN
IN
IN
IN
= GND
CC
= V
= V
= GND
= V
= GND
= V
= GND
(3)
CC
CC
CC
CC
Typ
3.3V 8-Bit Buffer /Line Driver
4.5
5.5
Min.
Max.
Typ
0.1
0.6
2.1
50
6
8
(2)
Max.
PI74LPT244
4.7
500
2.3
Units
10
75
PS2058F
(5)
pF
Units
MHz
µA/
mA
mA
µA
µA
06/05/06