PI74FCT3244 Ver la hoja de datos (PDF) - Pericom Semiconductor
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PI74FCT3244 Datasheet PDF : 7 Pages
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PI74FCT3244
3.3V 8-Bit Buffer/Line Driver
Power Supply Characteristics
Parameters
Description
Test Conditions(1)
Min. Typ.(2)
ICC
Quiescent Power
Supply Current
VCC = Max.
VIN = GND or VCC
0.1
ΔICC
Quiescent Power
Supply Current, TTL
Inputs HIGH
VCC = Max.
VIN = VCC – 0.6V(3)
VCC = Max.,
ICCD
Dynamic Power
Supply(4)
Outputs Open
OEX = GND
One Bit Toggling
VIN = VCC
VIN = GND
95
50% Duty Cycle
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
VIN = VCC – 0.6V
VIN = GND
0.97
OEX = GND
IC
Total Power Supply
Current(6)
One Bit Toggling
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
VIN = VCC – 0.6V
VIN = GND
1.9
OEX = GND
8 Bits Toggling
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 3.3V, TA=+25°C.
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. IC =IQUIECSENT + IINPUTS + IDYNAMIC
IC = ICC + ΔICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current (ICCL, ICCH and ICCZ)
ΔICC = Power Supply Current for a TTL High Input
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices)
NCP = Number of Clock Inputs at fCP
fI = Input Frequency
NI = Number of Inputs at fI
Max.
10
500
100
2.3
4.7(5)
Units
ΜA
µA
µA/
MHz
mA
06-0218
4
PS7067I
06/20/06
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