PI74LPT16244 데이터 시트보기 (PDF) - Pericom Semiconductor
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PI74LPT16244 Datasheet PDF : 6 Pages
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PI74LPT16244
3.3V, 16-Bit Buffer/Line Driver
Power Supply Characteristics
Parameters
Description
Test Conditions(1)
ICC
Quiescent Power Supply Current VCC = Max.
VIN = GND or VCC
ΔICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = VCC – 0.6V(3)
ICCD
Dynamic Power Supply(4)
VCC = Max.,
Outputs Open
XOE = GND
One Bit Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
IC
Total Power Supply
Current(6)
VCC = Max.,
Outputs Open
fI = 10 MHZ
50% Duty Cycle
XOE = GND
One Bit Toggling
VCC = Max.,
Outputs Open
fI = 2.5 MHZ
50% Duty Cycle
XOE = GND
16 Bits Toggling
VIN = VCC – 0.6V
VIN = GND
VIN = VCC – 0.6V
VIN = GND
Min. Typ(2) Max.
0.1 10
500
50
75
0.5 0.8
2.0 3.3(5)
Units
μA
μA/
MHz
mA
Notes:
1. ForMax. or Min. conditions, use appropriate value specified 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. IC =IQUIESCENT + 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
All currents are in milliamps and all frequencies are in megahertz.
08-0291
4
PS2067G
11/10/08
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