PI74FCT2543T Просмотр технического описания (PDF) - Pericom Semiconductor
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PI74FCT2543T Datasheet PDF : 5 Pages
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PI74FCT543T/544T
(25Ω Series) PI74FCT2543T
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Power Supply Characteristics
Parameters Description
ICC
Quiescent Power
Supply Current
∆ICC
Supply Current per
Input @ TTL HIGH
ICCD
Supply Current per
Input per MHz(4)
IC
Total Power Supply
Current(6)
Test Conditions(1)
VCC = Max.
VCC = Max.
VIN = GND
or VCC
VIN = 3.4V(3)
VCC = Max.,
Outputs Open
CEAB and OEAB = GND
CEBA = VCC
One Input Toggling
50% Duty Cycle
VCC = Max.,
Outputs Open
fCP = 10 MHZ (LEAB)
50% Duty Cycle
CEAB and OEAB = GND
CEBA = VCC
fI = 5 MHZ
One Bit Toggling
VCC = Max.,
Outputs Open
fCP = 10 MHZ (LEAB)
50% Duty Cycle
CEAB and OEAB = GND
CEBA = Vcc
Eight Bits Toggling
fI = 2.5 MHZ
50% Duty Cycle
VIN = VCC
VIN = GND
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
Min. Typ(2) Max. Units
0.1 500 µA
0.5 2.0 mA
0.15 0.25 mA/
MHz
1.5 3.5(5) mA
2.0 5.5(5)
3.8 7.3(5)
6.0 16.3(5)
Notes:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V); 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 + ∆ICC DHNT + ICCD (fCP/2 + fINI)
ICC = Quiescent Current
∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
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)
fI = Input Frequency
NI = Number of Inputs at fI
All currents are in milliamps and all frequencies are in megahertz.
4
PS2020A 03/11/96
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