PI74FCT377T Ver la hoja de datos (PDF) - Pericom Semiconductor
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PI74FCT377T Datasheet PDF : 3 Pages
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PI74FCT377T
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Power Supply Characteristics
Parameters Description
Test Conditions(1)
Min. Typ(2) Max.
ICC
Quiescent Power
Supply Current
VCC = Max.
VIN = GND
or VCC
0.1 500
∆ICC
Supply Current per
Input @ TTL HIGH
VCC = Max.
VIN = 3.4V(3)
0.5 2.0
ICCD
Supply Current per
Input per MHz(4)
VCC = Max., Outputs Open
CE = GND
One Input Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
0.15 0.25
IC
Total Power Supply
Current(6)
VCC = Max., Outputs Open
fCP = 10 MHZ, 50% Duty Cycle
CE = GND
50% Duty Cycle
One Bit toggling at fI = 5 MHZ
VIN = VCC
VIN = GND
VIN = 3.4V
VIN = GND
VCC = Max., Outputs Open
VIN = VCC
fCP = 10 MHZ, 50% Duty Cycle VIN = GND
CE = GND
VIN = 3.4V
Eight Bits toggling at fI = 2.5 MHZ VIN = GND
50% Duty Cycle
1.57 3.5(5)
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.)
Units
µA
mA
mA/
MHz
mA
Switching Characteristics over Operating Range
377T
Parameters Description
Conditions(1)
Com.
Min
Max
tPLH
Propagation Delay
CL = 50 pF
2.0
13.0
tPHL
CP to ON
RL = 500Ω
tSU
Setup Time, HIGH or LOW
2.5
—
Dn to CP
tH
Hold Time, HIGH or LOW
2.0
—
Dn to CP
tSU
Setup Time HIGH or LOW
4.0
—
CE to CP
tH
Hold Time HIGH or LOW
1.5
—
CE to CP
tW
Clock Pulse Width(3)
7.0
—
HIGH or LOW
Notes:
1. See test circuit and wave forms.
2. Minimum limits are guaranteed but not tested on Propagation Delays.
3. This parameter guaranteed but not production tested.
377AT
Com.
Min
Max
2.0
7.2
2.0
—
1.5
—
3.5
—
1.5
—
6.0
—
377CT
Com.
Min
Max
2.0
5.2
2.0
—
1.5
—
3.5
—
1.5
—
6.0
—
377DT
Com.
Min
Max Unit
2.0
4.5 ns
2.0
— ns
1.5
— ns
2.0
— ns
1.5
— ns
3.0
— ns
3
PS2017A 03/11/96
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