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IDT74FST1632384PA Datasheet(PDF) 4 Page - Integrated Device Technology

Part # IDT74FST1632384PA
Description  20-BIT BUS SWITCH
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

IDT74FST1632384PA Datasheet(HTML) 4 Page - Integrated Device Technology

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IDT74FST163384, IDT74FST1632384
20-BIT BUS SWITCH
COMMERCIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
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 (fiN)
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)
fi = Input Frequency
N = Number of Switches Toggling at fi
All currents are in milliamps and all frequencies are in megahertz.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: TA =–40
°C to +85°C, VCC = 5.0V ±10%
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
∆ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = 3.4V(3)
0.5
1.5
mA
ICCD
Dynamic Power Supply
Current(4)
VCC = Max.
Outputs Open
VIN = VCC
VIN = GND
—30
40
µA/
MHz/
Enable Pin Toggling
50% Duty Cycle
Switch
IC
Total Power Supply Current(6)
VCC = Max.
Outputs Open
Enable Pins Toggling
VIN = VCC
VIN = GND
6.0
8.0
mA
(20 Switches Toggling)
fi = 10MHz
50% Duty Cycle
VIN = 3.4
VIN = GND
7.0
11.0
3473 tbl 06
3473 tbl 07
NOTES:
1. See test circuit and waveforms.
2. Minimum limits guaranteed but not tested.
3. This parameter is guaranteed by design but not tested.
4. The bus switch contributes no propagation delay other than the RC delay of the on resistance of the switch and the load capacitance. The time constant
for the switch alone is of the order of 2.5ns for 50pF load. Since this time is constant and much smaller than the rise/fall times of typical driving signals,
it adds very little propagation delay to the system. Propagation delay on the bus switch when used in a system is determined by the driving circuit on the
driving side of the switch and its interaction with the load on the driven side.
5. Measured at switch turn off, load = 50 pF in parallel with 10M
Ω scope probe, VIN = 0.0 volts.
6. Characterized parameter. Not 100% tested.
163384
1632384
Symbol
Description
Condition(1)
Min.(2)
Typ.
Max.
Unit
tPLH
tPHL
Data Propagation Delay
Ai to Bi, Bi to Ai(3,4)
CL = 50pF
RL = 500
0.25
1.25
ns
tPZH
tPZL
Switch Turn on Delay
BEx to Ai, Bi
1.5
6.5
7.5
ns
tPHZ
tPLZ
Switch Turn off Delay
BEx to Ai, Bi(3)
1.5
5.5
5.5
ns
|QCI|
Charge Injection(5,6)
1.5
pC


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