IDT74FST163211PA Просмотр технического описания (PDF) - Integrated Device Technology
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IDT74FST163211PA Datasheet PDF : 6 Pages
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IDT74FST163211
24-BIT BUS SWITCH
INDUSTRIAL TEMPERATURE RANGE
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Min. Typ.(2) Max.
Unit
∆ICC
Quiescent Power Supply Current
VCC = Max.
TTL Inputs HIGH
VIN = 3.4V(3)
—
0.5
1.5
mA
ICCD
Dynamic Power Supply
Current(4,5)
VCC = Max.
One Enable Pin Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
—
240
320
µA/
MHz/
Switch
IC
Total Power Supply Current(6)
VCC = Max.
One Enable Pin Toggling
VIN = VCC
VIN = GND
—
2.4
3.2
mA
fi = 10MHz
VIN = 3.4V
—
2.7
4
50% Duty Cycle
VIN = GND
VCC = Max.
Two Enable Pins Toggling
VIN = VCC
VIN = GND
—
4.8
6.4
fi = 10MHz
50% Duty Cycle
VIN = 3.4V
VIN = GND
—
5.4
8
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. TA = –40°C to +85°C
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. Switch inputs do not contribute to ∆ICC.
4. This parameter represents the current required to switch the internal capacitance of the control inputs at the specified frequency.
Switch inputs generate no significant power supply currents as they transition. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. CPD = ICCD/VCC
CPD = Power Dissipation Capacitance
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 = Control Input Frequency
N = Number of Control Inputs Toggling at fi
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: TA = -40°C to +85°C, VCC = 5.0V ± 10%
VCC = 5V ± 10%
VCC = 4V
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
|QCI|
Description(1)
Data Propagation Delay
A to B, B to A(2)
Switch CONNECT Delay
xOE to A or B
Switch DISCONNECT Delay
xOE to A or B
Charge Injection During Switch DISCONNECT
xOE to A or B(3)
Min.
Typ.
Max.
Max.
Unit
—
—
0.25
0.25
ns
1.5
—
6.5
7
ns
1.5
—
5.5
7
ns
—
1.5
—
—
pC
NOTES:
1. See test circuits and waveforms.
2. The bus switch contributes no Propagation Delay other than the RC Delay of the load interacting with the RC of the switch.
3. |QCI| is the charge injection for a single switch DISCONNECT and applies to either single switches or multiplexers. |QDCI| is the charge injection for a multiplexer as
the multiplexed port switches from one path to another. Charge injection is reduced because the injection from the DISCONNECT of the first path is compensated by
the CONNECT of the second path.
4
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