IDT74FST163384 Integrated Device Technology, IDT74FST163384 Datasheet - Page 4

• Manufacturer Part Number: IDT74FST163384
• Description: 20-bit Bus Switch
• Manufacturer: Integrated Device Technology

SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: T
IDT74FST163384, IDT74FST1632384
20-BIT BUS SWITCH
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 V
3. Per TTL driven input (V
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 I
6. I
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
5. Measured at switch turn off, load = 50 pF in parallel with 10M
6. Characterized parameter. Not 100% tested.
Symbol
t
t
t
t
t
t
|Q
PLH
PHL
PZH
PZL
PHZ
PLZ
I
I
D
N
I
f
N = Number of Switches Toggling at fi
All currents are in milliamps and all frequencies are in megahertz.
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.
Symbol
C
C
CC
CCD
i
I
CI
H
T
= Input Frequency
I
I
CC
CCD
C
= I
= I
= Number of TTL Inputs at D
I
|
= Duty Cycle for TTL Inputs High
= Quiescent Current
CC
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
QUIESCENT
CC
= Power Supply Current for a TTL High Input (V
+ I
Data Propagation Delay
Ai to Bi, Bi to Ai
Switch Turn on Delay
BEx to Ai, Bi
Switch Turn off Delay
BEx to Ai, Bi
Charge Injection
CC
A
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply
Current
Total Power Supply Current
D
+ I
H
=–40 C to +85 C, V
N
INPUTS
T
Description
+ I
CC
(3)
(4)
IN
CCD
+ I
= 5.0V, +25 C ambient.
= 3.4V). All other inputs at V
(3,4)
Parameter
DYNAMIC
(5,6)
(f
i
N)
H
CC
= 5.0V 10%
(6)
CC
Condition
R
C
formula. These limits are guaranteed but not tested.
L
L
IN
= 500
= 50pF
CC
= 3.4V)
V
V
V
Outputs Open
Enable Pin Toggling
50% Duty Cycle
V
Outputs Open
Enable Pins Toggling
(20 Switches Toggling)
fi = 10MHz
50% Duty Cycle
CC
IN
CC
CC
or GND.
= 3.4V
(1)
= Max.
= Max.
= Max.
scope probe, V
(3)
Min.
4
Test Conditions
1.5
1.5
—
—
(2)
IN
= 0.0 volts.
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
= V
= GND
= V
= GND
= 3.4
= GND
(1)
Typ.
1.5
CC
CC
—
—
—
COMMERCIAL TEMPERATURE RANGE
163384
0.25
6.5
5.5
—
Min.
—
—
—
—
Max.
Typ.
0.5
6.0
7.0
30
1632384
(2)
1.25
7.5
5.5
—
Max.
11.0
1.5
8.0
40
3473 tbl 07
Switch
3473 tbl 06
MHz/
Unit
Unit
mA
mA
pC
ns
ns
ns
A/