IDT74FST6800PG IDT [Integrated Device Technology], IDT74FST6800PG Datasheet - Page 3

• Manufacturer Part Number: IDT74FST6800PG
• Description: 10-BIT BUS SWITCH WITH PRECHARGED OUTPUTS
• Manufacturer: IDT [Integrated Device Technology]

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 Icc formula. These limits are guaranteed but not tested.
6. I
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Industrial: T
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
POWER SUPPLY CHARACTERISTICS
IDT74FST6800
10-BIT BUS SWITCH WITH PRECHARGED OUTPUTS
Symbol
I
I
∆I
D
N
I
f
f
N = Number of SwitchesToggling at f
All currents are in milliamps and all frequencies are in megahertz
Symbol
is of the order of 0.25 ns for 50 pF 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 of 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.
C
C
CC
CCD
CP
i
H
T
= Input Frequency
∆I
I
CC
= I
= I
t
t
t
t
t
t
CCD
PLH
PHL
PZH
PZL
PHZ
PLZ
I
= Number of TTL Inputs at D
= Duty Cycle for TTL Inputs High
= Quiescent Current
C
= Clock Frequency for Register Devices (zero for non-register devices)
CC
QUIESCENT
= Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
CC
= Power Supply Current for a TTL High Input (V
+ ∆I
A
CC
= -40°C to +85°C, V
Quiescent Power Supply Current
TTL Inputs HIGH
Dynamic Power Supply
Current
Total Power Supply Current
Description
Data Propagation Delay
Ax, Bx to Bx, Ax
Switch Turn On Delay
ON to Ax, Bx
Switch Turn Off Delay
ON to Ax, Bx
+ I
D
H
INPUTS
N
T
+ I
(4)
CC
+ I
IN
CCD
= 3.4V). All other inputs at V
DYNAMIC
= 5.0V, +25°C ambient.
Parameter
(f
(3)
i
N)
H
(3,4)
i
CC
= 5.0V ± 5%
(6)
IN
CC
= 3.4V)
V
V
V
Enable Pin Toggling
50% Duty Cycle
V
Enable Pin Toggling
(Ten Switches Toggling)
f
50% Duty Cycle
i
or GND.
CC
IN
CC
CC
= 10MHz
= 3.4V
= Max., Outputs Open
= Max., Outputs Open
= Max.
(3)
Condition
R
C
Test Conditions
L
L
= 500Ω
= 50pF
3
(1)
V
V
V
V
V
V
(1)
IN
IN
IN
IN
IN
IN
= V
= V
= 3.4V
= GND
= GND
= GND
CC
CC
Min.
1.5
1.5
—
(2)
INDUSTRIAL TEMPERATURE RANGE
Typ.
—
—
—
Min.
—
—
—
—
Typ.
0.5
3.3
30
3
(2)
Max.
0.25
6.5
5.5
Max.
1.5
4.8
40
4
Enable
MHz/
Unit
µA/
mA
mA
Unit
ns
ns
ns