IDT74FST163214 IDT [Integrated Device Technology], IDT74FST163214 Datasheet - Page 4

• Manufacturer Part Number: IDT74FST163214
• Description: 12-BIT 3:1 MUX/DEMUX SWITCH
• Manufacturer: IDT [Integrated Device Technology]

SWITCHING CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Commercial: T
IDT74FST163214
12-BIT 3:1 MUX/DEMUX 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 10 M scope probe, V
6. Measured at switch turn off through bus multiplexer, (e.g.- A to B
7. Characterized parameter. Not 100% tested.
Symbol
t
t
t
t
t
t
t
|Q
|Q
PLH
PHL
BX
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.
injection is reduced because the injection from the turn off of the A to B
Symbol
C
C
CC
CCD
i
I
CI
DCI
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
A to B, B to A
Switch Multiplex Delay
S to A, B
Switch Turn on Delay
S to A, B
Switch Turn off Delay
S to A, B
Charge Injection, Typical
Differential Charge Injection, Typical
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
+ I
CC
(4)
CCD
IN
(3,4)
+ I
= 5.0V, +25 C ambient.
= 3.4V). All other inputs at V
Parameter
DYNAMIC
(f
Description
i
N)
H
(5,7)
CC
= 5.0V 10%
(6)
CC
(6,7)
formula. These limits are guaranteed but not tested.
IN
CC
= 3.4V)
V
V
V
Outputs Open
Enable Pin Toggling
50% Duty Cycle
V
Outputs Open
3 Select Pins Toggling
(12 Switches Toggling)
fi = 10MHz
50% Duty Cycle
CC
IN
CC
CC
or GND.
= 3.4V
= Max.
= Max.
= Max.
1
= >A to B
Condition
R
C
(3)
L
L
= 500
= 50pF
1
4
Test Conditions
switch is compensated by the turn on of the A to B
2
), load = 50 pF in parallel with 10 M scope probe, V
(1)
IN
= 0.0 volts.
V
V
V
V
V
V
IN
IN
IN
IN
IN
IN
Min.
= V
= GND
= V
= GND
= 3.4
= GND
1.5
1.5
1.5
—
—
—
(1)
CC
CC
(2)
COMMERCIAL TEMPERATURE RANGE
Typ.
1.5
0.5
—
—
—
—
Min.
—
—
—
—
Typ.
2
0.5
3.6
4.4
IN
switch.
30
at A = 0.0 volts. Charge
Max.
(2)
0.25
6.5
6.5
—
—
7
Max.
1.5
4.8
7.1
40
Switch
3209 tbl 06
3209 tbl 07
MHz/
Unit
Unit
pC
mA
mA
ns
ns
ns
ns
A/