FST32253 Fairchild Semiconductor, FST32253 Datasheet - Page 3

• Manufacturer Part Number: FST32253
• Description: Dual 4:1 Multiplexer-Demultiplexer Bus Switch with 25 ? Series Resistors in Outputs
• Manufacturer: Fairchild Semiconductor

t
t
t
PHL
PZH
PHZ
C
C
AC Electrical Characteristics
Note 6: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On
Resistance of the switch and the 50pF load capacitance, when driven by an ideal voltage the source (zero output impedance).
Capacitance
Note 7: T
AC Loading and Waveforms
Note: Input driven by 50
Note: C
Note: Input PRR
IN
I/O
Symbol
, t
, t
, t
Symbol
PLH
PZL
PLZ
A Port
B Port
L
A
includes load and stray capacitance
25 C, f
Propagation Delay Bus to Bus
(Note 6)
Propagation Delay, Select to Bus A
Output Enable Time, Select to Bus B
Output Enable Time, I
Output Disable Time., Select to Bus B
Output Disable Time, I
Control Pin Input Capacitance
Input/Output Capacitance
1.0 MHz, t
1 MHz, Capacitance is characterized but not tested.
source terminated in 50
(Note 7)
W
Parameter
500 ns
Parameter
OE
OE
to Bus A, B
to Bus A, B
FIGURE 1. AC Test Circuit
FIGURE 2. AC Waveforms
V
Min
0.5
0.5
0.5
0.5
0.5
CC
C
4.5 – 5.5V
L
T
A
50pF, RU
Max
1.25
6.7
6.8
6.0
5.7
5.7
Typ
40 C to 85 C
13
3
5
3
RD
Min
V
CC
500
4.0V
Max
Max
1.25
7.3
7.3
6.4
6.4
6.5
Units
ns
ns
ns
Units
pF
pF
pF
V
V
V
V
V
I
I
I
I
I
OPEN
7V for t
OPEN for t
7V for t
OPEN for t
Conditions
V
V
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CC
CC
PZL
PLZ
, OE
PZH
PHZ
5.0V
Conditions
5.0V
Number
Figures
Figures
Figures
Figure
1, 2
1, 2
1, 2