FST3125
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4
DC ELECTRICAL CHARACTERISTICS
V
CC
T
A
= −55_C to +125_C
Symbol Parameter Conditions (V) Min Typ* Max Unit
V
IK
Clamp Diode Resistance I
IN
= *18mA 4.5 *1.2 V
V
IH
High−Level Input Voltage 4.0 to 5.5 2.0 V
V
IL
Low−Level Input Voltage 4.0 to 5.5 0.8 V
I
I
Input Leakage Current 0 v V
IN
v 5.5 V 5.5 $1.0
mA
I
OZ
OFF−STATE Leakage Current 0 v A, B v V
CC
5.5 $1.0
mA
R
ON
Switch On Resistance (Note 6) V
IN
= 0 V, I
IN
= 64 mA 4.5 4 7
W
V
IN
= 0 V, I
IN
= 30 mA 4.5 4 7
V
IN
= 2.4 V, I
IN
= 15 mA 4.5 8 15
V
IN
= 2.4 V, I
IN
= 15 mA 4.0 11 20
I
CC
Quiescent Supply Current V
IN
= V
CC
or GND, I
OUT
= 0 5.5 3
mA
DI
CC
Increase In I
CC
per Input One input at 3.4 V, Other inputs at V
CC
or GND 5.5 2.5 mA
*Typical values are at V
CC
= 5.0 V and T
A
= 25_C.
6. Measured by the voltage drop between A and B pins at the indicated current through the switch.
AC ELECTRICAL CHARACTERISTICS
Limits
T
A
= −55_C to +125_C
V
CC
= 4.5 to 5.5 V V
CC
= 4.0 V
Symbol Parameter Conditions Figures Min Max Min Max Unit
t
PHL
,
t
PLH
Prop Delay Bus to Bus
(Note 7)
V
I
= OPEN 3 and 4 0.25 0.25 ns
t
PZH
,
t
PZL
Output Enable Time V
I
= 7 V for t
PZL
V
I
= OPEN for t
PZH
3 and 5 1.0 5.0 5.5 ns
t
PHZ
,
t
PLZ
Output Disable Time V
I
= 7 V for t
PLZ
V
I
= OPEN for t
PHZ
3 and 5 1.5 5.3 5.6 ns
7. 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 50 pF load capacitance, when driven by an ideal voltage source (zero output impedance).
CAPACITANCE (Note 8)
Symbol Parameter Conditions Typ Max Unit
C
IN
Control Pin Input Capacitance V
CC
= 5.0 V 3 pF
C
I/O
Input/Output Capacitance V
CC
, OE = 5.0 V 5 pF
8. T
A
= )25_C, f = 1 MHz, Capacitance is characterized but not tested.
