Datasheet
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Electrical Characteristics
(1)
Switching Characteristics
SN74CBT3253C
DUAL 1-OF-4 FET MULTIPLEXER/DEMULTIPLEXER
5-V BUS SWITCH WITH –2-V UNDERSHOOT PROTECTION
SCDS123B – JULY 2003 – REVISED JANUARY 2007
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
(2)
MAX UNIT
V
IK
Control inputs V
CC
= 4.5 V, I
IN
= –18 mA –1.8 V
0 mA > I
I
≥ –50 mA,
V
IKU
Data inputs V
CC
= 5 V, Switch OFF –2 V
V
IN
= V
CC
or GND,
I
IN
Control inputs V
CC
= 5.5 V, V
IN
= V
CC
or GND ± 1 µ A
V
O
= 0 to 5.5 V, Switch OFF,
I
OZ
(3)
V
CC
= 5.5 V, ± 10 µ A
V
I
= 0, V
IN
= V
CC
or GND
I
off
V
CC
= 0, V
O
= 0 to 5.5 V, V
I
= 0 10 µ A
I
I/O
= 0,
I
CC
V
CC
= 5.5 V, Switch ON or OFF 3 µ A
V
IN
= V
CC
or GND,
∆ I
CC
(4)
Control inputs V
CC
= 5.5 V, One input at 3.4 V, Other inputs at V
CC
or GND 2.5 mA
C
in
Control inputs V
IN
= 3 V or 0 3.5 pF
A port 14
C
io(OFF)
V
I/O
= 3 V or 0, Switch OFF, V
IN
= V
CC
or GND pF
B port 5.5
C
io(ON)
V
I/O
= 3 V or 0, Switch ON, V
IN
= V
CC
or GND 22 pF
V
CC
= 4 V,
V
I
= 2.4 V, I
O
= –15 mA 8 12
TYP at V
CC
= 4 V
I
O
= 64 mA 3 6
r
on
(5)
Ω
V
I
= 0
V
CC
= 4.5 V I
O
= 30 mA 3 6
V
I
= 2.4 V, I
O
= –15 mA 5 10
(1) V
IN
and I
IN
refer to control inputs. V
I
, V
O
, I
I
, and I
O
refer to data pins.
(2) All typical values are at V
CC
= 5 V (unless otherwise noted), T
A
= 25 ° C.
(3) For I/O ports, the parameter I
OZ
includes the input leakage current.
(4) This is the increase in supply current for each input that is at the specified voltage level, rather than V
CC
or GND
(5) Measured by the voltage drop between the A and B terminals at the indicated current through the switch. ON-state resistance is
determined by the lower of the voltages of the two (A or B) terminals.
over recommended operating free-air temperature range, C
L
= 50 pF (unless otherwise noted) (see Figure 3 )
V
CC
= 5 V
V
CC
= 4 V
FROM TO
± 0.5 V
PARAMETER UNIT
(INPUT) (OUTPUT)
MIN MAX MIN MAX
t
pd
(1)
A or B B or A 0.24 0.15 ns
t
pd(s)
S A 5.9 1.5 5.4 ns
S B 6.2 1.5 5.8
t
en
ns
OE A or B 5.7 1.5 5.3
S B 6.2 1.5 5.8
t
dis
ns
OE A or B 5.7 1.5 5.3
(1) The propagation delay is the calculated RC time constant of the typical ON-state resistance of the switch and the specified load
capacitance, when driven by an ideal voltage source (zero output impedance).
5
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