Datasheet

SN74CBTLV3257
SCDS040J –DECEMBER 1997–REVISED JANUARY 2013 www.ti.com
ELECTRICAL CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
(1)
MAX UNIT
V
IK
V
CC
= 3 V, I
I
= −18 mA −1.2 V
I
I
V
CC
= 3.6 V,
VI
= V
CC
or GND ±1 µA
I
off
V
CC
= 0, V
I
or V
O
= 0 to 3.6 V 15 µA
I
CC
V
CC
= 3.6 V, I
O
= 0, V
I
= V
CC
or GND 10 µA
∆I
CC
(2)
V
CC
= 3.6 V, One input at 3 V, Other inputs at V
CC
or GND 300 µA
Control
inputs
C
i
V
I
= 3 V or 0 3 pF
A port 10.5
C
io(OFF)
V
O
= 3 V or 0, OE = V
CC
pF
B port 5.5
V
CC
= 2.3 V, V
I
= 0 I
I
= 64 mA 5 8
TYP at V
CC
= 2.5 V
I
I
= 24 mA 5 8
V
I
= 1.7 V I
I
= 15 mA 27 40
r
on
(3)
Ω
V
I
= 0 I
I
= 64 mA 5 7
V
CC
= 3 V I
I
= 24 mA 5 7
V
I
= 2.4 V I
I
= 15 mA 10 15
(1) All typical values are at V
CC
= 3.3 V (unless otherwise noted), T
A
= 25°C.
(2) This is the increase in supply current for each input that is at the specified voltage level, rather than V
CC
or GND.
(3) Measured by the voltage drop between the A and the 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
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range (unless otherwise noted) (See Figure 1)
V
CC
= 2.5 ± 0.2 V V
CC
= 3.3 V ± 0.3 V
PARAMETER FROM (INPUT) TO (OUTPUT) UNIT
MIN MAX MIN MAX
A or B
(1)
B or A 0.15 0.25
t
pd
S A or B 1.8 6.1 1.8 5.3 ns
t
en
S A or B 1.7 6.1 1.7 5.3 ns
t
dis
S A or B 1 4.8 1 4.5 ns
t
en
OE A or B 1.9 5.6 2 5 ns
t
dis
OE A or B 1 5.5 1.6 5.5 ns
(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).
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