Datasheet

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Recommended Operating Conditions
(1)
Electrical Characteristics
(1)
SN74CB3Q3125
QUADRUPLE FET BUS SWITCH
2.5-V/3.3-V LOW-VOLTAGE HIGH-BANDWIDTH BUS SWITCH
SCDS143B – OCTOBER 2003 – REVISED MARCH 2005
MIN MAX UNIT
V
CC
Supply voltage 2.3 3.6 V
V
CC
= 2.3 V to 2.7 V 1.7 5.5
V
IH
High-level control input voltage V
V
CC
= 2.7 V to 3.6 V 2 5.5
V
CC
= 2.3 V to 2.7 V 0 0.7
V
IL
Low-level control input voltage V
V
CC
= 2.7 V to 3.6 V 0 0.8
V
I/O
Data input/output voltage 0 5.5 V
T
A
Operating free-air temperature –40 85 °C
(1) All unused control inputs of the device must be held at V
CC
or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
(2)
MAX UNIT
V
IK
V
CC
= 3.6 V, I
I
= –18 mA –1.8 V
I
IN
Control inputs V
CC
= 3.6 V, V
IN
= 0 to 5.5 V ±1 µ A
V
O
= 0 to 5.5 V, Switch OFF,
I
OZ
(3)
V
CC
= 3.6 V, ±1 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 1 µ A
I
I/O
= 0,
I
CC
V
CC
= 3.6 V, V
IN
= V
CC
or GND 0.3 1 mA
Switch ON or OFF,
∆ I
CC
(4)
Control inputs V
CC
= 3.6 V, One input at 3 V, Other inputs at V
CC
or GND 30 µ A
V
CC
= 3.6 V, A and B ports open,
Per control mA/
I
CCD
(5)
0.04 0.2
input MHz
Control input switching at 50% duty cycle
C
in
Control inputs V
CC
= 3.3 V, V
IN
= 5.5 V, 3.3 V, or 0 2.5 3.5 pF
Switch OFF,
C
io(OFF)
V
CC
= 3.3 V, V
I/O
= 5.5 V, 3.3 V, or 0 4 5 pF
V
IN
= V
CC
or GND,
Switch ON,
C
io(ON)
V
CC
= 3.3 V, V
I/O
= 5.5 V, 3.3 V, or 0 8 10 pF
V
IN
= V
CC
or GND,
V
I
= 0, I
O
= 30 mA 4 8
V
CC
= 2.3 V,
TYP at V
CC
= 2.5 V
V
I
= 1.7 V, I
O
= –15 mA 4 9
r
on
(6)
Ω
V
I
= 0, I
O
= 30 mA 4 6
V
CC
= 3 V
V
I
= 2.4 V, I
O
= –15 mA 4 8
(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
= 3.3 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 TTL voltage level, rather than V
CC
or GND.
(5) This parameter specifies the dynamic power-supply current associated with the operating frequency of a single control input (see
Figure 2 ).
(6) 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.
4