SN74CB3Q3345 Datasheet, PDF (4/11 Pages) Texas Instruments – 8 BIT FET BUS SWITCH 2.5V/3.3V LOW VOLTAGE HIGH BANDWIDTH BUS SWITCH

SN74CB3Q3345
8ĆBIT FET BUS SWITCH
2.5ĆV/3.3ĆV LOWĆVOLTAGE HIGHĆBANDWIDTH BUS SWITCH
SCDS144A − OCTOBER 2003 − REVISED NOVEMBER 2003
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP† MAX UNIT
VIK
IIN
IOZ‡
Control inputs
Ioff
ICC
∆ICC§
ICCD¶
Control inputs
Per control
input
VCC = 3.6 V,
VCC = 3.6 V,
VCC = 3.6 V,
VCC = 0,
VCC = 3.6 V,
II = −18 mA
VIN = 0 to 5.5 V
VO = 0 to 5.5 V,
VI = 0,
VO = 0 to 5.5 V,
II/O = 0,
Switch ON or OFF,
VCC = 3.6 V,
One input at 3 V,
VCC = 3.6 V,
A and B ports open,
Control input switching at 50% duty cycle
Switch OFF,
VIN = VCC or GND
VI = 0
VIN = VCC or GND
Other inputs at VCC or GND
−1.8 V
±1 µA
±1 µA
1 µA
0.7
2 mA
30 µA
0.13
0.14
mA/
MHz
Cin
Control inputs VCC = 3.3 V,
VIN = 5.5 V, 3.3 V, or 0
2.5 3.5 pF
Cio(OFF)
VCC = 3.3 V,
Switch OFF,
VIN = VCC or GND,
VI/O = 5.5 V, 3.3 V, or 0
3.5
5 pF
Cio(ON)
VCC = 3.3 V,
Switch ON,
VIN = VCC or GND,
VI/O = 5.5 V, 3.3 V, or 0
9 11.5 pF
ron#
VCC = 2.3 V,
TYP at VCC = 2.5 V
VCC = 3 V
VI = 0,
VI = 1.7 V,
VI = 0,
VI = 2.4 V,
IO = 30 mA
IO = −15 mA
IO = 30 mA
IO = −15 mA
4
8
4.5
9
Ω
4
6
4.5
8
VIN and IIN refer to control inputs. VI, VO, II, and IO refer to data pins.
† _{All typical values are at VCC = 3.3 V (unless otherwise noted), TA = 25°C.}
‡ _{For I/O ports, the parameter IOZ includes the input leakage current.}
§ _{This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND.}
¶ _{This parameter specifies the dynamic power-supply current associated with the operating frequency of a single control input (see Figure 2).}
# _{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.
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figure 3)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 2.5 V
± 0.2 V
MIN MAX
VCC = 3.3 V
± 0.3 V
MIN MAX
UNIT
fOE or fOE||
tpd^k
OE or OE
A or B
A or B
B or A
10
20 MHz
0.12
0.2 ns
ten
OE or OE
A or B
1.5 7.7 1.5 6.5 ns
tdis
OE or OE
A or B
1 6.9
1 6.8 ns
||
k
Maximum switching frequency for control input (VO > VCC, VI =
The propagation delay is the calculated RC time constant of the
5 V, RL ≥ 1 MΩ,
typical ON-state
CL = 0)
resistance
of
the
switch
and
the
specified
load
capacitance,
when driven by an ideal voltage source (zero output impedance).
4
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