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SN74CBTLV3257 数据表(PDF) 4 Page - Texas Instruments

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部件名 SN74CBTLV3257
功能描述  LOW-VOLTAGE 4-BIT 1-OF-2FET MULTIPLEXER/DEMULTIPLEXER
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74CBTLV3257 数据表(HTML) 4 Page - Texas Instruments

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SN74CBTLV3257
LOW VOLTAGE 4BIT 1OF2 FET MULTIPLEXER/DEMULTIPLEXER
SCDS040I − DECEMBER 1997 − REVISED OCTOBER 2003
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VIK
VCC = 3 V,
II = −18 mA
−1.2
V
II
VCC = 3.6 V,
VI = VCC or GND
±1
µA
Ioff
VCC = 0,
VI or VO = 0 to 3.6 V
15
µA
ICC
VCC = 3.6 V,
IO = 0,
VI = VCC or GND
10
µA
∆ICC‡
Control inputs
VCC = 3.6 V,
One input at 3 V,
Other inputs at VCC or GND
300
µA
Ci
Control inputs
VI = 3 V or 0
3
pF
Cio(OFF)
A port
VO = 3 V or 0,
OE = VCC
10.5
pF
Cio(OFF)
B port
VO = 3 V or 0,
OE = VCC
5.5
pF
VCC = 2.3 V,
VI = 0
II = 64 mA
5
8
VCC = 2.3 V,
TYP at VCC = 2.5 V
VI = 0
II = 24 mA
5
8
ron§
TYP at VCC = 2.5 V
VI = 1.7 V,
II = 15 mA
27
40
ron§
VI = 0
II = 64 mA
5
7
VCC = 3 V
VI = 0
II = 24 mA
5
7
VCC = 3 V
VI = 2.4 V,
II = 15 mA
10
15
† All typical values are at VCC = 3.3 V (unless otherwise noted), TA = 25°C.
‡ This is the increase in supply current for each input that is at the specified voltage level, rather than VCC or GND.
§ 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)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 2.5 V
± 0.2 V
VCC = 3.3 V
± 0.3 V
UNIT
PARAMETER
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
UNIT
tpd
A or B¶
B or A
0.15
0.25
ns
tpd
S
A or B
1.8
6.1
1.8
5.3
ns
ten
S
A or B
1.7
6.1
1.7
5.3
ns
tdis
S
A or B
1
4.8
1
4.5
ns
ten
OE
A or B
1.9
5.6
2
5
ns
tdis
OE
A or B
1
5.5
1.6
5.5
ns
¶ 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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