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參數(shù)資料
| 型號： | SN74CBTLV3857DGV |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOW-VOLTAGE 10-BIT FET BUS SWITCH WITH INTERNAL PULLDOWN RESISTORS |
| 中文描述： | 低電壓10位FET總線開關與內(nèi)部下拉電阻 |
| 文件頁數(shù)： | 3/5頁 |
| 文件大小： | 67K |
| 代理商： | SN74CBTLV3857DGV |
SN74CBTLV3857
LOW-VOLTAGE 10-BIT FET BUS SWITCH
WITH INTERNAL PULLDOWN RESISTORS
SCDS085B – OCTOBER 1998 – REVISED AUGUST 1999
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
MIN
NOM
MAX
UNIT
VCC
VREF
VIH
VIL
VIH
VIL
TA
NOTE 3: All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs literature number SCBA004.
Supply voltage
Reference voltage (0.38
×
VCC)
AC high-level control input voltage
3
3.3
3.6
V
1.15
1.25
1.35
V
VREF + 350 mV
V
AC low-level control input voltage
VREF – 350 mV
V
DC high-level control input voltage
VREF + 180 mV
V
DC low-level control input voltage
VREF – 180 mV
V
°
C
Operating free-air temperature
–40
85
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
±
1
±
5
±
1
±
5
25
V
OE
mA
μ
A
mA
μ
A
mA
II
A port
VCC= 3 6 V
VCC = 3.6 V,
VI= VCCor GND
VI = VCC or GND
B port
VREF
ICC
Ci
Cio(OFF)
VCC = 3.6 V,
VI = 3 V or 0
VO = 3 V or 0,
IO = 0,
VI = VCC or GND
Control inputs
3.5
pF
OE = VCC
VI = 0,
VI = 0.9 V,
VI = 1.25 V,
VI = 1.6 V,
5
pF
II = 24 mA
II = 24 mA
II = 24 mA
II = 24 mA
5
8
ron
VCC= 3 V
VCC = 3 V
6
7
11
13
9
40
rff
VCC = 0
VCC = 3 V to 3.6 V,
1
M
roff
VI = 1.65 V,
OE = VCC
1
All typical values are at VCC = 3.3 V, TA = 25
°
C.
Measured by the voltage drop between the A and B terminals at the indicated current through the switch. 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 = 3.3 V
±
0.3 V
UNIT
MIN
MAX
tpd§
ten
tdis
A or B
B or A
0.25
ns
OE
A or B
1.4
4.2
ns
OE
A or B
1.4
4.8
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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