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SN74CBT34X245 数据表(PDF) 3 Page - Texas Instruments

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部件名 SN74CBT34X245
功能描述  32-BIT FET BUS SWITCH
Download  7 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

SN74CBT34X245 数据表(HTML) 3 Page - Texas Instruments

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SN74CBT34X245
32-BIT FET BUS SWITCH
SCDS089C – MAY 1999 – REVISED MAY 2001
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
MIN
MAX
UNIT
VCC
Supply voltage
4
5.5
V
VIH
High-level control input voltage
2
V
VIL
Low-level control input voltage
0.8
V
TA
Operating free-air temperature
–40
85
°C
NOTE 3: All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to TI application report
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
VIK
VCC = 4.5 V,
II = –18 mA
–1.2
V
II
VCC = 5.5 V,
VI = 5.5 V or GND
±5
µA
Ioff
VCC = 0,
VI or VO = 0 to 5.5 V
10
µA
ICC
VCC = 5.5 V,
IO = 0,
VI = VCC or GND
6
µA
∆ICC‡ Control inputs VCC = 5.5 V,
One input at 3.4 V,
Other inputs at VCC or GND
3.5
mA
Ci
Control inputs
VI = 3 V or 0
3.5
pF
Cio(OFF)
VO = 3 V or 0,
OE = VCC
5.5
pF
§
VCC = 4 V,
TYP at VCC = 4 V
VI = 2.4 V,
II = 15 mA
11
17
ron§
VI =0
II = 64 mA
5
7
on
VCC = 4.5 V
VI = 0
II = 30 mA
5
7
VI = 2.4 V,
II = 15 mA
8
13
† All typical values are at VCC = 5 V (unless otherwise noted), TA = 25°C.
‡ This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.
§ 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, CL = 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4 V
VCC = 5 V
± 0.5 V
UNIT
(INPUT)
(OUTPUT)
MIN
MAX
MIN
MAX
tpd¶
A or B
B or A
0.25
ns
ten
OE
A or B
2.2
6.5
1.9
6
ns
tdis
OE
A or B
1.9
6.2
2.2
6.7
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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