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SN74CBTLV3257 Fiches technique(PDF) 8 Page - Texas Instruments

No de pièce SN74CBTLV3257
Description  FET Multiplexer/Demultiplexer
Download  28 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

SN74CBTLV3257 Fiches technique(HTML) 8 Page - Texas Instruments

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4
15
2
3
1
RON
7
5
6
RON
9
11
10
RON
12
14
13
RON
SN74CBTLV3257
Bus
Controller
4
4
Device 1
Device 2
4
16
8
GND
4A
3A
2A
1A
VCC
S
1B1
1B2
2B1
2B2
3B1
3B2
4B1
4B2
OE
0.1 2F
VCC
SN74CBTLV3257
SCDS040K – DECEMBER 1997 – REVISED APRIL 2015
www.ti.com
9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
The SN74CBTLV3257 can be used to multiplex and demultiplex up to 4 channels simultaneously in a 2:1
configuration. The application shown here is a 4-bit bus being multiplexed between two devices. the OE and S
pins are used to control the chip from the bus controller. This is a very generic example, and could apply to many
situations. If an application requires less than 4 bits, be sure to tie the A side to either high or low on unused
channels.
9.2 Typical Application
Typical Application of the SN74CBTLV3257.
9.2.1 Design Requirements
1. Recommended Input Conditions:
For specified high and low levels, see VIH and VIL in Recommended Operating Conditions.
Inputs and outputs are overvoltage tolerant slowing them to go as high as 4.6 V at any valid VCC.
2. Recommended Output Conditions:
Load currents should not exceed ±128 mA per channel.
3. Frequency Selection Criterion:
Maximum frequency tested is 200 MHz.
8
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Product Folder Links: SN74CBTLV3257


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