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SN74CBTLV3257DE4 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce SN74CBTLV3257DE4
Description  LOW-VOLTAGE 4-BIT 1-OF-2FET MULTIPLEXER/DEMULTIPLEXER
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

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SN74CBTLV3257
LOW VOLTAGE 4BIT 1OF2 FET MULTIPLEXER/DEMULTIPLEXER
SCDS040I − DECEMBER 1997 − REVISED OCTOBER 2003
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D 5-Ω Switch Connection Between Two Ports
D Rail-to-Rail Switching on Data I/O Ports
D Ioff Supports Partial-Power-Down Mode
Operation
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
D ESD Protection Exceeds JESD 22
− 2000-V Human-Body Model (A114-A)
− 200-V Machine Model (A115-A)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
S
1B1
1B2
1A
2B1
2B2
2A
GND
VCC
OE
4B1
4B2
4A
3B1
3B2
3A
D, DBQ, DGV, OR PW PACKAGE
(TOP VIEW)
RGY PACKAGE
(TOP VIEW)
116
89
2
3
4
5
6
7
15
14
13
12
11
10
OE
4B1
4B2
4A
3B1
3B2
1B1
1B2
1A
2B1
2B2
2A
description/ordering information
The SN74CBTLV3257 is a 4-bit 1-of-2 high-speed FET multiplexer/demultiplexer. The low on-state resistance
of the switch allows connections to be made with minimal propagation delay.
The select (S) input controls the data flow. The FET multiplexers/demultiplexers are disabled when the
output-enable (OE) input is high.
This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that
damaging current will not backflow through the device when it is powered down. The device has isolation during
power off.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QFN − RGY
Tape and reel
SN74CBTLV3257RGYR
CL257
SOIC − D
Tube
SN74CBTLV3257D
CBTLV3257
−40
°C to 85°C
SOIC − D
Tape and reel
SN74CBTLV3257DR
CBTLV3257
−40
°C to 85°C
SSOP (QSOP) − DBQ
Tape and reel
SN74CBTLV3257DBQR
CL257
TSSOP − PW
Tape and reel
SN74CBTLV3257PWR
CL257
TVSOP − DGV
Tape and reel
SN74CBTLV3257DGVR
CL257
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright
 2003, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.


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