ꢀꢁꢂ ꢃ ꢄ ꢅꢆ ꢇꢈ ꢉꢊ ꢋꢌ
ꢇꢍ ꢎꢏꢈꢍ ꢇꢆꢐꢑ ꢒ ꢌ ꢏꢍ ꢓꢏ ꢔ ꢓ ꢒꢆ ꢕ ꢖꢇꢆ ꢗꢘ ꢇꢒ ꢙꢒꢚꢛ ꢜꢒꢕ ꢖꢇꢆꢗ ꢘ ꢇꢒ ꢙꢒ ꢚ
SCDS054I − MARCH 1998 − REVISED OCTOBER 2003
D
D
D
5-Ω Switch Connection Between Two Ports
Rail-to-Rail Switching on Data I/O Ports
D
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
I
Supports Partial-Power-Down Mode
off
Operation
D, DBQ, DGV, OR PW PACKAGE
(TOP VIEW)
RGY PACKAGE
(TOP VIEW)
V
B4
B3
B2
B1
A
NC
OE
GND
1
2
3
4
5
6
7
8
16
CC
15 B5
14 B6
13 B7
12 B8
1
16
B3
B2
B1
A
NC
OE
15
14
13
12
11
10
2
3
4
5
6
7
B5
B6
B7
B8
S0
S1
11
10
9
S0
S1
S2
8
9
NC − No internal connection
NC − No internal connection
description/ordering information
The SN74CBTLV3251 device is a 1-of-8 high-speed FET multiplexer/demultiplexer. The low on-state resistance
of the switch allows connections to be made with minimal propagation delay.
The select inputs (S0, S1, S2) control 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 I . The I feature ensures that
off
off
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 V
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
through a pullup
CC
ORDERING INFORMATION
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
†
PACKAGE
T
A
QFN − RGY
SOIC − D
Tape and reel
SN74CBTLV3251RGYR
SN74CBTLV3251D
CL251
Tube
CBTLV3251
Tape and reel
SN74CBTLV3251DR
SN74CBTLV3251DBQR
SN74CBTLV3251PWR
SN74CBTLV3251DGVR
−40°C to 85°C
SSOP (QSOP) − DBQ Tape and reel
CL251
CL251
CL251
TSSOP − PW
TVSOP − DGV
Tape and reel
Tape and reel
†
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.
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Copyright 2003, Texas Instruments Incorporated
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