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SN74CBT3251 Datasheet, PDF (1/12 Pages) Texas Instruments – 1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER
D 5-Ω Switch Connection Between Two Ports
D, DB, DBQ, OR PW PACKAGE
(TOP VIEW)
B4 1
B3 2
B2 3
B1 4
A5
NC 6
OE 7
GND 8
16 VCC
15 B5
14 B6
13 B7
12 B8
11 S0
10 S1
9 S2
NC − No internal connection
SN74CBT3251
1ĆOFĆ8 FET MULTIPLEXER/DEMULTIPLEXER
SCDS019L − MAY 1995 − REVISED JANUARY 2004
D TTL-Compatible Input Levels
RGY PACKAGE
(TOP VIEW)
1
B3 2
B2 3
B1 4
A5
NC 6
OE 7
8
16
15 B5
14 B6
13 B7
12 B8
11 S0
10 S1
9
description/ordering information
NC − No internal connection
The SN74CBT3251 is a 1-of-8 high-speed TTL-compatible FET multiplexer/demultiplexer. The low on-state
resistance of the switch allows connections to be made with minimal propagation delay.
When output enable (OE) is low, the SN74CBT3251 is enabled. S0, S1, and S2 select one of the B outputs for
the A-input data.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
QFN − RGY
Tape and reel SN74CBT3251RGYR CU251
SOIC − D
Tube
Tape and reel
SN74CBT3251D
SN74CBT3251DR
CBT3251
−40°C to 85°C SSOP − DB
Tape and reel
SSOP (QSOP) − DBQ Tape and reel
SN74CBT3251DBR CU251
SN74CBT3251DBQR CU251
TSSOP − PW
Tube
Tape and reel
SN74CBT3251PW
SN74CBT3251PWR
CU251
† 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.
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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Copyright  2004, Texas Instruments Incorporated
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