Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Multiplexer, demux FET multiplexer/demultiplexer Single supply TSSOP 16

SN74CBT3251

1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER

SCDS019L − MAY 1995 − REVISED JANUARY 2004

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D 5-Ω Switch Connection Between Two Ports D TTL-Compatible Input Levels

GND

D, DB, DBQ, OR PW PACKAGE

(TOP VIEW)

NC − No internal connection

RGY PACKAGE

(TOP VIEW)

116

GND

NC − No internal connection

description/ordering information

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

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

QFN − RGY Tape and reel SN74CBT3251RGYR CU251

SOIC D

Tube SN74CBT3251D

CBT3251

SOIC − D

Tape and reel SN74CBT3251DR

CBT3251

−40°C to 85°C

SSOP − DB Tape and reel SN74CBT3251DBR CU251

40 C

85 C

SSOP (QSOP) − DBQ Tape and reel SN74CBT3251DBQR CU251

TSSOP PW

Tube SN74CBT3251PW

CU251

TSSOP − PW

Tape and reel SN74CBT3251PWR

CU251

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design

guidelines are available at www.ti.com/sc/package.

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.

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.

Summary of content (19 pages)

PAGE 1
SN74CBT3251 1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER SCDS019L − MAY 1995 − REVISED JANUARY 2004 D 5-Ω Switch Connection Between Two Ports D TTL-Compatible Input Levels D, DB, DBQ, OR PW PACKAGE (TOP VIEW) 3 14 4 13 5 12 6 11 7 10 8 9 VCC B5 B6 B7 B8 S0 S1 S2 B3 B2 B1 A NC OE NC − No internal connection VCC 15 1 16 15 B5 14 B6 2 3 13 B7 12 B8 4 5 11 S0 10 S1 6 7 8 9 S2 16 2 B4 1 GND B4 B3 B2 B1 A NC OE GND RGY PACKAGE (TOP VIEW) NC − No internal connection description/orderi
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SN74CBT3251 1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER SCDS019L − MAY 1995 − REVISED JANUARY 2004 FUNCTION TABLE (each multiplexer/demultiplexer) INPUTS FUNCTION OE S2 S1 S0 L L L L A port = B1 port L L L H A port = B2 port L L H L A port = B3 port L L H H A port = B4 port L H L L A port = B5 port L H L H A port = B6 port L H H L A port = B7 port L H H H A port = B8 port H X X X Disconnect logic diagram (positive logic) 5 4 A B1 3 B2 2 B3 1 B4 15 B5 14 B6 13
PAGE 3
SN74CBT3251 1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER SCDS019L − MAY 1995 − REVISED JANUARY 2004 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.
PAGE 4
SN74CBT3251 1-OF-8 FET MULTIPLEXER/DEMULTIPLEXER SCDS019L − MAY 1995 − REVISED JANUARY 2004 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) VCC = 5 V ± 0.5 V MIN MIN TO (OUTPUT) tpd† A or B B or A tpd S A 6 S B OE A or B S B OE A or B ten tdis † VCC = 4 V FROM (INPUT) PARAMETER MAX UNIT MAX 0.35 0.25 ns 2 5.5 ns 6.4 1.5 5.6 6.4 1.6 5.8 6.8 1.9 6.4 6 2.3 6.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74CBT3251DBR Package Package Pins Type Drawing SSOP SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant DB 16 2000 330.0 16.4 8.2 6.6 2.5 12.0 16.0 Q1 SN74CBT3251DR SOIC D 16 2500 330.0 16.4 6.5 10.3 2.1 8.0 16.0 Q1 SN74CBT3251PWR TSSOP PW 16 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.
PAGE 8
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74CBT3251DBR SSOP DB 16 2000 367.0 367.0 38.0 SN74CBT3251DR SOIC D 16 2500 333.2 345.9 28.6 SN74CBT3251PWR TSSOP PW 16 2000 367.0 367.0 35.0 SN74CBT3251RGYR VQFN RGY 16 3000 367.0 367.0 35.
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MECHANICAL DATA MSSO002E – JANUARY 1995 – REVISED DECEMBER 2001 DB (R-PDSO-G**) PLASTIC SMALL-OUTLINE 28 PINS SHOWN 0,38 0,22 0,65 28 0,15 M 15 0,25 0,09 8,20 7,40 5,60 5,00 Gage Plane 1 14 0,25 A 0°–ā8° 0,95 0,55 Seating Plane 2,00 MAX 0,10 0,05 MIN PINS ** 14 16 20 24 28 30 38 A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90 A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30 DIM 4040065 /E 12/01 NOTES: A. B. C. D. All linear dimensions are in millimeters.
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