Datasheet

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SN74CBT3245A

OCTAL FET BUS SWITCH

SCDS002Q − NOVEMBER 1992 − REVISED DECEMBER 2004

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

D Standard ’245-Type Pinout

D 5-Ω Switch Connection Between Two Ports

D TTL-Compatible Input Levels

GND

DB, DBQ, DGV, DW, OR PW PACKAGE

(TOP VIEW)

NC − No internal connection

RGY PACKAGE

(TOP VIEW)

120

10 11

GND

NC − No internal connection

terminal assignments

1234

A A1 NC V

B A3 B2 A2 B1

C A5 A4 B4 B3

D A7 B6 A6 B5

E GND A8 B8 B7

NC − No internal connection

description/ordering information

The SN74CBT3245A provides eight bits of high-speed TTL-compatible bus switching. The SOIC, SSOP,

TSSOP, and TVSOP packages provide a standard ’245 device pinout. The low on-state resistance of the switch

allows connections to be made with minimal propagation delay.

The device is organized as one 8-bit switch. When the output-enable (OE

) input is low, the switch is on, and

port A is connected to port B. When OE

is high, the switch is open, and the high-impedance state exists between

the two ports.

To ensure the high-impedance state during power up or power down, OE

should be tied to V

through a pullup

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

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.

GQN OR ZQN PACKAGE

(TOP VIEW)

1234

Summary of content (22 pages)

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SN74CBT3245A OCTAL FET BUS SWITCH SCDS002Q − NOVEMBER 1992 − REVISED DECEMBER 2004 D Standard ’245-Type Pinout D 5-Ω Switch Connection Between Two Ports D TTL-Compatible Input Levels 19 3 18 4 17 5 16 6 15 7 14 8 13 9 12 10 11 VCC OE B1 B2 B3 B4 B5 B6 B7 B8 A1 A2 A3 A4 A5 A6 A7 A8 VCC 20 2 1 20 19 OE 18 B1 2 3 17 B2 16 B3 4 5 15 B4 14 B5 6 7 13 B6 12 B7 8 9 NC − No internal connection 10 11 B8 1 GND NC A1 A2 A3 A4 A5 A6 A7 A8 GND NC RGY PACKAGE (TOP VIEW) DB, DBQ,
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SN74CBT3245A OCTAL FET BUS SWITCH SCDS002Q − NOVEMBER 1992 − REVISED DECEMBER 2004 description/ordering information (continued) ORDERING INFORMATION QFN − RGY SN74CBT3245ARGYR Tube SN74CBT3245ADW Tape and reel SN74CBT3245ADWR SSOP − DB Tape and reel SN74CBT3245ADBR CU245A SSOP (QSOP) − DBQ Tape and reel SN74CBT3245ADBQR CBT3245A Tube SN74CBT3245APW Tape and reel SN74CBT3245APWR Tape and reel SN74CBT3245ADGVR TSSOP − PW TVSOP − DGV VFBGA − GQN Tape and reel VFBGA − ZQN (Pb-free) † SN
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SN74CBT3245A OCTAL FET BUS SWITCH SCDS002Q − NOVEMBER 1992 − REVISED DECEMBER 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) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V Continuous channel current .
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SN74CBT3245A OCTAL FET BUS SWITCH SCDS002Q − NOVEMBER 1992 − REVISED DECEMBER 2004 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) † VCC = 4 V VCC = 5 V ± 0.5 V MIN MIN FROM (INPUT) TO (OUTPUT) tpd† A or B B or A 0.35 0.25 ns ten OE A or B 6.4 1.9 5.9 ns tdis OE A or B 5.7 2.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
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PACKAGE MATERIALS INFORMATION www.ti.com 8-Jul-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74CBT3245ADBQR 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 DBQ 20 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 SN74CBT3245ADBR SSOP DB 20 2000 330.0 16.4 8.2 7.5 2.5 12.0 16.0 Q1 SN74CBT3245ADGVR TVSOP DGV 20 2000 330.0 12.4 6.9 5.6 1.6 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 8-Jul-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74CBT3245ADBQR SSOP DBQ 20 2500 367.0 367.0 38.0 SN74CBT3245ADBR SSOP DB 20 2000 367.0 367.0 38.0 SN74CBT3245ADGVR TVSOP DGV 20 2000 367.0 367.0 35.0 SN74CBT3245ADWR SOIC DW 20 2000 367.0 367.0 45.0 SN74CBT3245APWR TSSOP PW 20 2000 367.0 367.0 38.0 SN74CBT3245ARGYR VQFN RGY 20 3000 367.0 367.
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MECHANICAL DATA MPDS006C – FEBRUARY 1996 – REVISED AUGUST 2000 DGV (R-PDSO-G**) PLASTIC SMALL-OUTLINE 24 PINS SHOWN 0,40 0,23 0,13 24 13 0,07 M 0,16 NOM 4,50 4,30 6,60 6,20 Gage Plane 0,25 0°– 8° 1 0,75 0,50 12 A Seating Plane 0,15 0,05 1,20 MAX PINS ** 0,08 14 16 20 24 38 48 56 A MAX 3,70 3,70 5,10 5,10 7,90 9,80 11,40 A MIN 3,50 3,50 4,90 4,90 7,70 9,60 11,20 DIM 4073251/E 08/00 NOTES: A. B. C. D. All linear dimensions are in millimeters.
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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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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.