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SN74CBT6800A

10-BIT FET BUS SWITCH

WITH PRECHARGED OUTPUTS

SCDS005N – MARCH 1993 – REVISED MARCH 2001

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

5-Ω Switch Connection Between Two Ports

TTL-Compatible Input Levels

Outputs Are Precharged by Bias Voltage to

Minimize Signal Distortion During Live

Insertion

description

The SN74CBT6800A provides ten bits of

high-speed TTL-compatible bus switching. The

low on-state resistance of the switch allows

bidirectional connections to be made while adding

near-zero propagation delay. The device also

precharges the B port to a user-selectable

bias voltage (BIASV) to minimize live-insertion

noise.

The SN74CBT6800A is organized as one 10-bit switch with a single enable (ON

) input. When ON is low, the

switch is on, and port A is connected to port B. When ON

is high, the switch between port A and port B is open.

When ON

is high or V

is 0 V, B port is precharged to BIASV through the equivalent of a 10-kΩ resistor.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

SOIC DW

Tube SN74CBT6800ADW

CBT6800A

SOIC

–

Tape and reel SN74CBT6800ADWR

CBT6800A

40°Cto85°C

SSOP – DB Tape and reel SN74CBT6800ADBR CT6800A

–

40°C

85°C

SSOP (QSOP) – DBQ Tape and reel SN74CBT6800ADBQR CBT6800A

TSSOP – PW Tape and reel SN74CBT6800APWR CT6800A

TVSOP – DGV Tape and reel SN74CBT6800ADGVR CT6800A

†

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

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

FUNCTION TABLE

INPUT

FUNCTION

L A port = B port

A port = Z

B port = BIASV

DB, DBQ, DGV, DW, OR PW PACKAGE

(TOP VIEW)

A10

GND

B10

BIASV

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 (14 pages)

PAGE 1
SN74CBT6800A 10-BIT FET BUS SWITCH WITH PRECHARGED OUTPUTS SCDS005N – MARCH 1993 – REVISED MARCH 2001 D D D DB, DBQ, DGV, DW, OR PW PACKAGE (TOP VIEW) 5-Ω Switch Connection Between Two Ports TTL-Compatible Input Levels Outputs Are Precharged by Bias Voltage to Minimize Signal Distortion During Live Insertion ON A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 GND description The SN74CBT6800A provides ten bits of high-speed TTL-compatible bus switching.
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SN74CBT6800A 10-BIT FET BUS SWITCH WITH PRECHARGED OUTPUTS SCDS005N – MARCH 1993 – REVISED MARCH 2001 logic diagram (positive logic) 13 BIASV 2 23 A1 B1 11 14 A10 B10 1 ON absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Bias voltage range, BIASV . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 3
SN74CBT6800A 10-BIT FET BUS SWITCH WITH PRECHARGED OUTPUTS SCDS005N – MARCH 1993 – REVISED MARCH 2001 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VIK II VCC = 4.5 V, VCC = 5.5 V, II = –18 mA VI = 5.5 V or GND IO ICC VCC = 4.5 V, VCC = 5.5 V, BIASV = 2.4 V, ∆ICC‡ Control inputs Ci Control inputs Co(OFF) VCC = 5.5 V, VI = 3 V or 0 MIN TYP† MAX UNIT –1.2 V ±5 IO = 0, One input at 3.
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SN74CBT6800A 10-BIT FET BUS SWITCH WITH PRECHARGED OUTPUTS SCDS005N – MARCH 1993 – REVISED MARCH 2001 PARAMETER MEASUREMENT INFORMATION 7V 500 Ω From Output Under Test S1 Open GND CL = 50 pF (see Note A) 500 Ω TEST S1 tpd tPLZ/tPZL tPHZ/tPZH Open 7V Open Output Control (low-level enabling) LOAD CIRCUIT 3V 1.5 V 1.5 V 0V tPZL 3V Input 1.5 V 1.5 V 0V tPLH 1.5 V tPLZ 3.5 V 1.5 V tPZH tPHL VOH Output Output Waveform 1 S1 at 7 V (see Note B) 1.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
PAGE 7
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74CBT6800ADBQR Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant SSOP DBQ 24 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 SN74CBT6800ADWR SOIC DW 24 2000 330.0 24.4 10.75 15.7 2.7 12.0 24.0 Q1 SN74CBT6800APWR TSSOP PW 24 2000 330.0 16.4 6.95 8.3 1.6 8.0 16.
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) SN74CBT6800ADBQR SSOP DBQ 24 2500 367.0 367.0 38.0 SN74CBT6800ADWR SOIC DW 24 2000 367.0 367.0 45.0 SN74CBT6800APWR TSSOP PW 24 2000 367.0 367.0 38.
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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.