SN74CBT3306
DUAL FET BUS SWITCH
SCDS016H − MAY 1995 − REVISED JANUARY 2004
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D5-Ω Switch Connection Between Two Ports
DTTL-Compatible Input Levels
description/ordering information
The SN74CBT3306 dual FET bus switch features
independent line switches. Each switch is
disabled when the associated output-enable (OE)
input is high.
ORDERING INFORMATION
TAPACKAGE†ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
SOIC D
Tube SN74CBT3306D
CU306
40°Cto85°C
SOIC − D Tape and reel SN74CBT3306DR CU306
−40°C to 85°C
TSSOP PW
Tube SN74CBT3306PW
CU306
TSSOP − PW Tape and reel SN74CBT3306PWR CU306
†Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines
are available at www.ti.com/sc/package.
FUNCTION TABLE
(each bus switch)
INPUT
OE FUNCTION
LA port = B port
H Disconnect
logic diagram (positive logic)
1OE
1B
1A
2OE
2B
2A
2
1
5
7
3
6
D OR PW PACKAGE
(TOP VIEW)
1
2
3
4
8
7
6
5
1OE
1A
1B
GND
VCC
2OE
2B
2A
Copyright © 2004, Texas Instruments Incorporated
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.
SN74CBT3306
DUAL FET BUS SWITCH
SCDS016H − MAY 1995 − REVISED JANUARY 2004
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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 128 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, IK (VI/O < 0) −50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θJA (see Note 2): D package 97°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package 149°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg −65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
MIN MAX UNIT
VCC Supply voltage 4 5.5 V
VIH High-level control input voltage 2 V
VIL Low-level control input voltage 0.8 V
TAOperating free-air temperature −40 85 °C
NOTE 3: All unused control inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP‡MAX UNIT
VIK VCC = 4.5 V, II = −18 mA −1.2 V
IIVCC = 5.5 V, VI = 5.5 V or GND ±1μA
ICC VCC = 5.5 V, IO = 0, VI = VCC or GND 3μA
ΔICC§Control inputs VCC = 5.5 V, One input at 3.4 V, Other inputs at VCC or GND 2.5 mA
CiControl inputs VI = 3 V or 0 3 pF
Cio(OFF) VO = 3 V or 0, OE = VCC 4 pF
VCC = 4 V,
TYP at VCC = 4 V VI = 2.4 V, II = 15 mA 14 20
ron¶
V 0
II = 64 mA 5 7 Ω
ron¶
VCC = 4.5 V VI = 0 II = 30 mA 5 7
Ω
CC
VI = 2.4 V, II = 15 mA 10 15
‡All typical values are at VCC = 5 V (unless otherwise noted), TA = 25°C.
§This is the increase in supply current for each input that is at the specified TTL voltage level, rather than VCC or GND.
¶Measured by the voltage drop between the A and the B terminals at the indicated current through the switch. On-state resistance is determined
by the lower of the voltages of the two (A or B) terminals.
SN74CBT3306
DUAL FET BUS SWITCH
SCDS016H − MAY 1995 − REVISED JANUARY 2004
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range, CL = 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER FROM
(INPUT)
TO
(OUTPUT)
VCC = 4 V VCC = 5 V
± 0.5 V UNIT
PARAMETER
(INPUT) (OUTPUT) MIN MAX MIN MAX
UNIT
tpd†A or B B or A 0.35 0.25 ns
ten OE A or B 5.6 1.8 5 ns
tdis OE A or B 4.6 1 4.3 ns
†The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance, when
driven by an ideal voltage source (zero output impedance).
PARAMETER MEASUREMENT INFORMATION
VOH
VOL
From Output
Under Test
CL = 50 pF
(see Note A)
LOAD CIRCUIT
S1
7 V
Open
GND
500 Ω
500 Ω
tPLH tPHL
Output
Waveform 1
S1 at 7 V
(see Note B)
Output
Waveform 2
S1 at Open
(see Note B)
tPZL
tPZH
tPLZ
tPHZ
1.5 V 1.5 V
3 V
0 V
1.5 V 1.5 V
VOH
VOL
1.5 V VOL + 0.3 V
1.5 V VOH − 0.3 V
0 V
Input
3.5 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
Output
tpd
tPLZ/tPZL
tPHZ/tPZH
Open
7 V
Open
TEST S1
NOTES: A. CL includes probe and jig capacitance.
B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.
D. The outputs are measured one at a time with one transition per measurement.
E. tPLZ and tPHZ are the same as tdis.
F. tPZL and tPZH are the same as ten.
G. tPLH and tPHL are the same as tpd.
3 V
Output
Control 0 V
1.5 V 1.5 V
Figure 1. Load Circuit and Voltage Waveforms
PACKAGING INFORMATION
Orderable Device Status (1) Package
Type Package
Drawing Pins Package
Qty Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
SN74CBT3306D ACTIVE SOIC D 8 75 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306DE4 ACTIVE SOIC D 8 75 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306DG4 ACTIVE SOIC D 8 75 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306DR ACTIVE SOIC D 8 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306DRE4 ACTIVE SOIC D 8 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306DRG4 ACTIVE SOIC D 8 2500 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306PW ACTIVE TSSOP PW 8 150 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306PWE4 ACTIVE TSSOP PW 8 150 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306PWG4 ACTIVE TSSOP PW 8 150 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306PWLE OBSOLETE TSSOP PW 8 TBD Call TI Call TI
SN74CBT3306PWR ACTIVE TSSOP PW 8 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306PWRE4 ACTIVE TSSOP PW 8 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
SN74CBT3306PWRG3 PREVIEW TSSOP PW 8 2000 TBD Call TI Call TI
SN74CBT3306PWRG4 ACTIVE TSSOP PW 8 2000 Green (RoHS &
no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check
http://www.ti.com/productcontent for the latest availability information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
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.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and
package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS
compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame
retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
PACKAGE OPTION ADDENDUM
www.ti.com 15-Mar-2010
Addendum-Page 1
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
PACKAGE OPTION ADDENDUM
www.ti.com 15-Mar-2010
Addendum-Page 2
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device Package
Type Package
Drawing Pins SPQ Reel
Diameter
(mm)
Reel
Width
W1 (mm)
A0
(mm) B0
(mm) K0
(mm) P1
(mm) W
(mm) Pin1
Quadrant
SN74CBT3306DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
SN74CBT3306DR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1
SN74CBT3306PWR TSSOP PW 8 2000 330.0 12.4 7.0 3.6 1.6 8.0 12.0 Q1
SN74CBT3306PWR TSSOP PW 8 2000 330.0 12.4 7.0 3.6 1.6 8.0 12.0 Q1
SN74CBT3306PWRG4 TSSOP PW 8 2000 330.0 12.4 7.0 3.6 1.6 8.0 12.0 Q1
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 1
*All dimensions are nominal
Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm)
SN74CBT3306DR SOIC D 8 2500 367.0 367.0 35.0
SN74CBT3306DR SOIC D 8 2500 340.5 338.1 20.6
SN74CBT3306PWR TSSOP PW 8 2000 367.0 367.0 35.0
SN74CBT3306PWR TSSOP PW 8 2000 364.0 364.0 27.0
SN74CBT3306PWRG4 TSSOP PW 8 2000 367.0 367.0 35.0
PACKAGE MATERIALS INFORMATION
www.ti.com 14-Jul-2012
Pack Materials-Page 2
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