SCDS054I − MARCH 1998 − REVISED OCTOBER 2003
D 5-Ω Switch Connection Between Two Ports
D Rail-to-Rail Switching on Data I/O Ports
D Ioff Supports Partial-Power-Down Mode
D Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
Operation
D, DBQ, DGV, OR PW PACKAGE
(TOP VIEW)
15
3
14
4
13
5
12
6
11
7
10
8
9
B3
B2
B1
A
NC
OE
NC − No internal connection
VCC
2
VCC
B5
B6
B7
B8
S0
S1
S2
1
16
15 B5
14 B6
2
3
13 B7
12 B8
4
5
11 S0
10 S1
6
7
8
9
S2
16
B4
1
GND
B4
B3
B2
B1
A
NC
OE
GND
RGY PACKAGE
(TOP VIEW)
NC − No internal connection
description/ordering information
The SN74CBTLV3251 device is a 1-of-8 high-speed FET multiplexer/demultiplexer. The low on-state resistance
of the switch allows connections to be made with minimal propagation delay.
The select inputs (S0, S1, S2) control the data flow. The FET multiplexers/demultiplexers are disabled when
the output-enable (OE) input is high.
This device is fully specified for partial-power-down applications using Ioff. The Ioff feature ensures that
damaging current will not backflow through the device when it is powered down. The device has isolation during
power off.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup
resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
ORDERING INFORMATION
QFN − RGY
TOP-SIDE
MARKING
Tape and reel
SN74CBTLV3251RGYR
Tube
SN74CBTLV3251D
Tape and reel
SN74CBTLV3251DR
SSOP (QSOP) − DBQ
Tape and reel
SN74CBTLV3251DBQR
CL251
TSSOP − PW
Tape and reel
SN74CBTLV3251PWR
CL251
TVSOP − DGV
Tape and reel
SN74CBTLV3251DGVR
CL251
SOIC − D
−40°C to 85°C
ORDERABLE
PART NUMBER
PACKAGE†
TA
CL251
CBTLV3251
† 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.
Copyright 2003, Texas Instruments Incorporated
!"#$%&" ' ()##*& %' "! +),-(%&" .%&*/
#".)(&' ("!"#$ &" '+*(!(%&"' +*# &0* &*#$' "! *1%' '&#)$*&'
'&%.%#. 2%##%&3/ #".)(&" +#"(*''4 ."*' "& *(*''%#-3 (-).*
&*'&4 "! %-- +%#%$*&*#'/
POST OFFICE BOX 655303
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1
SCDS054I − MARCH 1998 − REVISED OCTOBER 2003
FUNCTION TABLE
INPUTS
S1
S0
FUNCTION
OE
S2
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)
A
5
4
SW
3
SW
B1
B2
2
SW
B3
1
B4
SW
15
SW
B5
14
SW
B6
13
B7
SW
12
SW
11
S0
10
S1
9
S2
OE
2
7
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
B8
SCDS054I − MARCH 1998 − REVISED OCTOBER 2003
simplified schematic, each FET switch
A
B
(OE)
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 4.6 V
Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 4.6 V
Continuous channel current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 mA
Input clamp current, IK (VI/O < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 mA
Package thermal impedance, θJA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73°C/W
(see Note 2): DBQ package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90°C/W
(see Note 2): DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120°C/W
(see Note 2): PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108°C/W
(see Note 3): RGY package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39°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.
3. The package thermal impedance is calculated in accordance with JESD 51-5.
recommended operating conditions (see Note 4)
VCC
Supply voltage
VIH
High-level control input voltage
VCC = 2.3 V to 2.7 V
VCC = 2.7 V to 3.6 V
VIL
Low-level control input voltage
VCC = 2.3 V to 2.7 V
VCC = 2.7 V to 3.6 V
MIN
MAX
2.3
3.6
UNIT
V
1.7
V
2
0.7
0.8
V
TA
Operating free-air temperature
−40
85
°C
NOTE 4: 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.
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3
SCDS054I − MARCH 1998 − REVISED OCTOBER 2003
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP†
MAX
UNIT
−1.2
V
VIK
II
VCC = 3 V,
VCC = 3.6 V,
II = −18 mA
VI = VCC or GND
Ioff
ICC
VCC = 0,
VCC = 3.6 V,
VI or VO = 0 to 3.6 V
IO = 0,
VI = VCC or GND
VCC = 3.6 V,
VI = 3 V or 0
One input at 3 V,
VO = 3 V or 0,
OE = VCC
VI = 0
II = 64 mA
II = 24 mA
5
VCC = 2.3 V,
TYP at VCC = 2.5 V
5
8
VI = 1.7 V,
II = 15 mA
27
40
5
7
VI = 0
II = 64 mA
II = 24 mA
5
7
∆ICC‡
Control inputs
Ci
Control inputs
Other inputs at VCC or GND
B port
µA
µA
10
µA
300
µA
3
A port
Cio(OFF)
±1
20
pF
40.5
ron§
VCC = 3 V
pF
6
8
Ω
VI = 2.4 V,
II = 15 mA
10
15
† All typical values are at VCC = 3.3 V (unless otherwise noted), TA = 25°C.
‡ This is the increase in supply current for each input that is at the specified 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.
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 2.5 V
± 0.2 V
MIN
MAX
VCC = 3.3 V
± 0.3 V
MIN
UNIT
MAX
A or B¶
B or A
tpd
S
A
1
6.1
1
5.3
ten
S
B
1
4.1
1
3.6
ns
tdis
S
B
1
3.5
1
3.3
ns
ten
OE
A or B
1
5.2
1
4.5
ns
tdis
OE
A or B
1
6.7
1
7.2
ns
0.15
0.25
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).
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
SCDS054I − MARCH 1998 − REVISED OCTOBER 2003
PARAMETER MEASUREMENT INFORMATION
2 × VCC
RL
From Output
Under Test
S1
Open
GND
CL
(see Note A)
TEST
S1
tPLH/tPHL
tPLZ/tPZL
tPHZ/tPZH
Open
2 × VCC
GND
RL
LOAD CIRCUIT
VCC
CL
RL
V∆
2.5 V ±0.2 V
3.3 V ±0.3 V
30 pF
50 pF
500 Ω
500 Ω
0.15 V
0.3 V
VCC
Timing Input
VCC/2
0V
tw
tsu
VCC
VCC/2
Input
VCC/2
th
VCC
VCC/2
Data Input
VCC/2
0V
0V
VOLTAGE WAVEFORMS
PULSE DURATION
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VCC
VCC/2
Input
VCC/2
0V
tPHL
tPLH
VOH
VCC/2
Output
VCC/2
VOL
VOH
Output
Output
Waveform 1
S1 at 2 × VCC
(see Note B)
tPLH
tPHL
VCC/2
VCC/2
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
VCC
Output
Control
Output
Waveform 2
S1 at GND
(see Note B)
VCC/2
VCC/2
0V
tPLZ
tPZL
VCC
VCC/2
VOL + V∆
VOL
tPHZ
tPZH
VCC/2
VOH − V∆
VOH
≈0 V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
LOW- AND HIGH-LEVEL ENABLING
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 ns, tf ≤ 2 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.
H. All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
PACKAGE OPTION ADDENDUM
www.ti.com
24-May-2007
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
74CBTLV3251DBQRE4
ACTIVE
SSOP/
QSOP
DBQ
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
74CBTLV3251DBQRG4
ACTIVE
SSOP/
QSOP
DBQ
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
74CBTLV3251DGVRE4
ACTIVE
TVSOP
DGV
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
74CBTLV3251DGVRG4
ACTIVE
TVSOP
DGV
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
74CBTLV3251PWRE4
ACTIVE
TSSOP
PW
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
74CBTLV3251PWRG4
ACTIVE
TSSOP
PW
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
74CBTLV3251RGYRG4
ACTIVE
QFN
RGY
16
1000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
SN74CBTLV3251D
ACTIVE
SOIC
D
16
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CBTLV3251DBQR
ACTIVE
SSOP/
QSOP
DBQ
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
SN74CBTLV3251DE4
ACTIVE
SOIC
D
16
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CBTLV3251DG4
ACTIVE
SOIC
D
16
40
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CBTLV3251DGVR
ACTIVE
TVSOP
DGV
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CBTLV3251DR
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CBTLV3251DRE4
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CBTLV3251DRG4
ACTIVE
SOIC
D
16
2500 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CBTLV3251PWR
ACTIVE
TSSOP
PW
16
2000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CBTLV3251RGYR
ACTIVE
QFN
RGY
16
1000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-2-260C-1 YEAR
40
Lead/Ball Finish
MSL Peak Temp (3)
(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
Addendum-Page 1
PACKAGE OPTION ADDENDUM
www.ti.com
24-May-2007
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
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.
Addendum-Page 2
PACKAGE MATERIALS INFORMATION
www.ti.com
4-Oct-2007
TAPE AND REEL BOX INFORMATION
Device
Package Pins
Site
Reel
Diameter
(mm)
Reel
Width
(mm)
A0 (mm)
B0 (mm)
K0 (mm)
P1
(mm)
W
Pin1
(mm) Quadrant
SN74CBTLV3251DBQR
DBQ
16
SITE 27
330
0
6.4
5.2
2.1
8
12
Q1
SN74CBTLV3251DGVR
DGV
16
SITE 41
330
12
6.8
4.0
1.6
8
16
Q1
SN74CBTLV3251DR
D
16
SITE 27
330
16
6.5
10.3
2.1
8
16
Q1
SN74CBTLV3251PWR
PW
16
SITE 41
330
12
7.0
5.6
1.6
8
12
Q1
SN74CBTLV3251RGYR
RGY
16
SITE 41
180
12
3.8
4.3
1.5
8
12
Q1
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
4-Oct-2007
Device
Package
Pins
Site
Length (mm)
Width (mm)
Height (mm)
SN74CBTLV3251DBQR
DBQ
16
SITE 27
342.9
336.6
20.64
SN74CBTLV3251DGVR
DGV
16
SITE 41
346.0
346.0
29.0
28.58
SN74CBTLV3251DR
D
16
SITE 27
342.9
336.6
SN74CBTLV3251PWR
PW
16
SITE 41
346.0
346.0
29.0
SN74CBTLV3251RGYR
RGY
16
SITE 41
190.0
212.7
31.75
Pack Materials-Page 2
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.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion, not to exceed 0,15 per side.
Falls within JEDEC: 24/48 Pins – MO-153
14/16/20/56 Pins – MO-194
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
0,65
14
0,10 M
8
0,15 NOM
4,50
4,30
6,60
6,20
Gage Plane
0,25
1
7
0°– 8°
A
0,75
0,50
Seating Plane
0,15
0,05
1,20 MAX
PINS **
0,10
8
14
16
20
24
28
A MAX
3,10
5,10
5,10
6,60
7,90
9,80
A MIN
2,90
4,90
4,90
6,40
7,70
9,60
DIM
4040064/F 01/97
NOTES: A.
B.
C.
D.
All linear dimensions are in millimeters.
This drawing is subject to change without notice.
Body dimensions do not include mold flash or protrusion not to exceed 0,15.
Falls within JEDEC MO-153
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
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non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements.
Following are URLs where you can obtain information on other Texas Instruments products and application solutions:
Products
Applications
Amplifiers
amplifier.ti.com
Audio
www.ti.com/audio
Data Converters
dataconverter.ti.com
Automotive
www.ti.com/automotive
DSP
dsp.ti.com
Broadband
www.ti.com/broadband
Interface
interface.ti.com
Digital Control
www.ti.com/digitalcontrol
Logic
logic.ti.com
Military
www.ti.com/military
Power Mgmt
power.ti.com
Optical Networking
www.ti.com/opticalnetwork
Microcontrollers
microcontroller.ti.com
Security
www.ti.com/security
RFID
www.ti-rfid.com
Telephony
www.ti.com/telephony
Low Power
Wireless
www.ti.com/lpw
Video & Imaging
www.ti.com/video
Wireless
www.ti.com/wireless
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