SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
D Member of the Texas Instruments
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
DGG, DGV, OR DL PACKAGE
(TOP VIEW)
Widebus Family
Output Voltage Translation Tracks VCC
Supports Mixed-Mode Signal Operation On
All Data I/O Ports
− 5-V Input Down to 3.3-V Output Level
Shift, With 3.3-V VCC
− 5-V/3.3-V Input Down to 2.5-V Output
Level Shift, With 2.5-V VCC
5-V-Tolerant I/Os, With Device Powered Up
or Powered Down
Bidirectional Data Flow, With Near-Zero
Propagation Delay
Low ON-State Resistance (ron)
Characteristics (ron = 5 Ω Typical)
Low Input/Output Capacitance Minimizes
Loading (Cio(OFF) = 5 pF Typical)
Data and Control Inputs Provide
Undershoot Clamp Diodes
Low Power Consumption
(ICC = 70 µA Max)
VCC Operating Range From 2.3 V to 3.6 V
Data I/Os Support 0- to 5-V Signaling
Levels (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V,
5 V)
Control Inputs Can be Driven by TTL or
5-V/3.3-V CMOS Outputs
Ioff Supports Partial-Power-Down Mode
Operation
Latch-Up Performance Exceeds 250 mA Per
JESD 17
ESD Performance Tested Per JESD 22
− 2000-V Human-Body Model
(A114-B, Class II)
− 1000-V Charged-Device Model (C101)
Supports Digital Applications: Level
Translation, PCI Interface, Bus Isolation
Ideal for Low-Power Portable Equipment
NC
1A1
1A2
1A3
1A4
1A5
1A6
GND
1A7
1A8
1A9
1A10
1A11
1A12
2A1
2A2
VCC
2A3
GND
2A4
2A5
2A6
2A7
2A8
2A9
2A10
2A11
2A12
1
56
2
55
3
54
4
53
5
52
6
51
7
50
8
49
9
48
10
47
11
46
12
45
13
44
14
43
15
42
16
41
17
40
18
39
19
38
20
37
21
36
22
35
23
34
24
33
25
32
26
31
27
30
28
29
1OE
2OE
1B1
1B2
1B3
1B4
1B5
GND
1B6
1B7
1B8
1B9
1B10
1B11
1B12
2B1
2B2
2B3
GND
2B4
2B5
2B6
2B7
2B8
2B9
2B10
2B11
2B12
NC − No internal connection
description/ordering information
The SN74CB3T16211 is a high-speed TTL-compatible FET bus switch with low ON-state resistance (ron),
allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data I/O
ports by providing voltage translation that tracks VCC. The SN74CB3T16211 supports systems using 5-V TTL,
3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels (see Figure 1).
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.
Widebus is a trademark of Texas Instruments.
Copyright 2005, Texas Instruments Incorporated
!"#$%&" ' ()##*& %' "! +),-(%&" .%&*
#".)(&' ("!"#$ &" '+*(!(%&"' +*# &/* &*#$' "! *0%' '&#)$*&'
'&%.%#. 1%##%&2 #".)(&" +#"(*''3 ."*' "& *(*''%#-2 (-).*
&*'&3 "! %-- +%#%$*&*#'
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1
SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
description/ordering information (continued)
VCC
5.5 V
VCC
IN
≈VCC − 1 V
≈VCC
OUT
≈VCC − 1 V
CB3T
0V
0V
Input Voltages
Output Voltages
NOTE A: If the input high-voltage (VIH) level is greater than or equal to VCC − 1 V and less than or equal to 5.5 V, the output high-voltage (VOH)
level is equal to approximately the VCC voltage level.
Figure 1. Typical DC Voltage-Translation Characteristics
The I/O port of this device has a pullup current source that maintains the output voltage at VCC when the device
is ON and the input is greater than or equal to VCC − 1. Because of the pullup current source, the output voltage
level may be less than VCC when the operating frequency is low and the I/O port is connected to a pulldown
resistor. In order to maintain the output voltage at VCC, a pullup resistor must be connected to VCC, instead of
a pulldown resistor to ground.
The SN74CB3T16211 is organized as two 12-bit bus switches with separate output-enable (1OE, 2OE) inputs.
It can be used as two 12-bit bus switches or as one 24-bit bus switch. When OE is low, the associated 12-bit
bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When
OE is high, the associated 12-bit bus switch is OFF, and a high-impedance state exists between the A and B
ports.
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
TA
TOP-SIDE
MARKING
Tube
SN74CB3T16211DL
Tape and reel
SN74CB3T16211DLR
Tube
SN74CB3T16211DGG
Tape and reel
SN74CB3T16211DGGR
TVSOP − DGV
Tape and reel
SN74CB3T16211DGVR
KR211
VFBGA − ZQL
(PB-Free)
Tape and reel
SN74CB3T16211ZQLR
KR211
SSOP − DL
−40°C
−40
C to 85
85°C
C
ORDERABLE
PART NUMBER
PACKAGE†
TSSOP − DGG
CB3T16211
CB3T16211
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design
guidelines are available at www.ti.com/sc/package.
2
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SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
ZQL PACKAGE
(TOP VIEW)
1
2
3
4
5
terminal assignments
6
A
B
C
D
E
F
1
2
3
4
5
6
A
1A2
1A1
NC
1OE
2OE
1B1
B
1A5
1A4
1A3
1B2
1B3
1B4
C
1A7
GND
1A6
1B5
GND
1B6
D
1A10
1A8
1A9
1B8
1B7
1B9
E
1A12
1A11
1B10
1B11
F
2A1
2A2
2B1
1B12
G
GND
2A3
2B3
GND
2B2
H
VCC
2A4
2A5
2A6
2B6
2B5
2B4
H
J
2A7
2A8
2A9
2B9
2B8
2B7
J
K
2A10
2A11
2A12
2B12
2B11
2B10
G
K
NC − No internal connection
FUNCTION TABLE
(each 12-bit bus switch)
INPUT
OE
INPUT/OUTPUT
A
FUNCTION
L
B
A port = B port
H
Z
Disconnect
logic diagram (positive logic)
54
2
1A1
1B1
SW
42
14
1A12
1B12
SW
56
1OE
15
2A1
41
2B1
SW
28
2A12
29
SW
2B12
55
2OE
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3
SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
simplified schematic, each FET switch (SW)
A
B
VG†
Control
Circuit
EN‡
† Gate voltage (VG) is equal to approximately VCC + VT when the switch is ON and VI > VCC + VT.
‡ Internal enable signal applied to the switch
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Control input voltage range, VIN (see Notes 1 and 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Switch I/O voltage range, VI/O (see Notes 1, 2, and 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.5 V to 7 V
Control input clamp current, IIK (VIN < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 mA
I/O port clamp current, II/OK (VI/O < 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −50 mA
ON-state switch current, II/O (see Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±128 mA
Continuous current through VCC or GND terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±100 mA
Package thermal impedance, θJA (see Note 5): DGG package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°C/W
DGV package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48°C/W
DL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56°C/W
ZQL package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42°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. All voltages are with respect to ground, unless otherwise specified.
2. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
3. VI and VO are used to denote specific conditions for VI/O.
4. II and IO are used to denote specific conditions for II/O.
5. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 6)
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
VI/O
TA
Data input/output voltage
Operating free-air temperature
MIN
MAX
UNIT
2.3
3.6
1.7
5.5
V
2
5.5
0
0.7
0
0.8
0
5.5
V
−40
85
°C
V
V
NOTE 6: 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.
4
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SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VIK
VCC = 3 V,
II = −18 mA
VOH
See Figures 3 and 4
IIN
Control
inputs
IOZ‡
VCC = 3.6 V,
VO = 0 to 5.5 V,
VI = 0,
Switch OFF,
VIN = VCC or GND
Ioff
VCC = 0,
VO = 0 to 5.5 V,
VI = 0
ICC
∆ICC§
Control
inputs
Cin
Control
inputs
TYP†
VCC = 3.6 V,
VIN = 3.6 V to 5.5 V or GND
VCC = 3.6 V,
Switch ON,
VIN = VCC or GND
II
MIN
VCC = 3.6 V,
II/O = 0,
Switch ON or OFF,
VIN = VCC or GND
VCC = 3 V to 3.6 V,
One input at VCC − 0.6 V,
Other inputs at VCC or GND
MAX
UNIT
−1.2
V
±10
µA
±20
VI = VCC − 0.7 V to 5.5 V
VI = 0.7 V to VCC − 0.7 V
−40
µA
±5
VI = 0 to 0.7 V
±10
µA
10
µA
VI = VCC or GND
70
VI = 5.5 V
70
A
µA
300
µA
VCC = 3.3 V,
VIN = VCC or GND
4
pF
Cio(OFF)
VCC = 3.3 V,
VI/O = 5.5 V, 3.3 V, or GND,
Switch OFF,
VIN = VCC or GND
5
pF
VCC = 3.3 V,
Switch ON,
VIN = VCC or GND
VI/O = 5.5 V or 3.3 V
Cio(ON)
VI/O = GND
13
VCC = 2.3 V,
TYP at VCC = 2.5 V,
VI = 0
IO = 24 mA
5
9.5
IO = 16 mA
5
9.5
VCC = 3 V,
VI = 0
IO = 64 mA
IO = 32 mA
5
8.5
5
8.5
ron¶
5
pF
Ω
VIN and IIN refer to control inputs. VI, VO, II, and IO refer to data pins.
† All typical values are at VCC = 3.3 V (unless otherwise noted), TA = 25°C.
‡ For I/O ports, the parameter IOZ includes the input leakage current.
§ 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 A and 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.
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SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figure 2)
PARAMETER
tpd†
ten
FROM
(INPUT)
TO
(OUTPUT)
A or B
B or A
OE
A or B
VCC = 2.5 V
± 0.2 V
MIN
MAX
VCC = 3.3 V
± 0.3 V
MIN
0.15
1
12
1
UNIT
MAX
0.25
ns
10
ns
tdis
OE
A or B
1
7.5
1
8.5
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).
6
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SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
PARAMETER MEASUREMENT INFORMATION
VCC
Input Generator
VIN
50 Ω
50 Ω
VG1
TEST CIRCUIT
DUT
Input Generator
VI
S1
RL
VO
50 Ω
VG2
CL
(see Note A)
RL
TEST
VCC
S1
RL
VI
CL
tpd(s)
2.5 V ± 0.2 V
3.3 V ± 0.3 V
Open
Open
500 Ω
500 Ω
3.6 V or GND
5.5 V or GND
30 pF
50 pF
tPLZ/tPZL
2.5 V ± 0.2 V
3.3 V ± 0.3 V
2 × VCC
2 × VCC
500 Ω
500 Ω
GND
GND
30 pF
50 pF
0.15 V
0.3 V
tPHZ/tPZH
2.5 V ± 0.2 V
3.3 V ± 0.3 V
Open
Open
500 Ω
500 Ω
3.6 V
5.5 V
30 pF
50 pF
0.15 V
0.3 V
Output
Control
(VIN)
V∆
VCC
VCC/2
VCC
VCC/2
0V
tPLH
VOH
Output
VCC/2
Output
Waveform 1
S1 at 2 × VCC
(see Note B)
tPLZ
VCC
VCC/2
tPZH
tPHL
VCC/2
VOL
VCC/2
0V
tPZL
VCC/2
Open
GND
50 Ω
Output
Control
(VIN)
2 × VCC
Output
Waveform 2
S1 at Open
(see Note B)
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES (tpd(s))
VOL + V∆
VOL
tPHZ
VCC/2
VOH − V∆
VOH
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
NOTES: B. CL includes probe and jig capacitance.
C. 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.
D. 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.
E. The outputs are measured one at a time, with one transition per measurement.
F. tPLZ and tPHZ are the same as tdis.
G. tPZL and tPZH are the same as ten.
H. tPLH and tPHL are the same as tpd(s). The tpd 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).
I. All parameters and waveforms are not applicable to all devices.
Figure 2. Test Circuit and Voltage Waveforms
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7
SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE
vs
INPUT VOLTAGE
OUTPUT VOLTAGE
vs
INPUT VOLTAGE
4
VCC = 2.3 V
IO = 1 µA
TA = 25°C
3
VO – Output Voltage – V
VO – Output Voltage – V
4
2
1
0
VCC = 3 V
IO = 1 µA
TA = 25°C
3
2
1
0
0
1
2
3
4
5
6
0
VI − Input Voltage − V
1
2
VI − Input Voltage − V
Figure 3. Data Output Voltage vs Data Input Voltage
8
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4
5
6
SCDS147B − OCTOBER 2003 − REVISED JANUARY 2005
TYPICAL CHARACTERISTICS
OUTPUT VOLTAGE HIGH
vs
SUPPLY VOLTAGE
VOH – Output Voltage High – V
3.5
4
VCC = 2.3 V to 3.6 V
VI = 5.5 V
TA = 85°C
100 µA
8 mA
16 mA
24 mA
3
2.5
2
1.5
2.3
3.5
VCC = 2.3 V to 3.6 V
VI = 5.5 V
TA = 25°C
100 µA
8 mA
16 mA
24 mA
3
2.5
2
1.5
2.5
2.7
2.9
3.1
3.3
3.5
3.7
2.3
2.5
VCC − Supply Voltage − V
2.7
2.9
3.1
3.3
3.5
3.7
VCC − Supply Voltage − V
OUTPUT VOLTAGE HIGH
vs
SUPPLY VOLTAGE
4
VOH – Output Voltage High – V
VOH – Output Voltage High – V
4
OUTPUT VOLTAGE HIGH
vs
SUPPLY VOLTAGE
3.5
VCC = 2.3 V to 3.6 V
VI = 5.5 V
TA = −40°C
100 µA
8 mA
16 mA
24 mA
3
2.5
2
1.5
2.3
2.5
2.7
2.9
3.1
3.3
3.5
3.7
VCC − Supply Voltage − V
Figure 4. VOH Values
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9
PACKAGE OPTION ADDENDUM
www.ti.com
2-Jun-2005
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
74CB3T16211DGGRE4
ACTIVE
TSSOP
DGG
56
2000
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
74CB3T16211DGVRE4
ACTIVE
TVSOP
DGV
56
2000
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
SN74CB3T16211DGG
PREVIEW
TSSOP
DGG
56
35
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
SN74CB3T16211DGGR
ACTIVE
TSSOP
DGG
56
2000
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
SN74CB3T16211DGVR
ACTIVE
TVSOP
DGV
56
2000
Pb-Free
(RoHS)
CU NIPDAU
Level-1-250C-UNLIM
SN74CB3T16211DL
ACTIVE
SSOP
DL
56
20
Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CB3T16211DLR
ACTIVE
SSOP
DL
56
1000 Green (RoHS &
no Sb/Br)
CU NIPDAU
Level-1-260C-UNLIM
SN74CB3T16211ZQLR
ACTIVE
VFBGA
ZQL
56
1000
SNAGCU
Level-1-260C-UNLIM
Pb-Free
(RoHS)
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) 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.
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
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 1
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
enhancements, improvements, and other changes to its products and services at any time and to discontinue
any product or service without notice. Customers should obtain the latest relevant information before placing
orders and should verify that such information is current and complete. All products are sold subject to TI’s terms
and conditions of sale supplied at the time of order acknowledgment.
TI warrants performance of its hardware products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI
deems necessary to support this warranty. Except where mandated by government requirements, testing of all
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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
Telephony
www.ti.com/telephony
Video & Imaging
www.ti.com/video
Wireless
www.ti.com/wireless
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