TI TXB0302

TXB0302
www.ti.com
SCES837A – MARCH 2012 – REVISED MAY 2012
2-Bit Bidirectional Voltage-Level Translator with Automatic Direction Sensing
Check for Samples: TXB0302
FEATURES
1
•
•
•
•
•
•
•
Fully Symmetric Supply Voltages.
0.9 V to 3.6 V on A Port and 0.9 V to 3.6 V
VCC Isolation Feature — If Either VCC Input Is at
GND, All Outputs Are in the High-Impedance
State
OE Input Circuit Referenced to VCCA
Low Power Consumption, 5-µA Max ICC
Ioff Supports Partial-Power-Down Mode
Operation
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection Exceeds JESD 22
– 4000-V Human-Body Model (A114-B)
– 1000-V Charged-Device Model (C101)
DESCRIPTION
This 2-bit noninverting translator uses two separate
configurable power-supply rails. The A port is
designed to track VCCA. VCCA accepts any supply
voltage from 0.9 V to 3.6 V. The B port is designed to
track VCCB. VCCB accepts any supply voltage from
0.9 V to 3.6 V. This allows for low-voltage
bidirectional translation between 1-V, 1.2-V, 1.5-V,
1.8-V, 2.5-V and 3.3-V voltage nodes. For the
TXB0302, when the output-enable (OE) input is low,
all outputs are placed in the high-impedance state. To
ensure the high-impedance state during power up or
power down, OE should be tied to GND through a
pulldown resistor; the minimum value of the resistor is
determined by the current-sourcing capability of the
driver. The TXB0302 is designed so that the OE input
circuit is supplied by VCCA. This device is fully
specified for partial-power-down applications using
Ioff. The Ioff circuitry disables the outputs, preventing
damaging current backflow through the device when
it is powered down.
DQM PACKAGE
(TOP VIEW)
VCCA
1
8
VCCB
A1
2
7
A2
3
6
B1
B2
GND
4
5
OE
A.
Pull up resistors are not required on both sides for Logic I/O.
B.
If pull up or pull down resistors are needed, the resistor value must be over 20 kΩ.
C.
20 kΩ is a safe recommended value, if the customer can accept higher Vol or lower Voh, smaller pull up or pull down
resistor is allowed, the draft estimation is Vol = Vccout × 1.5k/(1.5k + Rpu) and Voh = Vccout × Rdw/(1.5k + Rdw).
D.
If pull up resistors are needed, please refer to the TXS0102 or contact TI.
E.
For detailed information, please refer to application note SCEA043.
ORDERING INFORMATION (1)
(1)
(2)
TA
PACKAGE (2)
ORDERABLE PART NUMBER
TOP-SIDE MARKING
–40°C to 85°C
DQM – MicroQFN
TXB0302DQMR
77A
For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2012, Texas Instruments Incorporated
TXB0302
SCES837A – MARCH 2012 – REVISED MAY 2012
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
PIN DESCRIPTION
PIN NO.
NAME
DQM
TXB0302
1
VCCA
2
A1
Input/output 1. Referenced to VCCA.
3
A2
Input/output 2. Referenced to VCCA.
4
GND
5
OE
3-state output-mode enable. Pull OE (TXB0302) low to place all outputs in 3-state mode.
6
B2
Input/output 2. Referenced to VCCB.
7
B1
Input/output 1. Referenced to VCCB.
8
VCCB
FUNCTION
A-port supply voltage 0.9 V ≤ VCCA ≤ 3.6 V
Ground
B-port supply voltage 0.9 V ≤ VCCB ≤ 3.6 V.
ABSOLUTE MAXIMUM RATINGS (1)
over operating free-air temperature range (unless otherwise noted)
VCCA
VCCB
MIN
MAX
–0.5
4.6
–0.5
4.6
A port
–0.5
4.6
B port
–0.5
6.5
A port
–0.5
4.6
B port
-0.5
6.5
A port
–0.5 VCCA + 0.5
B port
–0.5 VCCB + 0.5
Supply voltage range
VI
Input voltage range
VO
Voltage range applied to any output in the high-impedance or
power-off state
UNIT
V
V
V
V
VO
Voltage range applied to any output in the high or low state(2)
IIK
Input clamp current
VI < 0
–50
mA
IOK
Output clamp current
VO < 0
–50
mA
IO
Continuous output current
±50
mA
±100
mA
150
°C
Continuous current through VCCA, VCCB, or GND
Tstg
(1)
Storage temperature range
–65
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.
THERMAL IMPEDANCE RATINGS (1) (2)
TXB0302
THERMAL METRIC
DQM
UNIT
8 PINS
θJA
(1)
(2)
2
Package thermal impedance
259
°C/W
The package thermal impedance is calculated in accordance with JESD 51-7.
The package thermal impedance is calculated in accordance with JESD 51-5.
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TXB0302
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SCES837A – MARCH 2012 – REVISED MAY 2012
RECOMMENDED OPERATING CONDITIONS (1)
VCCA
VCCA
Supply voltage
VCCB
VIH
High-level input voltage
MIN
MAX
0.9
3.6
0.9
3.6
Data inputs
0.9 V to 3.6 V
0.9 V to 3.6 V
VCCI (2) ×
0.65
VCCI (2)
OE
0.9 V to 3.6 V
0.9 V to 3.6 V
VCCA × 0.65
3.6
Data inputs
0.9 V to 3.6 V
0.9 V to 3.6 V
0 VCCI
OE
0.9 V to 3.6 V
0.9 V to 3.6 V
0
VCCA × 0.35
0.9 V to 3.6 V
0.9 V to 3.6 V
0
3.6
0.9 V to 3.6 V
0.9 V to 3.6 V
0
3.6
A-port inputs
0.9 V to 3.6 V
0.9 V to 3.6 V
40
B-port inputs
0.9 V to 3.6 V
0.9 V to 3.6 V
40
VIL
Low-level input voltage
VO
Voltage range applied to any output in A-port
the high-impedance or power-off state B-port
Δt/Δv
Input transition rise or fall rate
TA
Operating free-air temperature
(1)
(2)
VCCB
UNIT
V
V
(2)
–40
× 0.35
85
V
V
ns/V
°C
The A and B sides of an unused data I/O pair must be held in the same state, i.e., both at VCCI or both at GND.
VCCI is the supply voltage associated with the input port.
ELECTRICAL CHARACTERISTICS
PARAMETER
TEST CONDITIONS
VCCA
TA = 25°C
VCCB
MIN
–40°C to 85°C
UNIT
TYP
MAX
MIN
MAX
VOHA
IOH = –20 μA
0.9 V to 3.6 V
VOLA
IOL = 20 μA
0.9 V to 3.6 V
VOHB
IOH = –20 μA
VOLB
IOL = 20 μA
0.9 V to 3.6 V
OE
VI = VCCI or GND
0.9 V to 3.6 V
0.9 V to 3.6 V
±1
±2
A port
VI or VO = 0 to 3.6 V
0V
0 V to 3.6 V
±1
±2
B port
VI or VO = 0 to 3.6 V
0.9 V to 3.6 V
0V
±1
±2
A or B port
±1
II
Ioff
0.9 x VCCA
V
0.2
0.9 V to 3.6 V
V
0.9 x VCCB
V
0.2
V
μA
μA
OE = GND
0.9 V to 3.6 V
0.9 V to 3.6 V
±2
μA
ICCA
VI = VCCI or GND, IO = 0
0.9 V to 3.6 V
0.9 V to 3.6 V
5
μA
ICCB
VI = VCCI or GND, IO = 0
0.9 V to 3.6 V
0.9 V to 3.6 V
5
μA
ICCA + ICCB
VI = VCCI or GND, IO = 0
0.9 V to 3.6 V
0.9 V to 3.6 V
10
μA
ICCZA
VI = VCCI or GND, IO = 0, OE = GND
0.9 V to 3.6 V
0.9 V to 3.6 V
5
μA
ICCZB
VI = VCCI or GND, IO = 0, OE = GND
0.9 V to 3.6 V
0.9 V to 3.6 V
5
μA
OE
0.9 V to 3.6 V
0.9 V to 3.6 V
3
A port
0.9 V to 3.6 V
0.9 V to 3.6 V
9
IOZ
Ci
Cio
pF
pF
B port
12
TIMING REQUIREMENTS
Data rate
VCCA
VCCB
MAX
UNIT
CL = 15 pF
0.9 to 3.6 V
0.9 to 3.6 V
MIN
40
Mbps
CL = 15 pF
1.2 to 3.6 V
1.2 to 3.6 V
100
Mbps
CL = 15 pF
1.8 to 3.6 V
1.8 to 3.6 V
140
Mbps
CL = 30 pF
0.9 to 3.6 V
0.9 to 3.6 V
40
Mbps
CL = 30 pF
1.2 to 3.6 V
1.2 to 3.6 V
90
Mbps
CL = 30 pF
1.8 to 3.6 V
1.8 to 3.6 V
120
Mbps
CL = 50 pF
1.2 to 3.6 V
1.2 to 3.6 V
70
Mbps
CL = 50 pF
1.8 to 3.6 V
1.8 to 3.6 V
100
Mbps
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3
TXB0302
SCES837A – MARCH 2012 – REVISED MAY 2012
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SWITCHING CHARACTERISTICS
over operating free-air temperature range (unless otherwise noted)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
A
B
A
B
A
A
tpd
TYP
TA = 25°C
MAX
0.9-3.6
18.9
62.5
1.2-3.6
7.5
15.5
VCCA
VCCB
MIN
UNIT
CL = 15
0.9-3.6
CL = 15
1.2-3.6
B
CL = 15
1.8-3.6
1.8-3.6
3.7
5.8
B
CL = 30
0.9-3.6
0.9-3.6
19.5
64.5
A
B
CL = 30
1.2-3.6
1.2-3.6
7.8
16.1
A
B
CL = 30
1.8-3.6
1.8-3.6
3.8
6.1
A
B
CL = 50
1.2-3.6
1.2-3.6
8
16.8
A
B
CL = 50
1.8-3.6
1.8-3.6
4
6.5
B
A
CL = 15
0.9-3.6
0.9-3.6
18.9
62.6
B
A
CL = 15
1.2-3.6
1.2-3.6
7.5
15.4
B
A
CL = 15
1.8-3.6
1.8-3.6
3.7
5.8
B
A
CL = 30
0.9-3.6
0.9-3.6
19.5
64.5
B
A
CL = 30
1.2-3.6
1.2-3.6
7.8
16.1
B
A
CL = 30
1.8-3.6
1.8-3.6
3.8
5.2
B
A
CL = 50
1.2-3.6
1.2-3.6
8
16.9
B
A
CL = 50
1.8-3.6
1.8-3.6
4
A
CL = 15
0.9-3.6
0.9-3.6
504
B
CL = 15
0.9-3.6
0.9-3.6
356
A
CL = 15
0.9-3.6
0.9-3.6
200
ns
B
200
ns
ns
ns
6.6
ten
OE
tdis
OE
CL = 15
0.9-3.6
0.9-3.6
trB, tfB
B-port rise and fall times
CL = 15
0.9-3.6
0.9-3.6
2.95
ns
ts, ts
A-port rise and fall times
CL = 15
0.9-3.6
0.9-3.6
3.1
ns
tSK(O)
Channel-to-channel
skew
CL = 15
0.9-3.6
0.9-3.6
0.5
ns
ns
OPERATING CHARACTERISTICS
TA = 25°C
PARAMETER
CpdA
CpdB
CpdA
CpdB
4
TEST CONDITIONS
A-port input, B-port output
B-port input, A-port output
A-port input, B-port output
40
40
40
A-port input, B-port output
A-port input, B-port output
TYP
40
CL = 0, f = 10 MHz, tr = tf = 1 ns,
OE = VCCA (outputs enabled)
B-port input, A-port output
B-port input, A-port output
VCCA, VCCB 0.9 V to 3.6 V
0.01
CL = 0, f = 10 MHz, tr = tf = 1 ns,
OE = GND (outputs disabled)
B-port input, A-port output
0.01
0.01
0.01
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UNIT
pF
pF
pF
pF
Copyright © 2012, Texas Instruments Incorporated
Product Folder Link(s) :TXB0302
TXB0302
www.ti.com
SCES837A – MARCH 2012 – REVISED MAY 2012
PARAMETER MEASUREMENT INFORMATION
2 × VCCO
From Output
Under Test
50 k
LOAD CIRCUIT FOR
ENABLE/DISABLE
TIME MEASUREMENT
VCCI
VCCI/2
VCCI/2
0V
t PLH
Output
Open
50 k
CL
LOAD CIRCUIT FOR MAX DATA RATE,
PULSE DURATION PROPAGATION
DELAY OUTPUT RISE AND FALL TIME
MEASUREMENT
Input
50 k
From Output
Under Test
CL
S1
TEST
S1
t PZL/t PLZ
t PHZ/t PZH
2 × VCCO
Open
VCCA
Output
Control
(low-level
enabling)
VCCA/2
VCCA /2
0V
t PHL
VCCO/2
0.9
VCCO
0.1
VCCO
tr
VCCO/2
tf
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOL
t PLZ
t PZL
VOH
Output
Waveform 1
S1 at 2 × VCCO
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
VCCO
0.1 VCCO
VCCO/2
VOL
t PHZ
t PZH
0.9
VOH
VCCO
VCCO/2
0V
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
A.
B.
C.
D.
E.
F.
G.
CL includes probe and jig capacitance.
All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, ZO = 50 Ω, dv/dt ≥ 1 V/ns.
The outputs are measured one at a time, with one transition per measurement.
tPLH and tPHL are the same as tpd.
VCCI is the VCC associated with the input port.
VCCO is the VCC associated with the output port.
All parameters and waveforms are not applicable to all devices.
Figure 1. Load Circuits and Voltage Waveforms
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TXB0302
SCES837A – MARCH 2012 – REVISED MAY 2012
www.ti.com
REVISION HISTORY
Changes from Original (March 2012) to Revision A
•
6
Page
Added package pin out diagram notes. ................................................................................................................................ 1
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Product Folder Link(s) :TXB0302
PACKAGE OPTION ADDENDUM
www.ti.com
30-May-2012
PACKAGING INFORMATION
Orderable Device
TXB0302DQMR
Status
(1)
ACTIVE
Package Type Package
Drawing
X2SON
DQM
Pins
Package Qty
8
3000
Eco Plan
(2)
Green (RoHS
& no Sb/Br)
Lead/
Ball Finish
MSL Peak Temp
(3)
Samples
(Requires Login)
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 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
PACKAGE MATERIALS INFORMATION
www.ti.com
30-May-2012
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
TXB0302DQMR
Package Package Pins
Type Drawing
X2SON
DQM
8
SPQ
Reel
Reel
A0
Diameter Width (mm)
(mm) W1 (mm)
3000
180.0
9.5
Pack Materials-Page 1
1.4
B0
(mm)
K0
(mm)
P1
(mm)
2.0
0.5
4.0
W
Pin1
(mm) Quadrant
8.0
Q1
PACKAGE MATERIALS INFORMATION
www.ti.com
30-May-2012
*All dimensions are nominal
Device
Package Type
Package Drawing
Pins
SPQ
Length (mm)
Width (mm)
Height (mm)
TXB0302DQMR
X2SON
DQM
8
3000
180.0
180.0
30.0
Pack Materials-Page 2
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