TXS0108ENMER [TI]
适用于漏极开路和推挽应用的 8 位双向电压电平转换器 | NME | 20 | -40 to 85;型号: | TXS0108ENMER |
厂家: | TEXAS INSTRUMENTS |
描述: | 适用于漏极开路和推挽应用的 8 位双向电压电平转换器 | NME | 20 | -40 to 85 驱动 接口集成电路 转换器 电平转换器 驱动程序和接口 |
文件: | 总24页 (文件大小:844K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
1
FEATURES
ZXY PACKAGE
(BOTTOM VIEW)
•
1.2 V to 3.6 V on A Port and 1.65 V to 5.5 V on
B Port (VCCA ≤ VCCB
)
1
2
3
4
5
•
VCC Isolation Feature – If Either VCC Input Is
at GND, All Outputs Are in the High-Impedance
State
D
C
•
•
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
B
A
ESD Protection Exceeds JESD 22 (A Port)
–
–
–
2000-V Human-Body Model (A114-B)
150-V Machine Model (A115-A)
TERMINAL ASSIGNMENTS
1000-V Charged-Device Model (C101)
1
2
3
4
5
B8
•
IEC 61000-4-2 ESD (B Port)
D
C
B
A
VCCB
B1
B2
B3
A3
A2
B4
B5
A5
A4
B6
B7
A7
A6
–
–
±8-kV Contact Discharge
±6-kV Air-Gap Discharge
GND
OE
A8
A1
VCCA
PW PACKAGE
(TOP VIEW)
RGY PACKAGE
(TOP VIEW)
A1
B1
V
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
1
20
V
CCA
A2
CCB
V
V
CCB
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
CCA
A2
B2
B3
B4
B5
B6
B7
B8
GND
B2
B3
B4
B5
B6
B7
B8
A3
A4
A5
A6
A7
A8
OE
A3
A4
A5
A6
A7
A8
10
11
DESCRIPTION/ORDERING INFORMATION
This 8-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to
track VCCA. VCCA accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track VCCB. VCCB
accepts any supply voltage from 1.65 V to 5.5 V. This allows for low-voltage bidirectional translation between any
of the 1.2-V, 1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.
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.
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.
Copyright © 2007, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
ORDERING INFORMATION
TA
PACKAGE(1)(2)
ORDERABLE PART NUMBER
TXS0108ERGYR
TOP-SIDE MARKING
QFN – RGY
Reel of 1000
Reel of 2000
Reel of 2500
YF08E
–40°C to 85°C TSSOP – PW
TXS0108EPWR
YF08E
YF08E
UFBGA – ZXY
TXS0108EZXYR
(1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
(2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
TYPICAL OPERATING CIRCUIT
1.8 V
3.3 V
V
V
CCB
CCA
OE
TXS0108E
1.8-V
System
Controller
3.3-V
System
A1
A2
B1
B2
A3
A4
A5
A6
A7
A8
B3
B4
B5
B6
B7
B8
Data
Data
2
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): TXS0108E
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
ABSOLUTE MAXIMUM RATINGS(1)
over operating free-air temperature range (unless otherwise noted)
MIN
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
–0.5
MAX
4.6
UNIT
V
VCCA
VCCB
Supply voltage range
Supply voltage range
5.5
V
A port
B port
A port
B port
A port
B port
VI < 0
VO < 0
4.6
VI
Input voltage range(2)
V
V
V
6.5
4.6
Voltage range applied to any output
VO
VO
in the high-impedance or power-off state(2)
6.5
VCCA + 0.5
VCCB + 0.5
–50
Voltage range applied to any output in the high or low state(2)(3)
IIK
IOK
IO
Input clamp current
mA
mA
mA
mA
°C
Output clamp current
–50
Continuous output current
Continuous current through VCCA, VCCB, or GND
Storage temperature range
±50
±100
150
Tstg
–65
(1) 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.
(2) The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.
(3) The value of VCCA and VCCB are provided in the recommended operating conditions table.
THERMAL IMPEDANCE RATINGS
UNIT
PW package(1)
RGY package(2)
ZXY package(1)
70
TBD
47
θJA
Package thermal impedance
°C/W
(1) The package thermal impedance is calculated in accordance with JESD 51-5.
(2) The package thermal impedance is calculated in accordance with JESD 51-7.
Copyright © 2007, Texas Instruments Incorporated
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Product Folder Link(s): TXS0108E
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
RECOMMENDED OPERATING CONDITIONS(1)(2)
VCCA
VCCB
MIN
MAX
UNIT
VCCA
1.2
3.6
Supply voltage(3)
VCCB
V
1.65
5.5
1.2 V to 1.95 V
VCCI – 0.2
5.5
A-Port I/Os
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.95 V to 3.6 V
VCCI – 0.4
5.5
5.5
VIH
High-level input voltage
Low-level input voltage
V
B-Port I/Os
OE
VCCI – 0.4
1.2 V to 3.6 V
VCCA × 0.65
5.5
1.2 V to 1.95 V
1.95 V to 3.6 V
0
0
0
0
0.15
A-Port I/Os
0.15
VIL
V
B-Port I/Os
OE
0.15
1.2 V to 3.6 V
VCCA × 0.35
A-Port I/Os
push-pull driving
Input transition rise or fall
rate
Δt/Δv
B-Port I/Os
push-pull driving
1.2 V to 3.6 V
1.65 V to 5.5 V
10
85
ns/V
Control input
TA
Operating free-air temperature
–40
°C
(1) VCCI is the VCC associated with the data input port.
(2) VCCO is the VCC associated with the output port.
(3) VCCA must be less than or equal to VCCB, and VCCA must not exceed 3.6 V.
4
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): TXS0108E
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
ELECTRICAL CHARACTERISTICS(1)(2)(3)
over recommended operating free-air temperature range (unless otherwise noted)
TA = 25°C
TYP
–40°C to 85°C
TEST
CONDITIONS
PARAMETER
VCCA
VCCB
UNIT
MIN
MAX
MIN MAX
1.2 V
VCCA × 0.67
0.25
IOH = –20 µA,
VIB ≥ VCCB – 0.4 V
VOHA
1.65 V to 5.5 V
V
1.4 V to 3.6 V
VCCA × 0.67
IOL = 135 µA,
VIB ≤ 0.15 V
1.2 V
1.4 V
1.65 V
2.3 V
3 V
0.25
IOL = 180 µA,
VIB ≤ 0.15 V
0.4
0.4
IOL = 220 µA,
VIB ≤ 0.15 V
VOLA
1.65 V to 5.5 V
V
IOL = 300 µA,
VIB ≤ 0.15 V
0.4
IOL = 400 µA,
VIB ≤ 0.15 V
0.55
1.2 V
IOH = –20 µA,
VIA ≥ VCCA – 0.2 V
VOHB
1.65 V to 5.5 V
V
V
1.4 V to 3.6 V
VCCB × 0.67
IOL = 220 µA,
VIA ≤ 0.15 V
1.65 V
2.3 V
3 V
0.4
IOL = 300 µA,
VIA ≤ 0.15 V
0.4
VOLB
1.2 V to 3.6 V
IOL = 400 µA,
VIA ≤ 0.15 V
0.55
IOL = 620 µA,
VIA ≤ 0.15 V
4.5 V
0.55
2
II
OE
VI = VCCI or GND
1.2 V
1.2 V
1.65 V to 5.5 V
1.65 V to 5.5 V
±1
±1
µA
µA
A or
B port
IOZ
±2
1.2 V
1.4 V to 3.6 V
3.6 V
1.65 V to 5.5 V
2.3 V to 5.5 V
0 V
1.5
1.5
±2
2
VI = VO = Open,
IO = 0
ICCA
µA
µA
2
0 V
5.5 V
–1
1.2 V
1.65 V to 5.5 V
2.3 V to 5.5 V
0 V
1.4 V to 3.6 V
3.6 V
6
–1
1
VI = VO = Open,
IO = 0
ICCB
0 V
5.5 V
1.2 V
3
0.05
4
VI = VCCI or GND,
IO = 0
ICCA + ICCB
2.3 V to 5.5 V
1.65 V to 5.5 V
µA
µA
1.4 V to 3.6 V
1.2 V
8
2
VI = VO = Open,
IO = 0, OE = GND
ICCZA
1.4 V to 3.6 V
1.2 V
VI = VO = Open,
IO = 0, OE = GND
ICCZB
1.65 V to 5.5 V
3.3 V
µA
pF
pF
1.4 V to 3.6 V
3.3 V
6
5.5
7
Ci
OE
4.5
6
A port
B port
Cio
3.3 V
3.3 V
5.5
6
(1) VCCO is the VCC associated with the output port.
(2) VCCI is the VCC associated with the input port.
(3) VCCA must be less than or equal to VCCB, and VCCA must not exceed 3.6 V.
Copyright © 2007, Texas Instruments Incorporated
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Product Folder Link(s): TXS0108E
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
TIMING REQUIREMENTS
TA=25°C, VCCA = 1.2 V
VCCB = 1.8 V
TYP
VCCB = 2.5 V
VCCB = 3.3 V
VCCB = 5 V
UNIT
Mbps
ns
TYP
20
TYP
20
TYP
20
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
20
1
Data rate
1
1
1
50
500
50
50
50
tw
Pulse duration
Data inputs
500
500
500
TIMING REQUIREMENTs
over recommended operating free-air temperature range, VCCA = 1.5 V ± 0.1 V (unless otherwise noted)
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB= 3.3 V
± 0.3 V
VCCB= 5 V
± 0.5 V
UNIT
MIN
MAX
40
MIN
MAX
60
MIN
MAX
MIN
MAX
Data rate
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
60
1
50 Mbps
1
1
1
tw
25
16.7
500
16.7
500
20
ns
Pulse duration
Data inputs
500
500
TIMING REQUIREMENTS
over recommended operating free-air temperature range, VCCA = 1.8 V ± 0.15 V (unless otherwise noted)
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB= 3.3 V
± 0.3 V
VCCB= 5 V
± 0.5 V
UNIT
MIN
MAX
MIN MAX
MIN MAX
MIN
MAX
60 Mbps
Data rate
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
40
1
60
60
1
1
1
tw
25
16.7
16.7
16.7
500
ns
Pulse duration
Data inputs
500
500
500
TIMING REQUIREMENTS
over recommended operating free-air temperature range, VCCA = 2.5 V ± 0.2 V (unless otherwise noted)
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCC = 5 V
± 0.5 V
UNIT
MIN
MAX
60
MIN
MAX
MIN
MAX
60
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
60
1
Data rate
Mbps
ns
1
1
16.7
500
16.7
500
16.7
500
tw
Pulse duration
Data inputs
TIMING REQUIREMENTS
over recommended operating free-air temperature range, VCCA = 3.3 V ± 0.3 V (unless otherwise noted)
VCCB = 3.3 V
± 0.3 V
VCC = 5 V
± 0.5 V
UNIT
MIN
MAX
MIN
MAX
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
60
1
60
1
Data rate
Mbps
ns
16.7
500
16.7
500
tw
Pulse duration
Data inputs
6
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): TXS0108E
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 1.2 V (unless otherwise noted)
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
FROM
(INPUT)
TO
(OUTPUT)
TEST
CONDITIONS
PARAMETER
UNIT
TYP
6.5
11.9
7.1
293
6.4
8.5
5.6
312
200
16.8
7.9
296
6.3
236
5.8
5.9
4.6
4.5
1
TYP
5.9
11.1
6.3
236
6
TYP
5.7
11.0
6.2
197
5.8
6.2
3.6
192
200
13.2
6.5
185
1.8
115
4.3
4.1
2.2
2.2
1
TYP
5.5
11.1
6.6
152
5.6
5.9
3.2
132
200
13.5
6.4
127
1.5
60
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
tPHL
tPLH
tPHL
tPLH
A
B
B
A
ns
6.8
4.1
248
200
13.9
6.7
238
3.3
164
4.8
4.7
2.8
2.7
1
ns
ten
OE
OE
A or B
A or B
ns
ns
Push-pull driving
tdis
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
trA
trB
tfA
A-port rise time
ns
ns
B-port rise time
A-port fall time
B-port fall time
3.8
3.5
1.9
1.9
1
ns
tfB
Channel-to-channel
skew
tSK(O)
Push-pull driving
ns
Push-pull driving
20
1
20
1
20
1
20
1
Max data rate
A or B
Mbps
Open-drain driving
Copyright © 2007, Texas Instruments Incorporated
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Product Folder Link(s): TXS0108E
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 1.5 V ± 0.1 V (unless otherwise noted)
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
FROM
PARAMETER (INPUT
)
TO
(OUTPUT)
TEST
CONDITIONS
± 0.5 V
MIN MAX
8.6
UNIT
MIN
MAX
MIN
MAX
9.2
12.8
10
MIN
MAX
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
11
14.4
12
8.6
12.2
9.8
473
11
tPHL
4
3.6
3.5
3.5
12
A
B
A
ns
9.7
tPLH
182
3.4
186
720
12.7
13.2
9.5
143
3.1
554
11.1
9.6
6.2
603
200
22
114
2.8
81 384
12
tPHL
8.5
5.1
519
200
20.1
9
2.5
7.5
1.6
B
ns
tPLH
745
200
28.1
13.1
982
11.4
1020
9.9
147
118
84 407
200 ns
ten
OE
OE
A or B
A or B
Push-pull driving
tdis
19.6 ns
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
3.5
147
2.9
135
2.3
2.4
2
3
115
1.9
91
9.8
716
7.4
756
7.7
7.9
5.5
8.6
1
3.1
92
0.9
58
1.6
1.7
0.9
1
3.2
8.3
ns
trA
trB
tfA
A-port rise time
B-port rise time
A-port fall time
B-port fall time
592
4.7
653
6.8
7
66 481
0.7
2.6
ns
20 370
1.7
2.1
1.3
1.3
1
1.7
1.5
0.8
0.5
6
6.2
3.1
7.7
1
10
ns
ns
8.7
3.8
9.6
1.1
tfB
1.2
11.5
1
Channel-to-channel
skew
tSK(O)
Push-pull driving
Push-pull driving
40
1
60
1
60
1
50
1
Mbp
s
Max data rate
A or B
Open-drain driving
1
8
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Copyright © 2007, Texas Instruments Incorporated
Product Folder Link(s): TXS0108E
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 1.8 V ± 0.15 V(unless otherwise noted)
VCCB = 1.8 V
± 0.15 V
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
FROM
PARAMETER (INPUT
)
TO
(OUTPUT)
TEST
CONDITIONS
UNIT
MIN
MAX
MIN
MAX
6.4
9.9
2.1
584
8
MIN
MAX
5.7
9.3
6.5
466
7.4
7.3
5.8
459
200
16.5
7.8
508
5.2
546
5.7
5.8
3.9
9.6
1
MIN
3.1
90
MAX
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
8.2
11.4
9
5.6
8.9
6.3
346
7
tPHL
3.6
3.2
3.1
A
B
A
ns
tPLH
194
3.4
729
9.8
155
2.8
126
2.5
tPHL
12.1
10.2
733
200
25.1
11.9
996
10.5
1001
8.8
8.5
7
2.1
93
6.2
5
B
ns
tPLH
197
159
578
200
18.8
8.6
691
7.2
677
6.6
6.7
5.4
10.7
1
129
323
ten
OE
OE
A or B
A or B
200 ns
15.3 ns
Push-pull driving
tdis
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
3.1
155
2.8
132
2.1
2.2
2
2.6
124
1.8
106
1.6
1.7
1.3
0.7
2.7
100
1.2
73
2.8
72
7.2
ns
trA
trB
tfA
A-port rise time
B-port rise time
A-port fall time
B-port fall time
350
0.7
32
2.7
ns
323
1.4
1.4
0.9
1
1.4
1.2
0.7
0.6
4.9
9
5.2
ns
3
8.3
tfB
0.8
10.5
1
7.8
Channel-to-channel
skew
1
tSK(O)
Push-pull driving
ns
Push-pull driving
40
1
60
1
60
1
60
1
Mbp
s
Max data rate
A or B
Open-drain driving
Copyright © 2007, Texas Instruments Incorporated
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TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 2.5 V ± 0.2 V (unless otherwise noted)
VCCB = 2.5 V
± 0.2 V
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
FROM
(INPUT)
TO
(OUTPUT)
TEST
CONDITIONS
PARAMETER
UNIT
MIN
MAX
MIN
MAX
MIN
2.2
93
MAX
Push-pull driving
5
6.9
5.2
592
5.4
7.3
5.9
595
200
15.7
7.3
692
6.5
693
5.7
5.6
5.4
14.2
1
4
6.3
4.3
488
4.7
6
3.7
5.8
3.9
368
4.2
4.9
3.5
345
tPHL
tPLH
tPHL
tPLH
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
2.4
2.3
A
B
B
A
ns
149
2.5
125
2.2
1.8
94
ns
4.4
481
200
12.9
6.4
529
5.1
483
4.7
4.7
4.1
19.4
1.2
60
150
126
ten
OE
OE
A or B
A or B
200 ns
11.2 ns
Push-pull driving
tdis
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Push-pull driving
Open-drain driving
2
110
1.8
107
1.5
1.5
1.4
0.4
2.1
93
2.2
68
5.8
ns
trA
trB
tfA
A-port rise time
369
1.3
79
0.7
41
3.4
ns
B-port rise time
A-port fall time
304
1.2
1.2
0.9
0.5
1.3
1.1
0.7
0.4
3.8
4
ns
3
tfB
B-port fall time
Channel-to-channel skew
A or B
3
tSK(O)
1
60
1
ns
60
Mbp
s
Max data rate
1
1
10
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Product Folder Link(s): TXS0108E
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
SWITCHING CHARACTERISTICS
over recommended operating free-air temperature range, VCCA = 3.3 V ± 0.3 V (unless otherwise noted)
VCCB = 3.3 V
± 0.3 V
VCCB = 5 V
± 0.5 V
FROM
(INPUT)
TO
(OUTPUT)
TEST
CONDITIONS
PARAMETER
UNIT
MIN
MAX
MIN
MAX
3.1
4.8
3.5
352
3.8
4.5
4.3
339
200
9.8
5
Push-pull driving
3.8
5.3
3.9
439
4.2
5.5
3.8
449
200
11.9
5.7
446
5
tPHL
tPLH
tPHL
tPLH
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
2
1.9
87
A
B
B
A
ns
111
2.1
112
1.7
86
ns
ten
OE
OE
A or B
A or B
ns
ns
Push-pull driving
tdis
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Open-drain driving
Push-pull driving
Push-pull driving
Open-drain driving
1.8
75
1.5
72
1.2
1.1
1.1
1
1.9
57
1
trA
trB
tfA
A-port rise time
ns
ns
337
3.6
290
3.5
3.7
3.1
3.1
1
B-port rise time
A-port fall time
427
4.5
4.4
4.2
4.2
1
40
1.1
1
ns
0.8
0.8
tfB
B-port fall time
Channel-to-channel skew
A or B
tSK(O)
ns
60
60
Max data rate
Mbps
1
1
OPERATING CHARACTERISTICS
TA=25°C
VCCA
1.2 V 1.2 V
1.5 V
1.8 V
2.5 V
VCCB
2.5 V
TYP
2.5 V
3.3 V
PARAMETER
TEST CONDITIONS
UNIT
5 V
TYP
5.9
1.8 V
TYP
1.8 V
TYP
1.8 V
TYP
5 V
3.3 V to 5 V
TYP
TYP
A-port input, B-port
output
5.7
5.9
5.9
6.7
6.9
8
CpdA
CpdB
CpdA
CpdB
B-port input, A-port
output
10.2
29.9
22.9
0.01
0.06
0.06
0.06
10.3
22.2
16.7
0.01
0.01
0.01
0.01
9.9
21.5
16.7
0.01
0.01
0.01
0.01
9.7
20.8
16.8
0.01
0.01
0.01
0.01
9.7
21
9.4
23.4
20.8
0.01
0.01
0.03
0.03
9.8
23
CL = 0, f = 10 MHz,
tr= tf= 1ns,
OE = VCCA (outputs
enabled)
pF
A-port input, B-port
output
B-port input, A-port
output
17.8
0.01
0.01
0.01
0.01
20.9
0.01
0.01
0.02
0.02
A-port input, B-port
output
B-port input, A-port
output
CL = 0, f = 10 MHz,
tr= tf= 1ns,
OE = GND (outputs
disabled)
pF
A-port input, B-port
output
B-port input, A-port
output
Copyright © 2007, Texas Instruments Incorporated
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TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
PRINCIPLES OF OPERATION
Applications
The TXS0108E can be used in level-translation applications for interfacing devices or systems operating at
different interface voltages with one another. The TXS0108E is ideal for use in applications where an open-drain
driver is connected to the data I/Os. The TXS0108E can also be used in applications where a push-pull driver is
connected to the data I/Os, but the TXB0104 might be a better option for such push-pull applications. The
TXS0108E device is a semi-buffered auto-direction-sensing voltage translator design is optimized for translation
applications (e.g. MMC Card Interfaces) that require the system to start out in a low-speed open-drain mode and
then switch to a higher speed push-pull mode.
Architecture
To address these application requirements, a semi-buffered architecture design is used and is illustrated below
(see Figure 1). Edge-rate accelerator circuitry (for both the high-to-low and low-to-high edges), a High-Ron
n-channel pass-gate transistor (on the order of 300 Ω to 500 Ω) and pull-up resistors (to provide DC-bias and
drive capabilities) are included to realize this solution. A direction-control signal (to control the direction of data
flow from A to B or from B to A) is not needed. The resulting implementation supports both low-speed open-drain
operation as well as high-speed push-pull operation.
V
V
CCB
CCA
OS3
One-Shot
P2
N2
Rpua
Rpub
Translator
T1
OS4
One-Shot
Bias
R1
A
B
R2
Npass
OS1
One-Shot
P1
N1
Translator
T2
OS2
One-Shot
Figure 1. Architecture of a TXS01xx Cell
When transmitting data from A to B ports, during a rising edge the One-Shot (OS3) turns on the PMOS transistor
(P2) for a short-duration and this speeds up the low-to-high transition. Similarly, during a falling edge, when
transmitting data from A to B, the One-Shot (OS4) turns on NMOS transistor (N2) for a short-duration and this
speeds up the high-to-low transition. The B-port edge-rate accelerator consists of one-shots OS3 and OS4,
Transistors P2 and N2 and serves to rapidly force the B port high or low when a corresponding transition is
detected on the A port.
When transmitting data from B to A ports, during a rising edge the One-Shot (OS1) turns on the PMOS transistor
12
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TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
(P1) for a short-duration and this speeds up the low-to-high transition. Similarly, during a falling edge, when
transmitting data from B to A, the One-Shot (OS2) turns on NMOS transistor (N1) for a short-duration and this
speeds up the high-to-low transition. The A-port edge-rate accelerator consists of one-shots OS1 and OS2,
Transistors P1 and N1 components and form the edge-rate accelerator and serves to rapidly force the A port
high or low when a corresponding transition is detected on the B port.
Power Up
During operation, ensure that VCCA ≤ VCCB at all times. During power-up sequencing, VCCA ≥ VCCB does not
damage the device, so any power supply can be ramped up first.
Enable and Disable
The TXS0108E has an OE input that is used to disable the device by setting OE low, which places all I/Os in the
Hi-Z state. The disable time (tdis) indicates the delay between the time when OE goes low and when the outputs
actually get disabled (Hi-Z). The enable time (ten) indicates the amount of time the user must allow for the
one-shot circuitry to become operational after OE is taken high.
Pullup or Pulldown Resistors on I/O Lines
Each A-port I/O has a pull-up resistor (Rpua) to VCCA and each B-port I/O has a pull-up resistor (Rpub) to VCCB
.
Rpua and Rpub have a value of 40 kΩ when the output is driving low. Rpua and Rpub have a value of 4 kΩ when the
output is driving high. Rpua and Rpub are disabled when OE = Low.
Copyright © 2007, Texas Instruments Incorporated
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Product Folder Link(s): TXS0108E
TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS
www.ti.com
SCES642–DECEMBER 2007
PARAMETER MEASUREMENT INFORMATION
V
CCI
V
CCO
V
CCI
V
CCO
TXS0108E
IN
TXS0108E
IN
OUT
OUT
1 MΩ
1 MΩ
15 pF
15 pF
DATA RATE, PULSE DURATION, PROPAGATION DELAY,
OUTPUT RISE AND FALL TIME MEASUREMENT USING
AN OPEN-DRAIN DRIVER
DATA RATE, PULSE DURATION, PROPAGATION DELAY,
OUTPUT RISE AND FALL TIME MEASUREMENT USING
A PUSH-PULL DRIVER
2 xV
CCO
S1
50 kΩ
Open
From Output
Under Test
15 pF
50 kΩ
TEST
/t
S1
2 xV
t
PZL PLZ
CCO
LOAD CIRCUIT FOR ENABLE/DISABLE
TIME MEASUREMENT
t
/t
PHZ PZH
Open
t
w
V
CCI
V
CCA
V
/2
V
/2
Output
Control
Input
CCI
CCI
V /2
CCA
V /2
CCA
0 V
(low-level
enabling)
0 V
VOLTAGE WAVEFORMS
PULSE DURATION
t
PLZ
t
PZL
V
V
CCO
Output
V
CCI
V /2
CCO
Waveform 1
S1 at 2 xV
Input
V /2
CCO
V /2
CCO
0.1 xV
CCO
CCO
OL
0 V
(see Note B)
t
PHZ
t
t
t
PLH
PHL
PZH
Output
Waveform 2
S1 Open
V
OH
0.9 xV
V
CCO
OH
0.9 x V
0.1 xV
CCO
V
/2
Output
V /2
CCO
V
CCO
/2
CCO
(see Note B)
CCO
0 V
V
OL
t
f
t
r
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
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, dv/dt ≥ 1
V/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. VCCI is the VCC associated with the input port.
I. VCCO is the VCC associated with the output port.
J. All parameters and waveforms are not applicable to all devices.
Figure 2. Load Circuit and Voltage Waveforms
14
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PACKAGE OPTION ADDENDUM
www.ti.com
2-Apr-2008
PACKAGING INFORMATION
Orderable Device
Status (1)
Package Package
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)
Qty
Type
Drawing
TXS0108EDGVR
TXS0108EGXYR
PREVIEW
PREVIEW
TVSOP
DGV
20
20
2000
2500
TBD
TBD
Call TI
Call TI
Call TI
Call TI
BGA MI
CROSTA
R JUNI
OR
GXY
TXS0108EPWR
TXS0108EPWRG4
TXS0108ERGYR
TXS0108EZXYR
ACTIVE
ACTIVE
ACTIVE
ACTIVE
TSSOP
TSSOP
QFN
PW
PW
20
20
20
20
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
2000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM
no Sb/Br)
RGY
ZXY
1000 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR
no Sb/Br)
BGA MI
CROSTA
R JUNI
OR
2500 Green (RoHS &
no Sb/Br)
SNAGCU
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
29-Mar-2008
TAPE AND REEL INFORMATION
*All dimensions are nominal
Device
Package Package Pins
Type Drawing
SPQ
Reel
Reel
A0 (mm)
B0 (mm)
K0 (mm)
P1
W
Pin1
Diameter Width
(mm) W1 (mm)
(mm) (mm) Quadrant
TXS0108EPWR
TXS0108ERGYR
TXS0108EZXYR
TSSOP
QFN
PW
RGY
ZXY
20
20
20
2000
1000
2500
330.0
180.0
330.0
16.4
12.4
12.4
6.95
3.8
7.1
4.8
3.3
1.6
1.6
1.0
8.0
8.0
4.0
16.0
12.0
12.0
Q1
Q1
Q2
BGA MI
CROSTA
R JUNI
OR
2.8
Pack Materials-Page 1
PACKAGE MATERIALS INFORMATION
www.ti.com
29-Mar-2008
*All dimensions are nominal
Device
Package Type Package Drawing Pins
SPQ
Length (mm) Width (mm) Height (mm)
TXS0108EPWR
TXS0108ERGYR
TXS0108EZXYR
TSSOP
QFN
PW
RGY
ZXY
20
20
20
2000
1000
2500
346.0
190.5
340.5
346.0
212.7
338.1
33.0
31.8
20.6
BGA MICROSTAR
JUNIOR
Pack Materials-Page 2
MECHANICAL DATA
MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999
PW (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
14 PINS SHOWN
0,30
0,19
M
0,10
0,65
14
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
0,10
0,15
0,05
1,20 MAX
PINS **
8
14
16
20
24
28
DIM
3,10
2,90
5,10
4,90
5,10
4,90
6,60
6,40
7,90
9,80
9,60
A MAX
A MIN
7,70
4040064/F 01/97
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion not to exceed 0,15.
D. Falls within JEDEC MO-153
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