Datasheet TXS0108EPWR, TXS0108ERGYR, TXS0108EZXYR Datasheet (ROHM)

ZXY PACKAGE

(BOTTOMVIEW)

A

B

C

D

21 3 4 5

19

18

17

16

15

14

12

13

1

2

3

4

5

6

7

9

8

10 11

20

RGY PACKAGE

(TOP VIEW)

A1

B1

A2

A4

A6

A8

V

CCA

A3

A5

A7

B2

B4

B6

B8

V

CCB

B3

B5

B7

OE

GND

19

18

17

16

15

14

12

13

1

2

3

4

5

6

7

9

8

10 11

20

B1

PW PACKAGE

(TOP VIEW)

B2

B4

B6

B8

V

CCB

B3

B5

B7

A1

A2

A4

A6

A8

V

CCA

A3

A5

A7

OE GND

www.ti.com

1

FEATURES

• 1.2 V to 3.6 V on A Port and 1.65 V to 5.5 V on

• V

B Port (V

Isolation Feature – If Either V

CC

≤ V

CCA

)

CCB

Input Is

CC

at GND, All Outputs Are in the High-Impedance
State

• Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

• ESD Protection Exceeds JESD 22 (A Port)

– 2000-V Human-Body Model (A114-B)
– 150-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)

• IEC 61000-4-2 ESD (B Port)

– ± 8-kV Contact Discharge
– ± 6-kV Air-Gap Discharge

8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR

FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

TERMINAL ASSIGNMENTS

1 2 3 4 5

D V
C B1 B3 B5 B7 GND
B A1 A3 A5 A7 OE
A V

CCB

CCA

TXS0108E

SCES642 – DECEMBER 2007

B2 B4 B6 B8

A2 A4 A6 A8

DESCRIPTION/ORDERING INFORMATION

This 8-bit noninverting translator uses two separate configurable power-supply rails. The A port is designed to
track V
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

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.

. V

CCA

CCA

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.

accepts any supply voltage from 1.2 V to 3.6 V. The B port is designed to track V

Copyright © 2007, Texas Instruments Incorporated

. V

CCB

CCB

www.ti.com

V

V

OE

A1
A2

A3
A4
A5
A6
A7
A8

B1
B2

B3
B4
B5
B6
B7
B8

3.3-V

System

1.8-V

System

Data

Data

Controller

CCA

CCB

TXS0108E

1.8 V 3.3 V

TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

SCES642 – DECEMBER 2007

ORDERING INFORMATION

T

A

QFN – RGY Reel of 1000 TXS0108ERGYR YF08E

– 40 ° C to 85 ° C TSSOP – PW Reel of 2000 TXS0108EPWR YF08E

UFBGA – ZXY Reel of 2500 TXS0108EZXYR YF08E

(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 .

PACKAGE

(1) (2)

TYPICAL OPERATING CIRCUIT

ORDERABLE PART NUMBER TOP-SIDE MARKING

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8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR

FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

TXS0108E

SCES642 – DECEMBER 2007

ABSOLUTE MAXIMUM RATINGS

(1)

over operating free-air temperature range (unless otherwise noted)

MIN MAX UNIT

V
V

V

V

V

I

IK

I

OK

I

O

T

Supply voltage range – 0.5 4.6 V

CCA

Supply voltage range – 0.5 5.5 V

CCB

Input voltage range

I

Voltage range applied to any output

O

in the high-impedance or power-off state

Voltage range applied to any output in the high or low state

O

(2)

(2)

(2) (3)

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 V

B port – 0.5 V
Input clamp current VI< 0 – 50 mA
Output clamp current VO< 0 – 50 mA
Continuous output current ± 50 mA
Continuous current through V
Storage temperature range – 65 150 ° C

stg

, V

CCA

, or GND ± 100 mA

CCB

+ 0.5

CCA

+ 0.5

CCB

(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 V

and V

CCA

are provided in the recommended operating conditions table.

CCB

THERMAL IMPEDANCE RATINGS

(1)

(2)

(1)

TBD ° C/W

θ

JA

Package thermal impedance RGY package

(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.

PW package

ZXY package

V

V

V

UNIT

70

47

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TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

SCES642 – DECEMBER 2007

RECOMMENDED OPERATING CONDITIONS

V

CCA

V

CCB

V

IH

V

IL

Supply voltage

High-level input voltage V

Low-level input voltage V

(3)

A-Port I/Os 1.65 V to 5.5 V

B-Port I/Os V
OE V

A-Port I/Os 1.65 V to 5.5 V

B-Port I/Os 0 0.15
OE 0 V

(1) (2)

V

CCA

V

CCB

MIN MAX UNIT

1.2 3.6

1.65 5.5

1.2 V to 1.95 V V

1.95 V to 3.6 V V

1.2 V to 3.6 V 1.65 V to 5.5 V

– 0.2 5.5

CCI

– 0.4 5.5

CCI

– 0.4 5.5

CCI

× 0.65 5.5

CCA

1.2 V to 1.95 V 0 0.15

1.95 V to 3.6 V 0 0.15

1.2 V to 3.6 V 1.65 V to 5.5 V

CCA

× 0.35

A-Port I/Os
push-pull driving

Δ t/ Δ v B-Port I/Os 1.2 V to 3.6 V 1.65 V to 5.5 V 10 ns/V

Input transition rise or fall
rate

push-pull driving
Control input

T

(1) V
(2) V
(3) V

A

Operating free-air temperature – 40 85 ° C

is the V

CCI

is the V

CCO

must be less than or equal to V

CCA

associated with the data input port.

CC

associated with the output port.

CC

, and V

CCB

must not exceed 3.6 V.

CCA

V

4 Submit Documentation Feedback Copyright © 2007, Texas Instruments Incorporated

Product Folder Link(s): TXS0108E

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8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR

FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

TXS0108E

SCES642 – DECEMBER 2007

ELECTRICAL CHARACTERISTICS

(1) (2) (3)

over recommended operating free-air temperature range (unless otherwise noted)

TA= 25 ° C – 40 ° C to 85 ° C

MIN TYP MAX MIN MAX

× 0.67 0.25

CCA

CCA

CCB

PARAMETER V

V

OHA

V

OLA

V

OHB

V

OLB

I

OE VI= V

I

A or

I

OZ

B port

CONDITIONS

IOH= – 20 µ A,
VIB≥ V

IOL= 135 µ A,
VIB≤ 0.15 V

IOL= 180 µ A,
VIB≤ 0.15 V

IOL= 220 µ A,
VIB≤ 0.15 V

IOL= 300 µ A,
VIB≤ 0.15 V

IOL= 400 µ A,
VIB≤ 0.15 V

IOH= – 20 µ A,
VIA≥ V

TEST

– 0.4 V

CCB

– 0.2 V

CCA

CCA

1.2 V V

1.4 V to 3.6 V V

1.2 V 0.25

1.4 V 0.4

1.65 V 1.65 V to 5.5 V 0.4 V

2.3 V 0.4

3 V 0.55

1.2 V

1.4 V to 3.6 V V

IOL= 220 µ A,
VIA≤ 0.15 V

IOL= 300 µ A,
VIA≤ 0.15 V

IOL= 400 µ A,

1.2 V to 3.6 V V

VIA≤ 0.15 V
IOL= 620 µ A,

VIA≤ 0.15 V

or GND 1.2 V 1.65 V to 5.5 V ± 1 2 µ A

CCI

V

CCB

1.65 V to 5.5 V V

1.65 V to 5.5 V V

1.65 V 0.4

2.3 V 0.4

3 V 0.55

4.5 V 0.55

1.2 V 1.65 V to 5.5 V ± 1 ± 2 µ A

1.2 V 1.65 V to 5.5 V 1.5 ± 2

I

CCA

VI= VO= Open,
IO= 0

1.4 V to 3.6 V 2.3 V to 5.5 V 2

3.6 V 0 V 2
0 V 5.5 V – 1

1.2 V 1.65 V to 5.5 V 1.5

I

CCB

VI= VO= Open,
IO= 0

1.4 V to 3.6 V 2.3 V to 5.5 V 6

3.6 V 0 V – 1
0 V 5.5 V 1

VI= V

or GND,

I

+ I

CCA

CCB

I

CCZA

I

CCZB

C

OE 3.3 V 3.3 V 4.5 5.5 pF

i

A port 6 7

C

io

B port 5.5 6

(1) V
(2) V
(3) V

is the V

CCO

is the V

CCI

must be less than or equal to V

CCA

CCI

IO= 0
VI= VO= Open,

IO= 0, OE = GND
VI= VO= Open,

IO= 0, OE = GND

associated with the output port.

CC

associated with the input port.

CC

1.2 V 3

1.4 V to 3.6 V 8

1.2 V 0.05

1.4 V to 3.6 V 2

1.2 V 4

1.4 V to 3.6 V 6

2.3 V to 5.5 V µ A

1.65 V to 5.5 V µ A

1.65 V to 5.5 V µ A

3.3 V 3.3 V pF

, and V

CCB

must not exceed 3.6 V.

CCA

UNIT

× 0.67

× 0.67

µ A

µ A

Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback 5

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TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

SCES642 – DECEMBER 2007

TIMING REQUIREMENTS

TA=25 ° C, V

Data rate Mbps

t

Pulse duration Data inputs ns

w

TIMING REQUIREMENTs

over recommended operating free-air temperature range, V

Data rate Push-pull driving 40 60 60 50 Mbps

t

w

Pulse duration Data inputs

= 1.2 V

CCA

V

CCB

= 1.8 V V

CCB

= 2.5 V V

CCB

= 3.3 V V

TYP TYP TYP TYP

Push-pull driving 20 20 20 20
Open-drain driving 1 1 1 1
Push-pull driving 50 50 50 50
Open-drain driving 500 500 500 500

= 1.5 V ± 0.1 V (unless otherwise noted)

CCA

V

= 1.8 V V

CCB

± 0.15 V ± 0.2 V ± 0.3 V ± 0.5 V

CCB

= 2.5 V V

= 3.3 V V

CCB

MIN MAX MIN MAX MIN MAX MIN MAX

Open-drain driving 1 1 1 1
Push-pull driving 25 16.7 16.7 20 ns
Open-drain driving 500 500 500 500

= 5 V

CCB

= 5 V

CCB

UNIT

UNIT

TIMING REQUIREMENTS

over recommended operating free-air temperature range, V

V

Data rate Push-pull driving 40 60 60 60 Mbps

Open-drain driving 1 1 1 1

t

w

Pulse duration Data inputs

Push-pull driving 25 16.7 16.7 16.7 ns
Open-drain driving 500 500 500 500

= 1.8 V ± 0.15 V (unless otherwise noted)

CCA

= 1.8 V V

CCB

± 0.15 V ± 0.2 V ± 0.3 V ± 0.5 V

CCB

= 2.5 V V

= 3.3 V V

CCB

MIN MAX MIN MAX MIN MAX MIN MAX

TIMING REQUIREMENTS

over recommended operating free-air temperature range, V

Data rate Mbps

t

Pulse duration Data inputs ns

w

Push-pull driving 60 60 60
Open-drain driving 1 1 1
Push-pull driving 16.7 16.7 16.7
Open-drain driving 500 500 500

= 2.5 V ± 0.2 V (unless otherwise noted)

CCA

V

= 2.5 V V

CCB

± 0.2 V ± 0.3 V ± 0.5 V

= 3.3 V V

CCB

MIN MAX MIN MAX MIN MAX

TIMING REQUIREMENTS

over recommended operating free-air temperature range, V

Data rate Mbps

t

Pulse duration Data inputs ns

w

Push-pull driving 60 60
Open-drain driving 1 1
Push-pull driving 16.7 16.7
Open-drain driving 500 500

= 3.3 V ± 0.3 V (unless otherwise noted)

CCA

V

= 3.3 V V

CCB

± 0.3 V ± 0.5 V

MIN MAX MIN MAX

CC

CCB

CC

= 5 V

= 5 V UNIT

= 5 V

UNIT

UNIT

6 Submit Documentation Feedback Copyright © 2007, Texas Instruments Incorporated

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8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR

FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

SCES642 – DECEMBER 2007

SWITCHING CHARACTERISTICS

over recommended operating free-air temperature range, V

PARAMETER UNIT

t

PHL

t

PLH

t

PHL

t

PLH

t

en

t

dis

t

rA

t

rB

t

fA

t

fB

t

SK(O)

Max data rate A or B Mbps

FROM TO TEST

(INPUT) (OUTPUT) CONDITIONS

Push-pull driving 6.5 5.9 5.7 5.5

A B ns

Open-drain driving 11.9 11.1 11.0 11.1
Push-pull driving 7.1 6.3 6.2 6.6
Open-drain driving 293 236 197 152
Push-pull driving 6.4 6 5.8 5.6

B A ns

Open-drain driving 8.5 6.8 6.2 5.9
Push-pull driving 5.6 4.1 3.6 3.2

Open-drain driving 312 248 192 132
OE A or B 200 200 200 200 ns
OE A or B 16.8 13.9 13.2 13.5 ns

A-port rise time ns

B-port rise time ns

A-port fall time

B-port fall time

Channel-to-channel 1 1 1 1

skew

Push-pull driving

Push-pull driving 7.9 6.7 6.5 6.4

Open-drain driving 296 238 185 127

Push-pull driving 6.3 3.3 1.8 1.5

Open-drain driving 236 164 115 60

Push-pull driving 5.8 4.8 4.3 3.8

Open-drain driving 5.9 4.7 4.1 3.5

Push-pull driving 4.6 2.8 2.2 1.9

Open-drain driving 4.5 2.7 2.2 1.9

Push-pull driving ns

Push-pull driving 20 20 20 20

Open-drain driving 1 1 1 1

= 1.2 V (unless otherwise noted)

CCA

V

= 1.8 V V

CCB

± 0.15 V ± 0.2 V ± 0.3 V ± 0.5 V

CCB

= 2.5 V V

CCB

= 3.3 V V

TYP TYP TYP TYP

CCB

TXS0108E

= 5 V

ns

Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback 7

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TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

SCES642 – DECEMBER 2007

SWITCHING CHARACTERISTICS

over recommended operating free-air temperature range, V

PARAMETER (INPUT UNIT

FROM

)

t

PHL

A B ns

t

PLH

t

PHL

B A ns

t

PLH

t

en

t

dis

t

rA

t

rB

t

fA

t

fB

t

SK(O)

OE A or B 200 200 200 200 ns
OE A or B 28.1 22 20.1 19.6 ns

A-port rise time ns

B-port rise time ns

A-port fall time

B-port fall time

Channel-to-channel 1 1 1 1.1 1

Max data rate A or B

(OUTPUT) CONDITIONS

skew

TO TEST

Push-pull driving 11 9.2 8.6 8.6
Open-drain driving 4 14.4 3.6 12.8 3.5 12.2 3.5 12
Push-pull driving 12 10 9.8 9.7
Open-drain driving 182 720 143 554 114 473 81 384
Push-pull driving 12.7 11.1 11 12
Open-drain driving 3.4 13.2 3.1 9.6 2.8 8.5 2.5 7.5
Push-pull driving 9.5 6.2 5.1 1.6
Open-drain driving 186 745 147 603 118 519 84 407

Push-pull driving

Push-pull driving 3.5 13.1 3 9.8 3.1 9 3.2 8.3
Open-drain driving 147 982 115 716 92 592 66 481
Push-pull driving 2.9 11.4 1.9 7.4 0.9 4.7 0.7 2.6
Open-drain driving 135 1020 91 756 58 653 20 370
Push-pull driving 2.3 9.9 1.7 7.7 1.6 6.8 1.7 6
Open-drain driving 2.4 10 2.1 7.9 1.7 7 1.5 6.2
Push-pull driving 2 8.7 1.3 5.5 0.9 3.8 0.8 3.1
Open-drain driving 1.2 11.5 1.3 8.6 1 9.6 0.5 7.7

Push-pull driving ns
Push-pull driving 40 60 60 50

Open-drain driving 1 1 1 1 1

= 1.5 V ± 0.1 V (unless otherwise noted)

CCA

V

= 1.8 V V

CCB

± 0.15 V ± 0.2 V ± 0.3 V ± 0.5 V

CCB

= 2.5 V V

CCB

= 3.3 V V

MIN MAX MIN MAX MIN MAX MIN MAX

CCB

= 5 V

ns

Mbp

s

8 Submit Documentation Feedback Copyright © 2007, Texas Instruments Incorporated

Product Folder Link(s): TXS0108E

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8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR

FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

SCES642 – DECEMBER 2007

SWITCHING CHARACTERISTICS

over recommended operating free-air temperature range, V

PARAMETER (INPUT UNIT

FROM

)

t

PHL

A B ns

t

PLH

t

PHL

B A ns

t

PLH

t

en

t

dis

t

rA

t

rB

t

fA

t

fB

t

SK(O)

OE A or B 200 200 200 200 ns
OE A or B 25.1 18.8 16.5 15.3 ns

A-port rise time ns

B-port rise time ns

A-port fall time

B-port fall time

Channel-to-channel 1 1 1 1

Max data rate A or B

(OUTPUT) CONDITIONS

skew

TO TEST

Push-pull driving 8.2 6.4 5.7 5.6
Open-drain driving 3.6 11.4 3.2 9.9 3.1 9.3 3.1 8.9
Push-pull driving 9 2.1 6.5 6.3
Open-drain driving 194 729 155 584 126 466 90 346
Push-pull driving 9.8 8 7.4 7
Open-drain driving 3.4 12.1 2.8 8.5 2.5 7.3 2.1 6.2
Push-pull driving 10.2 7 5.8 5
Open-drain driving 197 733 159 578 129 459 93 323

Push-pull driving

Push-pull driving 3.1 11.9 2.6 8.6 2.7 7.8 2.8 7.2
Open-drain driving 155 996 124 691 100 508 72 350
Push-pull driving 2.8 10.5 1.8 7.2 1.2 5.2 0.7 2.7
Open-drain driving 132 1001 106 677 73 546 32 323
Push-pull driving 2.1 8.8 1.6 6.6 1.4 5.7 1.4 4.9
Open-drain driving 2.2 9 1.7 6.7 1.4 5.8 1.2 5.2
Push-pull driving 2 8.3 1.3 5.4 0.9 3.9 0.7 3
Open-drain driving 0.8 10.5 0.7 10.7 1 9.6 0.6 7.8

Push-pull driving ns
Push-pull driving 40 60 60 60

Open-drain driving 1 1 1 1

= 1.8 V ± 0.15 V(unless otherwise noted)

CCA

V

= 1.8 V V

CCB

± 0.15 V ± 0.2 V ± 0.3 V ± 0.5 V

CCB

= 2.5 V V

CCB

= 3.3 V V

MIN MAX MIN MAX MIN MAX MIN MAX

CCB

TXS0108E

= 5 V

ns

Mbp

s

Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback 9

Product Folder Link(s): TXS0108E

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TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

SCES642 – DECEMBER 2007

SWITCHING CHARACTERISTICS

over recommended operating free-air temperature range, V

PARAMETER UNIT

t

PHL

t

PLH

t

PHL

t

PLH

t

en

t

dis

t

rA

t

rB

t

fA

t

fB

t

SK(O)

Max data rate A or B

FROM TO TEST

(INPUT) (OUTPUT) CONDITIONS

Push-pull driving 5 4 3.7

A B ns

Open-drain driving 2.4 6.9 2.3 6.3 2.2 5.8
Push-pull driving 5.2 4.3 3.9
Open-drain driving 149 592 125 488 93 368
Push-pull driving 5.4 4.7 4.2

B A ns

Open-drain driving 2.5 7.3 2.2 6 1.8 4.9
Push-pull driving 5.9 4.4 3.5

Open-drain driving 150 595 126 481 94 345
OE A or B 200 200 200 ns
OE A or B 15.7 12.9 11.2 ns

A-port rise time ns

B-port rise time ns

A-port fall time

B-port fall time

Push-pull driving

Push-pull driving 2 7.3 2.1 6.4 2.2 5.8

Open-drain driving 110 692 93 529 68 369

Push-pull driving 1.8 6.5 1.3 5.1 0.7 3.4

Open-drain driving 107 693 79 483 41 304

Push-pull driving 1.5 5.7 1.2 4.7 1.3 3.8

Open-drain driving 1.5 5.6 1.2 4.7 1.1 4

Push-pull driving 1.4 5.4 0.9 4.1 0.7 3

Open-drain driving 0.4 14.2 0.5 19.4 0.4 3

Channel-to-channel skew Push-pull driving 1 1.2 1 ns

Push-pull driving 60 60 60

Open-drain driving 1 1 1

= 2.5 V ± 0.2 V (unless otherwise noted)

CCA

V

= 2.5 V V

CCB

± 0.2 V ± 0.3 V ± 0.5 V

MIN MAX MIN MAX MIN MAX

= 3.3 V V

CCB

CCB

= 5 V

ns

Mbp

s

10 Submit Documentation Feedback Copyright © 2007, Texas Instruments Incorporated

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8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR

FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

SCES642 – DECEMBER 2007

SWITCHING CHARACTERISTICS

over recommended operating free-air temperature range, V

PARAMETER UNIT

t

PHL

t

PLH

t

PHL

t

PLH

t

en

t

dis

t

rA

t

rB

t

fA

t

fB

t

SK(O)

Max data rate A or B Mbps

FROM TO TEST

(INPUT) (OUTPUT) CONDITIONS

Push-pull driving 3.8 3.1

A B ns

Open-drain driving 2 5.3 1.9 4.8
Push-pull driving 3.9 3.5
Open-drain driving 111 439 87 352
Push-pull driving 4.2 3.8

B A ns

Open-drain driving 2.1 5.5 1.7 4.5
Push-pull driving 3.8 4.3

Open-drain driving 112 449 86 339
OE A or B 200 200 ns
OE A or B 11.9 9.8 ns

A-port rise time ns

B-port rise time ns

A-port fall time

B-port fall time

Push-pull driving

Push-pull driving 1.8 5.7 1.9 5

Open-drain driving 75 446 57 337

Push-pull driving 1.5 5 1 3.6

Open-drain driving 72 427 40 290

Push-pull driving 1.2 4.5 1.1 3.5

Open-drain driving 1.1 4.4 1 3.7

Push-pull driving 1.1 4.2 0.8 3.1

Open-drain driving 1 4.2 0.8 3.1

Channel-to-channel skew Push-pull driving 1 1 ns

Push-pull driving 60 60

Open-drain driving 1 1

= 3.3 V ± 0.3 V (unless otherwise noted)

CCA

V

= 3.3 V V

CCB

± 0.3 V ± 0.5 V

MIN MAX MIN MAX

CCB

TXS0108E

= 5 V

ns

OPERATING CHARACTERISTICS

TA=25 ° C

V

CCA

1.2 V 1.2 V 1.5 V 1.8 V 2.5 V 2.5 V 3.3 V

PARAMETER TEST CONDITIONS V

5 V 1.8 V 1.8 V 1.8 V 2.5 V 5 V 3.3 V to 5 V

TYP TYP TYP TYP TYP TYP TYP

A-port input, B-port 5.9 5.7 5.9 5.9 6.7 6.9 8
output

C

pdA

B-port input, A-port 10.2 10.3 9.9 9.7 9.7 9.4 9.8
output

A-port input, B-port 29.9 22.2 21.5 20.8 21 23.4 23
output

C

pdB

B-port input, A-port 22.9 16.7 16.7 16.8 17.8 20.8 20.9

CL= 0, f = 10 MHz,
tr= tf= 1ns,
OE = V
enabled)

(outputs

CCA

output
A-port input, B-port 0.01 0.01 0.01 0.01 0.01 0.01 0.01

output

C

pdA

B-port input, A-port 0.06 0.01 0.01 0.01 0.01 0.01 0.01
output

A-port input, B-port 0.06 0.01 0.01 0.01 0.01 0.03 0.02
output

C

pdB

B-port input, A-port 0.06 0.01 0.01 0.01 0.01 0.03 0.02

CL= 0, f = 10 MHz,
tr= tf= 1ns,
OE = GND (outputs
disabled)

output

CCB

UNIT

pF

pF

Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback 11

Product Folder Link(s): TXS0108E

www.ti.com

V

CCA

A

V

CCB

One-Shot

One-Shot

N1

P1

R1

R2

Translator

One-Shot

One-Shot

N2

OS1

OS2

OS4

OS3

T2

T1

RpubRpua

Bias

Npass

B

P2

Translator

TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

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.

When transmitting data from A to B ports, during a rising edge the One-Shot (OS3) turns on the PMOS transistor

Figure 1. Architecture of a TXS01xx Cell

(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 Submit Documentation Feedback Copyright © 2007, Texas Instruments Incorporated

Product Folder Link(s): TXS0108E

www.ti.com

TXS0108E

8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR

FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

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 V
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 (t

dis

actually get disabled (Hi-Z). The enable time (t
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 (R
R

and R

pua

output is driving high. R

have a value of 40 k Ω when the output is driving low. R

pub

and R

pua

≤ V

CCA

at all times. During power-up sequencing, V

CCB

≥ V

CCA

) indicates the delay between the time when OE goes low and when the outputs

) indicates the amount of time the user must allow for the

en

) to V

pua

are disabled when OE = Low.

pub

and each B-port I/O has a pull-up resistor (R

CCA

and R

pua

have a value of 4 k Ω when the

pub

does not

CCB

) to V

pub

.

CCB

Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback 13

Product Folder Link(s): TXS0108E

www.ti.com

V

OH

V

OL

From Output

Under Test

LOAD CIRCUIT FOR ENABLE/DISABLE

TIME MEASUREMENT

S1

2 x V

CCO

Open

50 kΩ

t

PLH

t

PHL

Output

Control

(low-level

enabling)

Output

Waveform 1

S1 at 2 xV

CCO

(see Note B)

Output

Waveform 2

S1 Open

(see Note B)

t

PZL

t

PZH

t

PLZ

t

PHZ

V

CCA

/2V

CCA

/2

V

CCI

0 V

V

CCO

/2

V

OH

V

OL

0 V

0.1 x V

CCO

V

CCO

/2

0.9 x V

CCO

V

CCO

/2

0 V

V

CCI

0 V

V

CCI

/2 V

CCI

/2

t

w

Input

V

CCA

V

CCO

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

VOLTAGE WAVEFORMS

PULSE DURATION

Output

Input

t

PZL/tPLZ

t

PHZ/tPZH

2 x V

CCO

Open

TEST S1

50 kΩ

1 MΩ

15 pF

15 pF

DATA RATE, PULSE DURATION, PROPAGATION DELAY,

OUTPUT RISE AND FALL TIME MEASUREMENT USING

A PUSH-PULL DRIVER

V

CCO

V

CCI

TXS0108E

IN

OUT

1 MΩ

15 pF

DATA RATE, PULSE DURATION, PROPAGATION DELAY,

OUTPUT RISE AND FALL TIME MEASUREMENT USING

AN OPEN-DRAIN DRIVER

V

CCO

V

CCI

IN

OUT

V

CCO

/2 V

CCO

/2

0.9 x V

CCO

V

CCO

/2

t

r

0.1 x V

CCO

t

f

TXS0108E

TXS0108E
8-BIT BIDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR
FOR OPEN-DRAIN AND PUSH-PULL APPLICATIONS

SCES642 – DECEMBER 2007

PARAMETER MEASUREMENT INFORMATION

A. CLincludes 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.

and t

PLZ

and t

PZL

and t

PLH

is the V

CCI
CCO

are the same as t

PHZ

are the same as ten.

PZH

are the same as tpd.

PHL

CC

is the V

CC

associated with the input port.

associated with the output port.

D. The outputs are measured one at a time, with one transition per measurement.
E. t
F. t
G. t
H. V
I. V
J. All parameters and waveforms are not applicable to all devices.

14 Submit Documentation Feedback Copyright © 2007, Texas Instruments Incorporated

.

dis

Figure 2. Load Circuit and Voltage Waveforms

Product Folder Link(s): TXS0108E

PACKAGE OPTION ADDENDUM

www.ti.com

30-Jan-2008

PACKAGING INFORMATION

Orderable Device Status

(1)

Package

Type

Package
Drawing

Pins Package

Qty

Eco Plan

TXS0108EDGVR PREVIEW TVSOP DGV 20 2000 TBD Call TI Call TI

TXS0108EGXYR PREVIEW BGA MI

GXY 20 2500 TBD Call TI Call TI

CROSTA

R JUNI

OR

TXS0108EPWR ACTIVE TSSOP PW 20 2000 Green (RoHS &

no Sb/Br)

TXS0108EPWRG4 ACTIVE TSSOP PW 20 2000 Green (RoHS &

no Sb/Br)

TXS0108ERGYR PREVIEW QFN RGY 20 1000 TBD Call TI Call TI

TXS0108EZXYR ACTIVE BGA MI

CROSTA

ZXY 20 2500 Green (RoHS &

no Sb/Br)

R JUNI

OR

(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)

Lead/Ball Finish MSL Peak Temp

CU NIPDAU Level-1-260C-UNLIM

CU NIPDAU Level-1-260C-UNLIM

SNAGCU Level-1-260C-UNLIM

(3)

(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

TAPE AND REEL BOX INFORMATION

12-Feb-2008

Device Package Pins Site Reel

Diameter

(mm)

TXS0108EPWR PW 20 SITE 41 330 16 6.95 7.1 1.6 8 16 Q1

TXS0108EZXYR ZXY 20 SITE 60 330 12 2.8 3.3 1.0 4 12 Q2

Reel

Width

(mm)

A0 (mm) B0 (mm) K0 (mm) P1

(mm)W(mm)

Pin1

Quadrant

Pack Materials-Page 1

PACKAGE MATERIALS INFORMATION

www.ti.com

12-Feb-2008

Device Package Pins Site Length (mm) Width (mm) Height (mm)

TXS0108EPWR PW 20 SITE 41 346.0 346.0 33.0

TXS0108EZXYR ZXY 20 SITE 60 342.9 338.1 20.64

Pack Materials-Page 2

MECHANICAL DATA

MTSS001C – JANUARY 1995 – REVISED FEBRUARY 1999

PW (R-PDSO-G**) PLASTIC SMALL-OUTLINE PACKAGE

14 PINS SHOWN

0,65

1,20 MAX

14

0,30

0,19

8

4,50
4,30

PINS **

7

Seating Plane

0,15
0,05

8

1

A

DIM

6,60
6,20

14

0,10

M

0,10

0,15 NOM

0°–8°

2016

Gage Plane

24

0,25

0,75
0,50

28

A MAX

A MIN

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

3,10

2,90

5,10

4,90

5,10

4,90

6,60

6,40

7,90

7,70

9,80

9,60

4040064/F 01/97

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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