TXB0104-电平转换器_RS0104资源-CSDN文库

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### TXB0104-电平转换器 #### 产品概述 TXB0104是一款非反向4位双向电压电平转换器，它采用两个独立且可配置的电源轨来实现不同电压间的转换功能。这款电平转换器支持A端口的供电电压范围为1.2V至3.6V，而B端口则可以在1.65V到5.5V之间变化。这样的设计使得TXB0104能够灵活地在多种常见的电压节点间进行转换，包括但不限于1.2V、1.5V、1.8V、2.5V、3.3V以及5V等。 #### 主要特性 - **双电源轨设计**：TXB0104的A端口可以接受1.2V到3.6V的供电电压，而B端口则支持1.65V至5.5V之间的电压，从而实现广泛电压范围内的转换。 - **自动方向感应功能**：该电平转换器具备自动检测数据传输方向的能力，无需额外的控制逻辑即可确保数据正确传输。 - **±15kV ESD保护**：TXB0104提供了优秀的静电放电（ESD）保护性能，符合或超过JESD22标准中的相关要求，确保了设备在恶劣环境下的可靠运行。 - **VCC隔离特性**：如果任一VCC输入处于地电位（GND），所有输出将进入高阻态，避免了意外损坏。 - **低功耗**：最大工作电流仅为5μA，适用于对功耗有严格要求的应用场景。 - **IOFF支持部分断电模式**：当设备进入部分断电模式时，IOFF电路会禁用输出，防止电流倒流，保护设备安全。 - **OE输入电路参照VCCA供电**：输出使能（OE）输入电路由VCCA供电，便于与其他组件集成。 #### 应用场景 - **耳机**: 适用于耳机等便携式音频设备中，实现在不同电压设备间的信号转换。 - **智能手机**: 支持智能手机内部不同电压元器件间的信号通信与转换。 - **平板电脑**: 平板电脑内部不同电压元器件之间的电平转换需求。 - **台式机**: 台式计算机中用于各种电压转换，如连接器接口、扩展卡等。 - **其他电子设备**: 如便携式医疗设备、物联网设备等需要电压转换的应用。 #### 工作原理 TXB0104的工作原理是通过监测两个端口的电压差来自动确定数据传输的方向，并根据这一信息调整输出状态，以确保数据的正确传输。当OE输入为低电平时，所有输出被置于高阻态；为了保证在上电或断电过程中输出也能保持在高阻态，建议将OE引脚通过下拉电阻接地。此外，该芯片还具有低功耗特性，适用于需要严格控制功耗的移动设备。 #### 封装形式 TXB0104提供多种封装选项，以满足不同的设计需求： - **UQFN(12)**：尺寸为2.00mm x 1.70mm - **SOIC(14)**：尺寸为8.65mm x 3.91mm - **BGA MICROSTAR (12)**：尺寸为2.00mm x 2.50mm - **TSSOP(14)**：尺寸为5.00mm x 4.40mm - **VQFN(14)**：尺寸为3.50mm x 3.50mm - **DSBGA(12)**：尺寸为1.40mm x 1.90mm 以上封装形式的选择取决于具体应用的需求，如空间限制、散热要求等。 #### 总结 TXB0104作为一款高性能的电平转换器，在设计上兼顾了灵活性、可靠性和低功耗的特点，适用于多种应用场景，特别是在移动设备和其他对功耗敏感的产品中有着广泛的应用前景。通过其独特的自动方向感应技术和广泛的电压支持范围，TXB0104能够有效地解决不同电压设备间的信号兼容问题，提高系统的整体性能和稳定性。

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TXB0104

SCES650G –APRIL 2006–REVISED NOVEMBER 2014

TXB0104 4-Bit Bidirectional Voltage-level Translator With Automatic Direction Sensing

and ±15-kV ESD Protection

1 Features 3 Description

This 4-bit non-inverting translator uses two separate

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

configurable power-supply rails. The A port is

Port (V

CCA

≤ V

CCB

)

designed to track V

CCA

. V

CCA

accepts any supply

• V

Isolation Feature – If Either V

Input Is at

voltage from 1.2 V to 3.6 V. The B port is designed to

GND, All Outputs Are in the High-Impedance

track V

CCB

. V

CCB

accepts any supply voltage from

State

1.65 V to 5.5 V. This allows for universal low-voltage

bidirectional translation between any of the 1.2-V,

• OE Input Circuit Referenced to V

CCA

1.5-V, 1.8-V, 2.5-V, 3.3-V, and 5-V voltage nodes.

• Low Power Consumption, 5-μA Max I

CCA

should not exceed V

CCB

• I

off

Supports Partial-Power-Down Mode Operation

When the output-enable (OE) input is low, all outputs

• Latch-Up Performance Exceeds 100 mA Per

are placed in the high-impedance state. To ensure

JESD 78, Class II

the high-impedance state during power up or power

• ESD Protection Exceeds JESD 22

down, OE should be tied to GND through a pulldown

resistor; the minimum value of the resistor is

– A Port

determined by the current-sourcing capability of the

– 2500-V Human-Body Model (A114-B)

driver.

– 1500-V Charged-Device Model (C101)

The TXB0104 is designed so that the OE input circuit

– B Port

is supplied by V

CCA

– ±15-kV Human-Body Model (A114-B)

This device is fully specified for partial-power-down

– 1500-V Charged-Device Model (C101)

applications using I

off

. The I

off

circuitry disables the

outputs, preventing damaging current backflow

2 Applications

through the device when it is powered down.

• Headset

Device Information

(1)

• Smartphone

PART NUMBER PACKAGE BODY SIZE (NOM)

• Tablet

UQFN (12) 2.00 mm x 1.70 mm

• Desktop PC

SOIC (14) 8.65 mm x 3.91 mm

BGA

MICROSTAR 2.00 mm x 2.50 mm

TXB0104

JUNIOR (12)

TSSOP (14) 5.00 mm x 4.40 mm

VQFN (14) 3.50 mm x 3.50 mm

DSBGA (12) 1.40 mm x 1.90 mm

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

Typical Application Block Diagram for TXB010X

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TXB0104

SCES650G –APRIL 2006–REVISED NOVEMBER 2014

www.ti.com

Table of Contents

6.16 Operating Characteristics...................................... 10

1 Features.................................................................. 1

6.17 Typical Characteristics.......................................... 11

2 Applications ........................................................... 1

7 Parameter Measurement Information ................ 12

3 Description ............................................................. 1

8 Detailed Description............................................ 13

4 Revision History..................................................... 2

8.1 Overview ................................................................. 13

5 Pin Configuration and Functions......................... 3

8.2 Functional Block Diagram ....................................... 13

6 Specifications......................................................... 5

8.3 Feature Description................................................. 14

6.1 Absolute Maximum Ratings ..................................... 5

8.4 Device Functional Modes........................................ 15

6.2 Handling Ratings....................................................... 5

9 Application and Implementation ........................ 16

6.3 Recommended Operating Conditions....................... 5

9.1 Application Information............................................ 16

6.4 Thermal Information.................................................. 6

9.2 Typical Application ................................................. 16

6.5 Electrical Characteristics .......................................... 6

10 Power Supply Recommendations ..................... 18

6.6 Timing Requirements: V

CCA

= 1.2 V......................... 7

11 Layout................................................................... 18

6.7 Timing Requirements: V

CCA

= 1.5 V ± 0.1 V ............ 7

11.1 Layout Guidelines ................................................. 18

6.8 Timing Requirements: V

CCA

= 1.8 V ± 0.15 V .......... 7

11.2 Layout Example .................................................... 18

6.9 Timing Requirements: V

CCA

= 2.5 V ± 0.2 V ............ 7

6.10 Timing Requirements: V

CCA

= 3.3 V ± 0.3 V .......... 8 12 Device and Documentation Support ................. 19

6.11 Switching Characteristics: V

CCA

= 1.2 V................. 8 12.1 Trademarks........................................................... 19

6.12 Switching Characteristics: V

CCA

= 1.5 V ± 0.1 V .... 8 12.2 Electrostatic Discharge Caution............................ 19

6.13 Switching Characteristics: V

CCA

= 1.8 V ± 0.15 V .. 8 12.3 Glossary................................................................ 19

6.14 Switching Characteristics: V

CCA

= 2.5 V ± 0.2 V .... 9

13 Mechanical, Packaging, and Orderable

Information ........................................................... 19

6.15 Switching Characteristics: V

CCA

= 3.3 V ± 0.3 V .... 9

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision F (March 2012) to Revision G Page

• Added Pin Configuration and Functions section, Handling Rating table, Feature Description section, Device

Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout

section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information

section ................................................................................................................................................................................... 1

Changes from Revision E (February 2010) to Revision F Page

• Added notes to pin out graphics............................................................................................................................................. 3

Product Folder Links: TXB0104

TXB0104

www.ti.com

SCES650G –APRIL 2006–REVISED NOVEMBER 2014

6 Specifications

6.1 Absolute Maximum Ratings

(1)

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

MIN MAX UNIT

CCA

–0.5 4.6

Supply voltage range V

CCB

–0.5 6.5

A port –0.5 4.6

Input voltage range V

B port –0.5 6.5

A port –0.5 4.6

Voltage range applied to any output in the high-impedance or

power-off state

B port -0.5 6.5

A port –0.5 V

CCA

+ 0.5

Voltage range applied to any output in the high or low

state

(2)

B port –0.5 V

CCB

+ 0.5

Input clamp current V

< 0 –50 mA

Output clamp current V

< 0 –50 mA

Continuous output current –50 50 mA

Continuous current through V

CCA

, V

CCB

, or GND –100 100 mA

(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 value of V

CCA

and V

CCB

are provided in the recommended operating conditions table.

6.2 Handling Ratings

MIN MAX UNIT

stg

Storage temperature range –65 150 °C

Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all

2.5

pins

(1)

, A Port

Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all

–15 15

pins

(1)

, B Port

(ESD)

Electrostatic discharge V

Charged device model (CDM), per JEDEC specification

1.5

JESD22-C101, all pins

(2)

, A Port

Charged device model (CDM), per JEDEC specification

1.5

JESD22-C101, all pins

(2)

, B Port

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

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

(1)(2)

CCA

CCB

MIN MAX UNIT

CCA

1.2 3.6

Supply voltage V

CCB

1.65 5.5

Data inputs 1.2 V to 3.6 V 1.65 V to 5.5 V V

CCI

× 0.65

(3)

CCI

High-level input voltage V

OE 1.2 V to 3.6 V 1.65 V to 5.5 V V

CCA

× 0.65 5.5

Data inputs 1.2 V to 5.5 V 1.65 V to 5.5 V 0 V

CCI

× 0.35

(3)

Low-level input voltage V

OE 1.2 V to 3.6 V 1.65 V to 5.5 V 0 V

CCA

× 0.35

Voltage range applied to any A-port 0 3.6

output in the high-impedance 1.2 V to 3.6 V 1.65 V to 5.5 V V

B-port 0 5.5

or power-off state

(1) The A and B sides of an unused data I/O pair must be held in the same state, i.e., both at V

CCI

or both at GND.

(2) V

CCA

must be less than or equal to V

CCB

and must not exceed 3.6 V.

(3) V

CCI

is the supply voltage associated with the input port.

Product Folder Links: TXB0104

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