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**TI-SN65LVEL11：3.3V ECL 1:2 扩展缓冲器** TI-SN65LVEL11是一款专为高速数据传输设计的3.3V ECL（Emitter Coupled Logic）1:2扩展缓冲器。这款器件在输入处于开路状态时，能保持已知的逻辑电平，确保了信号的稳定传输。其性能优越，可替代如MC10LVEL11和MC100LVEL11等同类产品。 ### 主要特点 1. **1:2 ECL扩展缓冲器**：该器件能够将单个ECL输入信号转换为两个独立的ECL输出信号，用于驱动更多的负载或延长信号传输距离。 2. **操作范围**：SN65LVEL11的工作电源电压范围是3.0V到3.8V，负电源电压VEE则为0V。对于负ECL（NECL）应用，VCC可以设置为0V，而VEE在-3.0V至-3.8V之间。 3. **低延迟**：具有265ps的典型传播延迟，适合高频率应用，支持超过2.0GHz的时钟频率。 4. **极低的时钟偏移**：输出之间的最大偏移仅为5ps，确保了精确同步的信号传输。 5. **确定性的输出值**：即使输入端为开路或等于VEE，仍能保持确定的输出状态。 6. **内置温度补偿**：通过内置的电路设计，可以补偿因温度变化对信号质量的影响。 7. **输入拉下电阻**：内置输入拉下电阻，简化了外部电路设计。 8. **封装选项**：提供行业标准的SOIC-8和TSSOP-8封装，便于安装和互换性。 9. **信号级别转换**：适用于数据和时钟信号在背板上的传输以及不同信号级别的转换。 ### 引脚功能 - **D, DP**：ECL/ECL数据输入引脚。 - **Q0, Q0, Q1, Q1**：ECL/ECL输出引脚，每个输入对应两个输出，以实现1:2的扩展。 - **VCC**：正电源引脚，提供3.0V至3.8V的电源电压。 - **VEE**：负电源引脚，为负电压电源，通常设置为0V。 ### 订单信息 - **PART NUMBER**：包括DSN65LVEL11和DGK选项，分别对应SOIC和TSSOP封装，引脚电镀材料为NiPdAu。 - **注意**：非引脚式设备可能不立即可用，需联系TI销售代表获取更多信息。 ### 应用场景 - **数据和时钟传输**：在高速数据传输系统中，如背板通信，确保信号完整性和稳定性。 - **信号级别转换**：在不同信号标准的系统间进行接口转换，如在ECL和非ECL系统间。 ### 技术支持与可靠性 TI-SN65LVEL11符合Texas Instruments的标准保修条款，生产过程虽然可能不包含所有参数的测试，但产品符合规格要求。对于在关键应用中的使用，TI半导体产品的可用性和免责声明可在数据手册的末尾找到。最新的生产数据信息以出版日期为准，并受版权保护。 TI-SN65LVEL11是一款高性能、低延迟的ECL扩展缓冲器，适用于高速通信和数据处理系统，尤其在需要高精度时钟同步和信号完整性的情况下。其封装选项和内置功能设计使其在各种应用场景中具有广泛的应用潜力。

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FEATURES

DESCRIPTION

PINOUT ASSIGNMENT

APPLICATIONS

1 8

2 7

3 6

4 5

SN65LVEL11

www.ti.com

............................................................................................................................................................................................ SLLS927 – DECEMBER 2008

3.3 V ECL 1:2 Fanout Buffer

• 1:2 ECL Fanout Buffer

• Operating Range

The SN65LVEL11 is a fully differential 1:2 ECL fanout

buffer. The device includes circuitry to maintain a

– PECL V

= 3.0 V to 3.8 V With

known logic level when inputs are in open condition.

= 0 V

The SN65LVEL11 is functionally equivalent to

– NECL: V

= 0 V with V

= – 3.0

SN65EL11 with improved performance. The

to – 3.8V SN65LVEL11 is housed in an industry standard

SOIC-8 package and is also available in the

• 5 ps Skew Between Outputs

TSSOP-8 package option.

• Support for Clock Frequencies > 2.0 GHz

• 265 ps Typical Propagation Delay

• Deterministic Output Value for Open Input

Conditions or When Inputs = V

• Built-in Temperature Compensation

• Drop in Compatible to MC10LVEL11,

MC100LVEL11

• Built-In Input Pull Down Resistors

• Data and Clock Transmission Over Backplane

• Signaling Level Conversion

Table 1. Pin Description

PIN FUNCTION

D, D PECL/ECL data inputs

, Q

PECL/ECL outputs

Positive supply

Negative supply

ORDERING INFORMATION

(1)

PART NUMBER PART MARKING PACKAGE LEAD FINISH

SN65LVEL11D SN65LVEL11 SOIC NiPdAu

SN65LVEL11DGK SN65LVEL11 SOIC-TSSOP NiPdAu

(1) Leaded device options not initially available. Contact TI sales representative for further details.

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.

ABSOLUTE MAXIMUM RATINGS

(1)

POWER DISSIPATION RATINGS

THERMAL CHARACTERISTICS

KEY ATTRIBUTES

SN65LVEL11

SLLS927 – DECEMBER 2008 ............................................................................................................................................................................................

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.

PARAMETER CONDITION VALUE UNIT

Absolute PECL mode supply voltage, V

= 0 V 6 V

Absolute NECL mode power supply, V

= 0 V – 6 V

PECL mode input voltage V

= 0 V; V

≤ VCC 6 V

NECL mode input voltage V

= 0 V; V

≥ V

– 6 V

Continuous 50

Output current mA

Surge 100

Operating temperature range – 40 to 85 ° C

Storage temperature range – 65 to 150 ° C

(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.

POWER RATING THERMAL RESISTANCE, DERATING FACTOR POWER RATING

CIRCUIT BOARD

JUNCTION TO AMBIENT

PACKAGE T

< 25 ° C T

> 25 ° C T

= 85 ° C

MODEL

NO AIRFLOW

(mW) (mW/ ° C) (mW)

SOIC Low-K 719 139 7 288

High-K 840 119 8 336

SOIC-TSSOP Low-K 469 213 5 188

High-K 527 189 5 211

PARAMETER PACKAGE VALUE UNIT

Junction-to Board Thermal Resistance SOIC 79 ° C/W

SOIC-TSSOP 120

Junction-to Case Thermal Resistance SOIC 98 ° C/W

SOIC-TSSOP 74

CHARACTERISTICS VALUE

Internal input pull down resistor 75 k Ω

Moisture sensitivity level Level 1

Flammability rating (Oxygen Index: 28 to 34) UL 94 V-0 at 0.125 in

ESD-HBM 4 kV

ESD-machine model 200 V

ESD-charge device model 2 kV

Meets or exceeds JEDEC Spec EIA/JESD78 latchup test

Product Folder Link(s): SN65LVEL11

LVPECL DC CHARACTERISTICS

(1)

= 3.3 V, V

= 0.0 V

(2)

LVPNECL DC CHARACTERISTICS

(1)

= – 3.3 V; V

= 0.0 V;)

(2)

SN65LVEL11

www.ti.com

– 40 ° C 25 ° C 85 ° C

CHARACTERISTICS UNIT

MIN TYP MAX MIN TYP MAX MIN TYP MAX

Power Supply Current 20 25 20 25 21 25 mA

Output HIGH Voltage

(3)

2215 2420 2215 2286 2420 2215 2420 mV

Output LOW Voltage

(3)

1470 1680 1470 1584 1680 1470 1680 mV

Input High Voltage (Single-Ended) 2135 2420 2135 2420 2135 2420 mV

Input LOW Voltage (Single-Ended) 1490 1825 1490 1825 1490 1825 mV

IHCMR

Input HIGH voltage common mode range V

(Differential)

(4)

< 500 mV 1.2 3.1 1.1 3.1 1.1 3.1

> 500 mV 1.4 3.1 1.3 3.1 1.3 3.1

Input HIGH Current 150 150 150 µ A

Input LOW current

D 0.5 0.5 0.5 µ A

D – 600 – 600 – 600

(1) Device will meet the specifications after thermal balance has been established when mounted in a socket or printed circuit board with

maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating temperature

range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied

individually under normal operating conditions and not valid simultaneously.

(2) Input and output parameters vary 1:1 with V

. V

can vary ± 0.3 V

(3) Outputs are terminated through a 50 Ω resistor to V

– 2.0 V.

(4) V

IHCMR

min varies 1:1 with V

, V

IHCMR

max varies 1:1 with V

. The V

IHCMR

range is referenced to the most positive side of the

differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies

between V

min and 1 V.

– 40 ° C 25 ° C 85 ° C

CHARACTERISTICS UNIT

MIN TYP MAX MIN TYP MAX MIN TYP MAX

Power supply current 20 25 20 25 21 25 mA

Output HIGH voltage

(3)

– 1085 – 880 – 1085 – 1013 – 880 – 1085 – 880 mV

Output LOW voltage

(3)

– 1830 – 1620 – 1830 – 1722 – 1620 – 1830 – 1620 mV

Input high voltage (Single-Ended) – 1165 – 880 – 1165 – 880 – 1165 – 880 mV

Input LOW voltage (Single-Ended) – 1810 – 1475 – 1810 – 1475 – 1810 – 1475 mV

IHCMR

Input HIGH voltage common mode range V

(Differential)

(4)

< 500 mV – 2.1 – 0.2 – 2.2 – 0.2 – 2.2 – 0.2

> 500 mV – 1.9 – 0.2 – 2.0 – 0.2 – 2.0 – 0.2

Input HIGH current 150 150 150 µ A

Input LOW current

D 0.5 0.5 0.5 µ A

D – 600 – 600 – 600

(1) Device will meet the specifications after thermal balance has been established when mounted in a socket or printed circuit board with

maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating temperature

range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied

individually under normal operating conditions and not valid simultaneously.

(2) Input and output parameters vary 1:1 with V

. V

can vary ± 0.3 V.

(3) Outputs are terminated through a 50 Ω resistor to V

– 2.0 V.

(4) VIHCMR min varies 1:1 with V

, V

IHCMR

max varies 1:1 with V

. The V

IHCMR

range is referenced to the most positive side of the

differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies

between VPP min and 1 V.

Product Folder Link(s): SN65LVEL11

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