SN74AVC16827

現行

具有 3 態輸出的 20 通道 1.2-V 至 3.6-V 緩衝器

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產品規格表

document-pdfAcrobat 20-Bit Buffer/Driver With 3-State Outputs datasheet (Rev. I) (英文)

SN74AVC16827

現行

產品規格表

立即訂購

產品詳細資料

Technology family

AVC

Number of channels

20

IOL (max) (mA)

12

Supply current (max) (µA)

40

IOH (max) (mA)

-12

Input type

Standard CMOS

Output type

3-State

Features

Balanced outputs, Over-voltage tolerant inputs, Partial power down (Ioff), Ultra high speed (tpd <5ns)

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Technology family

AVC

Number of channels

20

IOL (max) (mA)

12

Supply current (max) (µA)

40

IOH (max) (mA)

-12

Input type

Standard CMOS

Output type

3-State

Features

Balanced outputs, Over-voltage tolerant inputs, Partial power down (Ioff), Ultra high speed (tpd <5ns)

Rating

Catalog

Operating temperature range (°C)

-40 to 85

TSSOP (DGG)

56

113.4 mm² (14 mm × 8.1 mm)

TVSOP (DGV)

56

72.32 mm² (11.3 mm × 6.4 mm)

Member of the Texas Instruments Widebus^TM Family
EPIC^TM (Enhanced-Performance Implanted CMOS) Submicron Process
DOC^TM (Dynamic Output Control) Circuit Dynamically Changes Output Impedance, Resulting in Noise Reduction Without Speed Degradation
Less Than 2-ns Maximum Propagation Delay at 2.5-V and 3.3-V V_CC
Dynamic Drive Capability Is Equivalent to Standard Outputs With I_OH and I_OL of ±24 mA at 2.5-V V_CC
Overvoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode Data Communications
I_off Supports Partial-Power-Down Mode Operation
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
Package Options Include Plastic Thin Shrink Small-Outline (DGG) and Thin Very Small-Outline (DGV) Packages
DOC, EPIC, and Widebus are trademarks of Texas Instruments.

Member of the Texas Instruments Widebus^TM Family
EPIC^TM (Enhanced-Performance Implanted CMOS) Submicron Process
DOC^TM (Dynamic Output Control) Circuit Dynamically Changes Output Impedance, Resulting in Noise Reduction Without Speed Degradation
Less Than 2-ns Maximum Propagation Delay at 2.5-V and 3.3-V V_CC
Dynamic Drive Capability Is Equivalent to Standard Outputs With I_OH and I_OL of ±24 mA at 2.5-V V_CC
Overvoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode Data Communications
I_off Supports Partial-Power-Down Mode Operation
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
Package Options Include Plastic Thin Shrink Small-Outline (DGG) and Thin Very Small-Outline (DGV) Packages
DOC, EPIC, and Widebus are trademarks of Texas Instruments.

A Dynamic Output Control (DOC) circuit is implemented, which, during the transition, initially lowers the output impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1 shows typical V_OL vs I_OL and V_OH vs I_OH curves to illustrate the output impedance and drive capability of the circuit. At the beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is equivalent to a high-drive standard-output device. For more information, refer to the TI application reports, AVC Logic Family Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC^TM) Circuitry Technology and Applications, literature number SCEA009.

This 20-bit noninverting buffer/driver is operational at 1.2-V to 3.6-V V_CC, but is designed specifically for 1.65-V to 3.6-V V_CC operation.

The SN74AVC16827 is composed of two 10-bit sections with separate output-enable signals. For either 10-bit buffer section, the two output-enable (1OE1\ and 1OE2\ or 2OE1\ and 2OE2\) inputs must both be low for the corresponding Y outputs to be active. If either output-enable input is high, the outputs of that 10-bit buffer section are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The SN74AVC16827 is characterized for operation from -40°C to 85°C.

A Dynamic Output Control (DOC) circuit is implemented, which, during the transition, initially lowers the output impedance to effectively drive the load and, subsequently, raises the impedance to reduce noise. Figure 1 shows typical V_OL vs I_OL and V_OH vs I_OH curves to illustrate the output impedance and drive capability of the circuit. At the beginning of the signal transition, the DOC circuit provides a maximum dynamic drive that is equivalent to a high-drive standard-output device. For more information, refer to the TI application reports, AVC Logic Family Technology and Applications, literature number SCEA006, and Dynamic Output Control (DOC^TM) Circuitry Technology and Applications, literature number SCEA009.

This 20-bit noninverting buffer/driver is operational at 1.2-V to 3.6-V V_CC, but is designed specifically for 1.65-V to 3.6-V V_CC operation.

The SN74AVC16827 is composed of two 10-bit sections with separate output-enable signals. For either 10-bit buffer section, the two output-enable (1OE1\ and 1OE2\ or 2OE1\ and 2OE2\) inputs must both be low for the corresponding Y outputs to be active. If either output-enable input is high, the outputs of that 10-bit buffer section are in the high-impedance state.

To ensure the high-impedance state during power up or power down, OE\ should be tied to V_CCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

This device is fully specified for partial-power-down applications using I_off. The I_off circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

The SN74AVC16827 is characterized for operation from -40°C to 85°C.

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