SN74AVC245PWLE

更新时间： 2024-09-16 12:58:11

品牌	Logo	应用领域
德州仪器 - TI		总线收发器输出元件
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11页	159K
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SN74AVC245PWLE 数据手册

SN74AVC245

OCTAL BUS TRANSCEIVER

WITH 3-STATE OUTPUTS

SCES263B – APRIL 1999 – REVISED DECEMBER 1999

DOC (Dynamic Output Control) Circuit

Dynamically Changes Output Impedance,

Resulting in Noise Reduction Without

Speed Degradation

Overvoltage-Tolerant Inputs/Outputs Allow

Mixed-Voltage-Mode Data Communications

Supports Partial-Power-Down Mode

off

Operation

EPIC (Enhanced-Performance Implanted

CMOS) Submicron Process

Package Options Include Plastic

Small-Outline (DW), Thin Very

Small-Outline (DGV), and Thin Shrink

Small-Outline (PW) Packages

Less Than 2-ns Maximum Propagation

Delay at 2.5-V and 3.3-V V

Dynamic Drive Capability Is Equivalent to

Standard Outputs With I and I of

±24 mA at 2.5-V V

description

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 vs I and V

vs I

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 )

Circuitry Technology and Applications, literature number SCEA009.

3.2

= 25°C

Process = Nominal

2.8 Process = Nominal

2.8

2.4

2.0

1.6

1.2

0.8

0.4

2.4

= 3.3 V

2.0

1.6

1.2

0.8

= 2.5 V

= 1.8 V

= 3.3 V

= 2.5 V

0.4

= 1.8 V

–128 –112 –96 –80 –64

–32

–160 –144

–48

– Output Current – mA

–16

85 102 119 136 153 170

– Output Current – mA

Figure 1. Output Voltage vs Output Current

This octal bus transceiver is operational at 1.2-V to 3.6-V V , but is designed specifically for 1.65-V to 3.6-V

operation.

The SN74AVC245 is designed for asynchronous communication between data buses. The device transmits

data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the

direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are

effectively isolated.

This device can be used as two 8-bit transceivers or one 16-bit transceiver. It allows data transmission from the

A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR)

input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated.

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.

DOC, EPIC, and Widebus are trademarks of Texas Instruments Incorporated.

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...11

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与SN74AVC245PWLE相关器件

型号	品牌	获取价格	描述	数据表
SN74AVC24T245	TI	获取价格	24-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPU
SN74AVC24T245_06	TI	获取价格	24-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPU
SN74AVC24T245_V01	TI	获取价格	24-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation And 3-State Outpu
SN74AVC24T245GRG/ZRG	TI	获取价格	24-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation And 3-State Outpu
SN74AVC24T245GRGR	TI	获取价格	24-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPU
SN74AVC24T245NMU	TI	获取价格	24-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation And 3-State Outpu
SN74AVC24T245NMUR	TI	获取价格	24-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation And 3-State Outpu
SN74AVC24T245ZRG	TI	获取价格	24-Bit Dual-Supply Bus Transceiver with Configurable Voltage Translation And 3-State Outpu
SN74AVC24T245ZRGR	TI	获取价格	24-BIT DUAL-SUPPLY BUS TRANSCEIVER WITH CONFIGURABLE VOLTAGE TRANSLATION AND 3-STATE OUTPU
SN74AVC2T244	TI	获取价格	2-BIT UNDIRECTIONAL VOLTAGE-LEVEL TRANSLATOR

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