可配置双电源八路收发器

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74LVXC3245 是一款 24 引脚双电源、八路可配置电压接口收发器,适用于 PCMCIA 和其他实时可配置 I/O 应用。VCCA 引脚接受 3V 供应电平;A 端口为专用 3V 端口。VCCB 引脚接受 3V-5V 供应电平。B 端口配置为跟踪 VCCB 供应电平。VCCB 引脚上的 5V 电平会在 5V 电平下配置 I/O 引脚,3V VCCB 会在 3V 电平下配置 I/O 引脚。A 端口应接口 3V 主系统,B 端口接口卡槽。此器件将在 OE 为高电平时允许 B 端口上的 VCCB 电源源引脚和 I/O 引脚浮动。要与 PCMCIA 插槽进行双向数据缓冲,以允许在正常运行期间插拔 PCMCIA 卡,必需此功能。发射/接收 (T/R) 输入决定了数据流向。传输(有效高电平)让数据能够从 A 端口传输到 B 端口。接收(有效低电平)让数据能够从 B 端口传输到 A 端口。

  • Bidirectional Interface Between 3V and 3V/5V Buses
  • Control Inputs Compatible with TTL Level
  • Outputs Source/Sink Up to 24mA
  • Guaranteed Simultaneous Switching Noise Level and Dynamic Threshold Performance
  • Available in SOIC and TSSOP Packages
  • Flexible VCCB Operating Range
  • Allows B Port and VCCB to Float Simultaneously When OE Is High
  • Functionally Compatible with the 74 Series 245 PIN Pins OE T/R A0-A7 B0-B7
  • Pb-Free Packages are Available*

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MC74LVXC3245DTG

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CAD Model

Pb

A

H

P

TSSOP-24

1

260

TUBE

62

N

8

3-State

2.3

3.6

9

24

Price N/A

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MC74LVXC3245DTRG

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CAD Model

Pb

A

H

P

TSSOP-24

1

260

REEL

2500

Y

8

3-State

2.3

3.6

9

24

$0.5608

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MC74LVXC3245DWRG

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CAD Model

Pb

A

H

P

SOIC−24 WB

3

260

REEL

1000

N

8

3-State

2.3

3.6

9

24

Price N/A

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