Multiplexers | MC74VHCT157A

四路 2 沟道多工器

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MC74VHCT157A 是一款先进的高速 CMOS 四路 2 沟道多工器，采用硅门极 CMOS 工艺制造。它实现了与同等双极肖特基 TTL 相似的高运行速度，同时保持了 CMOS 低功耗。它由四个 2 输入多工器组成，带公共选择 (S) 和启用 (Ebar) 输入。当 Ebar 保持在高电平时，数据选择将禁止，所有输出转为低电平。选择解码决定了 A 端口或 B 端口是否路由到相应的 Y 输出。VHCT 输入与 TTL 电平兼容。此器件可用作电平转换器，联接 3.3 V 至 5.0 V 电平，因为它具有全 5V CMOS 电平输出摆幅。VHCT157A 输入结构可在 0 V 至 5.5 V 之间的应用电压下提供保护，而无论电源电压如何。输出结构还会在 VCC = 0V 时提供保护。这些输入和输出结构有助于防止电源电压 - 输入/输出电压不匹配、电池备用、热插入等导致的器件损坏。该内部电路由三级组成，包括一个提供高抗扰性和稳定输出的缓冲输出。输入耐压达 7V，支持 5V 系统到 3V 系统的接口。

  • High Speed: tPD = 4.1ns (Typ) at VCC = 5V
  • Low Power Dissipation: ICC = 4mA (Max) at TA = 25°C
  • TTL-Compatible Inputs: VIL = 0.8 V; VIH = 2.0 V
  • Power Down Protection Provided on Inputs and Outputs
  • Balanced Propagation Delays
  • Designed for 2V to 5.5V Operating Range
  • Low Noise: VOLP = 0.8V (Max)
  • Pin and Function Compatible with Other Standard Logic Families
  • Latchup Performance Exceeds 300mA
  • ESD Performance: HBM > 2000V; Machine Model > 200V
  • Chip Complexity: 82 FETs or 20 Equivalent Gates
  • Pb-Free Packages are Available*

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M74VHCT157ADTR2G

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Pb

A

H

P

TSSOP-16

948F-01

1

260

REEL

2500

N

4

4.5

5.5

8.4

null

$0.2748

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