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Multiplexers | MC74VHC138
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MC74VHC138 是一种先进的高速 CMOS 3-8 解码器，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。启用该器件时，三个二进制选择输入 (A0 - A2) 决定了哪个输出 (Y0 - Y7) 将转至低电平。启用输入 E3 保持在低电平，或者 E1bar 或 E2bar 保持在高电平时，解码功能将抑制，所有输出均转至高电平。E3、E1bar 和 E2bar 输入是为了简化级联联接，用作内存系统的地址解码器。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 = 5.7ns (Typ) at VCC = 5V
- Low Power Dissipation: ICC = 4mA (Max) at TA = 25°C
- High Noise Immunity: VNIH = VNIL = 28% VCC
- Power Down Protection Provided on Inputs
- Balanced Propagation Delays
- Designed for 2V to 5.5V Operating Range
- Low Noise: VOLP = 0.8 V (Max)
- Pin and Function Compatible with Other Standard Logic Families
- Latchup Performance Exceeds 300mA
- ESD Performance: HBM > 2000V; Machine Model > 200V
- Chip Complexity: 122 FETs or 30.5 Equivalent Gates
- These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.
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