M74HCT138B1R集成电路（IC）的信号开关多路复用器解码器规格书PDF中文资料

M74HCT138B1R属于集成电路（IC）的信号开关多路复用器解码器。由意法半导体集团制造生产的M74HCT138B1R信号开关，多路复用器，解码器逻辑型信号开关、多路复用器和编码器 IC 可用于对以数字格式表示数据的电信号进行路由和选择。这些器件与设计用于模拟信号的类似产品有所不同，它们保留的信息表示为两个电状态之一，而不是两个外部界限内的无穷变化量。

DESCRIPTION

The M54/74HC138 is a high speed CMOS 3 TO 8 LINE DECODER fabricated in silicon gate C2MOS technology. It has the same high speed performance of LSTTL combinedwithtrue CMOSlowpower consumption.

■ HIGH SPEED tPD = 16 ns (TYP.) at VCC = 5 V

■ LOW POWER DISSIPATION ICC = 4 µA AT TA = 25 °C

■ OUTPUT DRIVE CAPABILITY 10 LSTTL LOADS

■ BALANCED PROPAGATION DELAYS tPLH = tPHL

■ SYMMETRICAL OUTPUT IMPEDANCE |IOH| = IOL

■ COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.) VIL = 0.8V (MAX)

■ PIN AND FUNCTION COMPATIBLE WITH 54/74LS138