CD74HC237PW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

CD74HC237PW属于集成电路（IC）的信号开关多路复用器解码器。由德州仪器制造生产的CD74HC237PW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。

特性 Features

• Select One of Eight Data Outputs

- Active Low for CD74HC137 and CD74HCT137

- Active High for ’HC237 and CD74HCT237

• l/O Port or Memory Selector

• Two Enable Inputs to Simplify Cascading

• Typical Propagation Delay of 13ns at VCC = 5V,

15pF, TA = 25oC (CD74HC237)

• Fanout (Over Temperature Range)

- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads

- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

• Wide Operating Temperature Range . . . -55oC to 125oC

• Balanced Propagation Delay and Transition Times

• Significant Power Reduction Compared to LSTTL

Logic ICs

• HC Types

- 2V to 6V Operation

- High Noise Immunity: NIL = 30%, NIH = 30%, of VCC

at VCC = 5V

• HCT Types

- 4.5V to 5.5V Operation

- Direct LSTTL Input Logic Compatibility,

VIL= 0.8V (Max), VIH = 2V (Min)

- CMOS Input Compatibility, Il ≤ 1μA at VOL, VOH