SN74LV138ATRGYR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

SN74LV138ATRGYR属于集成电路（IC）的信号开关多路复用器解码器。由美国德州仪器公司制造生产的SN74LV138ATRGYR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。

FEATURES

· Inputs Are TTL-Voltage Compatible

· 4.5-V to 5.5-V V CC Operation

· Max tpd of 7.6 ns at 5 V

· Typical V OLP (Output Ground Bounce)

<0.8 V at VCC = 5 V, TA = 25°C

· Typical V OHV (Output VOH Undershoot)

>2.3 V at VCC = 5 V, TA = 25°C

· Support Mixed-Mode Voltage Operation on All

Ports

· Ioff Supports Partial-Power Down Mode

Operation

· Latch-Up Performance Exceeds 250 mA Per

JESD 17

· ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

DESCRIPTION/ORDERING INFORMATION

The SN74LV138AT is a 3-line to 8-line decoder/demultiplexer, designed for high-performance memory-decoding

or data-routing applications requiring very short propagation delay times. In high-performance memory systems,

this decoder can be used to minimize the effects of system decoding. When employed with high-speed memories

utilizing a fast enable circuit, the delay times of the decoder and the enable time of the memory usually are less

than the typical access time of the memory. This means that the effective system delay introduced by the

decoder is negligible.