- 制造厂商：TI
- 产品类别：逻辑和电压转换
- 技术类目：专用逻辑 IC - 数字多路信号分离器和解码器
- 功能描述：汽车类 3 线至 8 线解码器/多路解复用器
- 点击这里打开及下载SN74HC138-Q1的技术文档资料
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The SN74HC138 is designed to be used in 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 this 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 decoders is negligible.
The conditions at the binary-select inputs at the three enable inputs select one of eight output lines. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented without external inverters, and a 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications.
- Qualified for Automotive Applications
- ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
- Targeted Specifically for High-Speed Memory Decoders and Data-Transmission Systems
- 2-V to 6-V VCC Operation
- Outputs Can Drive Up To 10 LSTTL Loads
- Low Power Consumption, 80-μA Max ICC
- Typical tpd = 15 ns
- ±4-mA Output Drive at 5 V
- Low Input Current of 1 μA Max
- Incorporate Three Enable Inputs to Simplify Cascading and/or Data Reception
- Technology Family
- HC
- Number of channels (#)
- 1
- Operating temperature range (C)
- -40 to 125
- Rating
- Automotive
- ICC (Max) (uA)
- 80
SN74HC138-Q1的完整型号有：SN74HC138QDRG4Q1、SN74HC138QPWRG4Q1、SN74HC138QPWRQ1，以下是这些产品的关键参数及官网采购报价：
SN74HC138QDRG4Q1，工作温度：-40 to 125，封装：SOIC (D)-16，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74HC138QDRG4Q1的批量USD价格：.174（1000+）
SN74HC138QPWRG4Q1，工作温度：-40 to 125，封装：TSSOP (PW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN74HC138QPWRG4Q1的批量USD价格：.174（1000+）
SN74HC138QPWRQ1，工作温度：-40 to 125，封装：TSSOP (PW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网SN74HC138QPWRQ1的批量USD价格：.155（1000+）
14-24-LOGIC-EVM — 支持 14 到 24 引脚 PW、DB、D、DW、NS、DYY 和 DGV 封装的通用逻辑 EVM
该 EVM 设计用于支持采用 14 至 24 引脚 D、DW、DB、NS、PW、DYY 或 DGV 封装的任何逻辑器件。
