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SN74ALS251 具有三态输出的双路 8 选 1 数据选择器/多路复用器

These data selectors/multiplexers contain full binary decoding to select one-of-eight data sources and feature controlled complementary 3-state outputs.

The 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (at the high-impedance state), the low impedance of the signal-enabled output drives the bus line to a high or low logic level. Both outputs are controlled by the output-enable (OE\) input. The outputs are disabled when is high.

The SN54ALS251 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS251 is characterized for operation from 0°C to 70°C

	SN74ALS251
Rating	Catalog
Technology Family	ALS

SN74ALS251 特性

• 3-State Version of the ´ALS151
• 3-State Outputs Interface Directly With System Bus
• Perform Parallel-to-Serial Conversion
• Complementary Outputs Provide True and Inverted Data
• Package Options Include Plastic Small-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs

SN74ALS251 芯片订购指南

器件	状态	温度	价格	封装 | 引脚	封装数量 | 封装载体	丝印标记
SN74ALS251D	ACTIVE	0 to 70	0.95 | 1ku	SOIC (D) | 16	40 | TUBE
SN74ALS251DE4	ACTIVE	0 to 70	0.95 | 1ku	SOIC (D) | 16	40 | TUBE
SN74ALS251DG4	ACTIVE	0 to 70	0.95 | 1ku	SOIC (D) | 16	40 | TUBE
SN74ALS251DR	ACTIVE	0 to 70	0.80 | 1ku	SOIC (D) | 16	2500 | LARGE T&R
SN74ALS251DRE4	ACTIVE	0 to 70	0.80 | 1ku	SOIC (D) | 16	2500 | LARGE T&R
SN74ALS251DRG4	ACTIVE	0 to 70	0.80 | 1ku	SOIC (D) | 16	2500 | LARGE T&R
SN74ALS251N	ACTIVE	0 to 70	0.90 | 1ku	PDIP (N) | 16	25 | TUBE
SN74ALS251NE4	ACTIVE	0 to 70	0.90 | 1ku	PDIP (N) | 16	25 | TUBE

SN74ALS251 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
SN74ALS251D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ALS251D	SN74ALS251D
SN74ALS251DE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ALS251DE4	SN74ALS251DE4
SN74ALS251DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ALS251DG4	SN74ALS251DG4
SN74ALS251DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ALS251DR	SN74ALS251DR
SN74ALS251DRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ALS251DRE4	SN74ALS251DRE4
SN74ALS251DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ALS251DRG4	SN74ALS251DRG4
SN74ALS251N	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	SN74ALS251N	SN74ALS251N
SN74ALS251NE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	SN74ALS251NE4	SN74ALS251NE4

SN74ALS251 应用技术支持与电子电路设计开发资源下载

1. SN74ALS251 数据资料 dataSheet 下载.PDF
2. TI 德州仪器MSI 功能产品选型与价格 . xls
3. Logic Guide 2009 (PDF 4263 KB)
4. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
5. Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
6. TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
7. Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
8. CMOS Power Consumption and CPD Calculation (PDF 89 KB)
9. Designing With Logic (PDF 186 KB)
10. Live Insertion (PDF 150 KB)
11. Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
12. Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
13. HiRel Unitrode Power Management Brochure (PDF 206 KB)
14. LOGIC Pocket Data Book (PDF 6001 KB)
15. HiRel Unitrode Power Management Brochure (PDF 206 KB)
16. Logic Cross-Reference (PDF 2938 KB)