首页 > TI 德州仪器 > 逻辑 > MSI 功能

SN74HC251 具有三态输出的数据选择器/多路复用器

These data selectors/multiplexers contain full binary decoding to select 1-of-8 data sources and feature strobe-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 (in the high-impedance state), the low impedance of the single 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 OE\ is high

	SN74HC251
Rating	Catalog
Technology Family	HC

SN74HC251 特性

• 3-State Version of ’HC151
• Wide Operating Voltage Range of 2 V to 6 V
• High-Current 3-State Outputs Interface Directly With System Bus or Can Drive Up To 15 LSTTL Loads
• Low Power Consumption, 80-µA Max ICC
• Typical tpd = 9 ns
• ±6-mA Output Drive at 5 V
• Low Input Current of 1 µA Max
• Perform Parallel-to-Serial Conversion
• Complementary Outputs Provide True and Inverted Data

SN74HC251 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
SN74HC251D	ACTIVE	0 to 70	0.95 | 1ku	SOIC (D) | 16	40 | TUBE
SN74HC251DE4	ACTIVE	0 to 70	0.95 | 1ku	SOIC (D) | 16	40 | TUBE
SN74HC251DG4	ACTIVE	0 to 70	0.95 | 1ku	SOIC (D) | 16	40 | TUBE
SN74HC251DR	ACTIVE	0 to 70	0.80 | 1ku	SOIC (D) | 16	2500 | LARGE T&R
SN74HC251DRE4	ACTIVE	0 to 70	0.80 | 1ku	SOIC (D) | 16	2500 | LARGE T&R
SN74HC251DRG4	ACTIVE	0 to 70	0.80 | 1ku	SOIC (D) | 16	2500 | LARGE T&R
SN74HC251N	ACTIVE	0 to 70	0.90 | 1ku	PDIP (N) | 16	25 | TUBE
SN74HC251NE4	ACTIVE	0 to 70	0.90 | 1ku	PDIP (N) | 16	25 | TUBE

SN74HC251 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
SN74HC251D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74HC251D	SN74HC251D
SN74HC251DE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74HC251DE4	SN74HC251DE4
SN74HC251DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74HC251DG4	SN74HC251DG4
SN74HC251DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74HC251DR	SN74HC251DR
SN74HC251DRE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74HC251DRE4	SN74HC251DRE4
SN74HC251DRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74HC251DRG4	SN74HC251DRG4
SN74HC251N	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	SN74HC251N	SN74HC251N
SN74HC251NE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	SN74HC251NE4	SN74HC251NE4

SN74HC251 应用技术支持与电子电路设计开发资源下载

1. SN74HC251 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)