SN74LS293 通用移位/存储寄存器

These Schottky TTL eight-bit universal registers feature multiplexed inputs/outputs to achieve full eight-bit data handling in a single 20-pin package. Two function-select inputs and two output-control inputs can be used to choose the modes of operation listed in the function table.

Synchronous parallel loading is accomplished by taking both function-select lines, S0 and S1, high. This places the three-state outputs in a high-impedance state, which permits data that is applied on the input/output lines to be clocked into the register. Reading out of the register can be accomplished while the outputs are enabled in any mode. A direct overriding input is provided to clear the register whether the outputs are enabled or off

	SN74LS293
Technology Family	LS
Rating	Catalog

SN74LS293 特性

• Multiplexed Inputs/Outputs Provide Improved Bit Density
• Four Modes of Operations:
  • Hold (Store)
  • Shift Left
  • Shift Right
  • Load Data
• Operates with Outputs Enabled or at High Z
• 3-State Outputs Drive Bus Lines Directly
• Can Be Cascaded for N-Bit Word Lengths
• SN54LS323 and SN74LS323 Are Similar But Have Synchronous Clear
• Applications:
  • Stacked or Push-Down Registers Buffer Storage, and Accumulator Registers

SN74LS293 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
SN74LS293DW	ACTIVE	0 to 70	3.20 | 1ku	SOIC (DW) | 20	25 | TUBE
SN74LS293DWE4	ACTIVE	0 to 70	3.20 | 1ku	SOIC (DW) | 20	25 | TUBE
SN74LS293DWG4	ACTIVE	0 to 70	3.20 | 1ku	SOIC (DW) | 20	25 | TUBE
SN74LS293N	ACTIVE	0 to 70	2.90 | 1ku	PDIP (N) | 20	20 | TUBE
SN74LS293NE4	ACTIVE	0 to 70	2.90 | 1ku	PDIP (N) | 20	20 | TUBE

SN74LS293 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
SN74LS293DW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74LS293DW	SN74LS293DW
SN74LS293DWE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74LS293DWE4	SN74LS293DWE4
SN74LS293N	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	SN74LS293N	SN74LS293N
SN74LS293N3	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	SN74LS293NE3	SN74LS293N3
SN74LS293NE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74LS293NE4	SN74LS293NE4

SN74LS293 应用技术支持与电子电路设计开发资源下载

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