SN74LS169B 同步 4 位加/减二进制计数器

These synchronous presettable counters feature an internal carry look-ahead for cascading in high speed counting applications. The 'LS169B and 'S169 are 4-bit binary counters. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the count-enable inputs and internal gating. This mode of operation helps eliminate the output counting spikes that are normally associated with asynchronous (ripple-clock) counters. A buffered clock input triggers the four master-slave flip-flops on the rising (positive-going) edge of the clock waveform.

These counters are fully programmable; that is the outputs may each be preset to either level

	SN74LS169B
Rating	Catalog
Technology Family	LS

SN74LS169B 特性

• Programmable Look-Ahead Up/Down Binary Counters
• Fully Synchronous Operation for Counting and Programming
• Internal Look-Ahead for Fast Counting
• Carry Output for n-Bit Cascading
• Fully Independent Clock Circuit

SN74LS169B 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
SN74LS169BD	ACTIVE	0 to 70	0.40 | 1ku	SOIC (D) | 16	40 | TUBE
SN74LS169BDE4	ACTIVE	0 to 70	0.40 | 1ku	SOIC (D) | 16	40 | TUBE
SN74LS169BDG4	ACTIVE	0 to 70	0.40 | 1ku	SOIC (D) | 16	40 | TUBE
SN74LS169BN	ACTIVE	0 to 70	0.35 | 1ku	PDIP (N) | 16	25 | TUBE
SN74LS169BNE4	ACTIVE	0 to 70	0.35 | 1ku	PDIP (N) | 16	25 | TUBE

SN74LS169B 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
SN74LS169BD	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74LS169BD	SN74LS169BD
SN74LS169BDE4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74LS169BDE4	SN74LS169BDE4
SN74LS169BDG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74LS169BDG4	SN74LS169BDG4
SN74LS169BN	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	SN74LS169BN	SN74LS169BN
SN74LS169BNE4	Pb-Free (RoHS)	CU NIPDAU	N/A for Pkg Type	SN74LS169BNE4	SN74LS169BNE4

SN74LS169B 应用技术支持与电子电路设计开发资源下载

1. SN74LS169B 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)