SN74ACT2228 256 x 1 x 2 双独立同步 FIFO 存储器

The SN74ACT2226 and SN74ACT2228 are dual FIFOs suited for a wide range of serial-data buffering applications, including elastic stores for frequencies up to T2 telecommunication rates. Each FIFO on the chip is arranged as 64 × 1 (SN74ACT2226) or 256 × 1 (SN74ACT2228) and has control signals and status flags for independent operation. Output flags for each FIFO include input ready (1IR or 2IR), output ready (1OR or 2OR), half full (1HF or 2HF), and almost full/almost empty (1AF/AE or 2AF/AE).

Serial data is written into a FIFO on the low-to-high transition of the write-clock (1WRTCLK or 2WRTCLK) input when the write-enable (1WRTEN or 2WRTEN) input and input-ready flag (1IR or 2IR) output are both high

	SN74ACT2228
Depth	64
Width	1
Fmax(MHz)	22
Sync/Async	S
Voltage Nodes(V)	5
Vcc range(V)	4.5 to 5.5
Flags Empty	YES
Flags Full	YES
Flags Half	YES
Technology Family	ACT
Output Drive(mA)	-8/16
Rating	Catalog

SN74ACT2228 特性

• Dual Independent FIFOs Organized as:
• 64 Words by 1 Bit Each - SN74ACT2226
• 256 Words by 1 Bit Each - SN74ACT2228
• Free-Running Read and Write Clocks Can Be Asynchronous or Coincident on Each FIFO
• Input-Ready Flags Synchronized to Write Clocks
• Output-Ready Flags Synchronized to Read Clocks
• Half-Full and Almost-Full/Almost-Empty Flags
• Support Clock Frequencies up to 22 MHz
• Access Times of 20 ns
• Low-Power Advanced CMOS Technology
• Packaged in 24-Pin Small-Outline Integrated-Circuit Package

SN74ACT2228 芯片订购指南

器件	状态	温度	价格（美元）	封装 | 引脚	封装数量 | 封装载体	丝印标记
SN74ACT2228DW	ACTIVE	-40 to 85	3.19 | 1ku	SOIC (DW) | 24	25 | TUBE
SN74ACT2228DWR	ACTIVE	-40 to 85	3.19 | 1ku	SOIC (DW) | 24	2000 | LARGE T&R

SN74ACT2228 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
SN74ACT2228DW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT2228DW	SN74ACT2228DW
SN74ACT2228DWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT2228DWR	SN74ACT2228DWR

SN74ACT2228 应用技术支持与电子电路设计开发资源下载

1. SN74ACT2228 数据资料 dataSheet 下载.PDF
2. TI 德州仪器特殊逻辑产品选型与价格 . xls
3. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
4. Understanding and Interpreting Standard-Logic Data Sheets (PDF 857 KB)
5. TI IBIS File Creation, Validation, and Distribution Processes (PDF 380 KB)
6. Implications of Slow or Floating CMOS Inputs (PDF 101 KB)
7. CMOS Power Consumption and CPD Calculation (PDF 89 KB)
8. Designing With Logic (PDF 186 KB)
9. Live Insertion (PDF 150 KB)
10. Input and Output Characteristics of Digital Integrated Circuits (PDF 1708 KB)
11. Using High Speed CMOS and Advanced CMOS in Systems With Multiple Vcc (PDF 43 KB)
12. HiRel Unitrode Power Management Brochure (PDF 206 KB)
13. LOGIC Pocket Data Book (PDF 6001 KB)
14. HiRel Unitrode Power Management Brochure (PDF 206 KB)
15. Logic Cross-Reference (PDF 2938 KB)