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SN74ACT7804 512 x 18 异步 FIFO 存储器

A FIFO memory is a storage device that allows data to be written into and read from its array at independent data rates. The SN74ACT7804 is a 512-word by 18-bit FIFO for high speed and fast access times. It processes data at rates up to 50 MHz and access times of 15 ns in a bit-parallel format.

Data is written into memory on a low-to-high transition at the load-clock (LDCK) input and is read out on a low-to-high transition at the unload-clock (UNCK) input. The memory is full when the number of words clocked in exceeds the number of words clocked out by 512. When the memory is full, LDCK signals have no effect on the data residing in memory. When the memory is empty, UNCK signals have no effect.

Status of the FIFO memory is monitored by the full (FULL\), empty (EMPTY\), half-full (HF), and almost-full/almost-empty (AF/AE) flags

	SN74ACT7804
Depth	512
Width	18
Fmax(MHz)	50
Sync/Async	A
Voltage Nodes(V)	5
Vcc range(V)	4.5 to 5.5
Output Drive(mA)	-8/16
Rating	Catalog
Technology Family	ACT

SN74ACT7804 特性

• Member of the Texas Instruments WidebusTM Family
• Load Clock and Unload Clock Can Be Asynchronous or Coincident
• 512 Words by 18 Bits
• Low-Power Advanced CMOS Technology
• Full, Empty, and Half-Full Flags
• Programmable Almost-Full/Almost-Empty Flag
• Fast Access Times of 15 ns With a 50-pF Load and All Data Outputs Switching Simultaneously
• Data Rates up to 50 MHz
• 3-State Outputs
• Pin-to-Pin Compatible With SN74ACT7806 and SN74ACT7814
• Packaged in Shrink Small-Outline 300-mil Package Using 25-mil Center-to-Center Spacing

SN74ACT7804 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
1M7804-20DLG4	ACTIVE	0 to 70	9.24 | 1ku	SSOP (DL) | 56	20 | TUBE
1M7804-20DLRG4	ACTIVE	0 to 70	9.46 | 1ku	SSOP (DL) | 56	1000 | LARGE T&R
SN74ACT7804-20DL	ACTIVE	0 to 70	9.24 | 1ku	SSOP (DL) | 56	20 | TUBE
SN74ACT7804-20DLR	ACTIVE	0 to 70	9.46 | 1ku	SSOP (DL) | 56	1000 | LARGE T&R
SN74ACT7804-25DL	ACTIVE	0 to 70	5.27 | 1ku	SSOP (DL) | 56	20 | TUBE
SN74ACT7804-40DL	ACTIVE	0 to 70	8.80 | 1ku	SSOP (DL) | 56	20 | TUBE
SN74ACT7804-40DLR	ACTIVE	0 to 70	9.24 | 1ku	SSOP (DL) | 56	1000 | LARGE T&R

SN74ACT7804 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
1M7804-20DLG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	1M7804-20DLG4	1M7804-20DLG4
1M7804-20DLRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	1M7804-20DLRG4	1M7804-20DLRG4
SN74ACT7804-20DL	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT7804-20DL	SN74ACT7804-20DL
SN74ACT7804-20DLR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT7804-20DLR	SN74ACT7804-20DLR
SN74ACT7804-25DL	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT7804-25DL	SN74ACT7804-25DL
SN74ACT7804-40DL	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT7804-40DL	SN74ACT7804-40DL
SN74ACT7804-40DLR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	SN74ACT7804-40DLR	SN74ACT7804-40DLR

SN74ACT7804 应用技术支持与电子电路设计开发资源下载

1. SN74ACT7804 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)