SN74ACT7802 1024 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 SN74ACT7802
is a 1024-word by 18-bit FIFO for high-speed applications. It processes data in a bit-parallel format at rates up to 40 MHz and access times of 30 ns.
Data is written into the FIFO memory on a low-to-high transition on the load-clock (LDCK) input and is read out on a low-to-high transition on the unload-clock (UNCK) input. The memory is full when the number of words clocked in exceeds by 1024 the number of words clocked out. When the memory is full, LDCK has no effect on the data in the memory; when the memory is empty, UNCK has no effect.
A low level on the reset (RESET\) input resets the FIFO internal clock stack pointers and sets full (FULL\) high, almost full/almost empty (AF/AE) high, half full (HF) low, and empty (EMPTY\) low
| SN74ACT7802 | |
| Depth | 1024 |
| Width | 18 |
| Fmax(MHz) | 40 |
| 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 |
SN74ACT7802 特性
- Member of the Texas Instruments WidebusTM Family
- Low-Power Advanced CMOS Technology
- Load and Unload Clocks Can Be Asynchronous or Coincident
- 1024 Words × 18 Bits
- Programmable Almost-Full/Almost-Empty Flag
- Empty, Full, and Half-Full Flags
- Fast Access Times of 30 ns With a 50-pF Load
- Fall-Through Time Is 20 ns Typical
- Data Rates up to 40 MHz
- High-Output Drive for Direct Bus Interface
- 3-State Outputs
- Package Options Include 68-Pin (FN) and 80-Pin Thin Quad Flat (PN) Packages
SN74ACT7802 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 |
| 1M7802-60PNG4 | ACTIVE | 0 to 70 | 14.96 | 1ku | LQFP (PN) | 80 | 119 | JEDEC TRAY (10+1) | |
| SN74ACT7802-25FN | ACTIVE | 0 to 70 | 16.28 | 1ku | PLCC (FN) | 68 | 18 | TUBE | |
| SN74ACT7802-25PN | ACTIVE | 0 to 70 | 8.43 | 1ku | LQFP (PN) | 80 | 119 | JEDEC TRAY (10+1) | |
| SN74ACT7802-40FN | ACTIVE | 0 to 70 | 9.22 | 1ku | PLCC (FN) | 68 | 18 | TUBE | |
| SN74ACT7802-40PN | ACTIVE | 0 to 70 | 9.22 | 1ku | LQFP (PN) | 80 | 119 | JEDEC TRAY (10+1) | |
| SN74ACT7802-60PN | ACTIVE | 0 to 70 | 14.96 | 1ku | LQFP (PN) | 80 | 119 | JEDEC TRAY (10+1) |
SN74ACT7802 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 |
| 1M7802-60PNG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-3-260C-168 HR | 1M7802-60PNG4 | 1M7802-60PNG4 |
| SN74ACT7802-25FN | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-3-260C-168 HR | SN74ACT7802-25FN | SN74ACT7802-25FN |
| SN74ACT7802-25PN | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-3-260C-168 HR | SN74ACT7802-25PN | SN74ACT7802-25PN |
| SN74ACT7802-40FN | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-3-260C-168 HR | SN74ACT7802-40FN | SN74ACT7802-40FN |
| SN74ACT7802-40PN | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-3-260C-168 HR | SN74ACT7802-40PN | SN74ACT7802-40PN |
| SN74ACT7802-60PN | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-3-260C-168 HR | SN74ACT7802-60PN | SN74ACT7802-60PN |
SN74ACT7802 应用技术支持与电子电路设计开发资源下载
- SN74ACT7802 数据资料 dataSheet 下载.PDF
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