| Part Number | SN74ACT7881-20PN | SN74ACT7881-20FN | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Category | Logic - FIFOs Memory | Logic - FIFOs Memory | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Memory Size | 18K (1K x 18) | 18K (1K x 18) | 
| Function | Synchronous | Synchronous | 
| Data Rate | 50MHz | 50MHz | 
| Access Time | 13ns | 13ns | 
| Voltage - Supply | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 
| Current - Supply (Max) | 400µA | 400µA | 
| Bus Directional | Uni-Directional | Uni-Directional | 
| Expansion Type | Depth, Width | Depth, Width | 
| Programmable Flags Support | Yes | Yes | 
| Retransmit Capability | No | No | 
| FWFT Support | No | No | 
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 80-LQFP | 68-LCC (J-Lead) | 
| Supplier Device Package | 80-LQFP (12x12) | 68-PLCC (24.23x24.23) |