Product Descriptions
A FIFO memory is a storage device that allows data to be written into and read from its array at independent data rates. The SN74ABT7820 is arranged as two 512 × 18-bit FIFOs for high speed and fast access times. It processes data at rates up to 67 MHz with access times of 12 ns in a bit-parallel format.
The SN74ABT7820 consists of bus-transceiver circuits, two 512 × 18 FIFOs, and control circuitry arranged for multiplexed transmission of data directly from the data bus or from the internal FIFO memories.
The SN74ABT7820 is characterized for operation from 0°C to 70°C.
Product Features
Member of the Texas Instruments Widebus Family
Advanced BiCMOS Technology
Independent Asynchronous Inputs and Outputs
Two Separate 512 × 18 FIFOs Buffering Data in Opposite Directions
Programmable Almost-Full/Almost-Empty Flags
Empty, Full, and Half-Full Flags
Fast Access Times of 12 ns With a 50-pF Load and Simultaneous Switching Data Outputs
Supports Clock Rates up to 67 MHz
Package Options Include 80-Pin Quad Flat (PH) and 80-Pin Thin Quad Flat (PN) Packages
Product Specifications
| Attribute | Attribute value |
| ANSM-Part# | ANSM-SN74ABT7820-30PH |
| Category | Integrated Circuits (ICs) |
| Logic | |
| FIFOs Memory | |
| Manufacturer | - |
| Series | 74ABT |
| Packaging | Tray |
| Part Status | Obsolete |
| DigiKey Programmable | Not Verified |
| Memory Size | 18K (512 x 18 x 2) |
| Function | Asynchronous |
| Data Rate | 33.3MHz |
| Access Time | 17ns |
| Voltage - Supply | 4.5 V ~ 5.5 V |
| Current - Supply (Max) | 95mA |
| Bus Directional | Bi-Directional |
| Expansion Type | - |
| Programmable Flags Support | Yes |
| Retransmit Capability | No |
| FWFT Support | No |
| Operating Temperature | 0°C ~ 70°C |
| Mounting Type | Surface Mount |
| Package / Case | 80-BQFP |
| Supplier Device Package | 80-QFP (14x20) |
| Base Product Number | 74ABT7820 |
Product Photos
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