The 57401AW/883B is a 64-word by 4-bit asynchronous FIFO in a 20-lead ceramic flatpack (20-CFlatpack). It buffers data across clock domains or bus-width mismatches where the read and write sides run independently — no common clock needed. The 10 MHz data rate and 65 ns access time suit moderate-speed data acquisition, telemetry, or control-logic handshaking in systems that need a small, fast elastic store. This is a width-expansion FIFO — you cascade multiple devices to increase word width, not depth. No FWFT (First-Word Fall-Through) or programmable flags; the flag logic is basic empty/full with retransmit capability absent. The part is unidirectional: data flows one way.
57401AW/883B FIFO, 64x4, Asynchronous, 10MHz, -55°C~125°C
MPN57401AW/883B
End of Life
57401AW/883B, Asynchronous FIFO, 64 x 4, 65 ns access time, 10 MHz data rate, 4.5 V ~ 5.5 V supply, -55°C to 125°C, 20-CFlatpack, Bulk.
$79.54Ref. price · indicative, final on quote
Packaging20-CFlatpack
RoHSNot applicable
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Expansion type | Width |
| Voltage | 4.5 V ~ 5.5 V |
| Current - supply | 180mA |
| Operating temperature | -55°C ~ 125°C |
| Package | Bulk |
| Function | Asynchronous |
| Data rate | 10MHz |
| Memory size | 64 x 4 |
| FWFT support | No |
| Case | 20-CFlatpack |
| Bus directional | Uni-Directional |
| Retransmit capability | No |
| Programmable flags support | No |
Product details
Frequently asked questions
What is the difference between synchronous and asynchronous FIFO?
An asynchronous FIFO like the 57401AW/883B uses separate read and write clocks that run independently; a synchronous FIFO uses a single clock for both read and write operations.