The AMD AM7203A-50RC is a 2K x 9 asynchronous FIFO memory with a 50 ns access time and a 15.3 MHz data rate. It provides 18 Kbit of elastic buffering for data-flow applications where the read and write clocks are not synchronized — no external clock or PLL required, just read and write strobes. Typical uses include printer buffers, serial data queues, and rate-matching between peripherals and a host bus in commercial-temperature (0°C to 70°C) equipment such as office automation and telecom line cards.
Retransmit capability and expansion
The retransmit capability allows the FIFO to re-read data from a reset pointer without clearing the entire buffer — useful in retry protocols or data-replay loops. Depth and width expansion are supported, so the part can be cascaded for larger buffers. Note that programmable flags and FWFT (First-Word Fall-Through) are not supported; the flag set is fixed to empty/full/half-full.
Package and temperature — legacy through-hole fit
The 28-pin DIP (0.300", 7.62 mm) through-hole package suits boards with DIP sockets or wave soldering.
Lifecycle and sourcing
This part is listed as Active in its lifecycle status, meaning AMD continues to manufacture it. No end-of-life notice is in effect. The AM7203A-50RC is RoHS non-compliant (lead-bearing), so verify your assembly process if RoHS exemption is required. Sourced through independent distribution and quoted to order against an RFQ; availability and current pricing are confirmed at quote time.