20 ns access, 64K x 16 — fits a 16-bit bus without byte-lane muxing
The 71V016SA20PH is a 1 Mbit asynchronous SRAM organised as 64K words by 16 bits. The 20 ns access time sets the read-cycle floor for the bus interface — a 16-bit microcontroller or DSP running at 40 MHz with a 25 ns memory cycle can insert one wait state and still meet timing with margin. The parallel interface eliminates the need for a serial-peripheral controller or byte-lane muxing on a 16-bit data bus — the chip-enable and output-enable pins gate the full word in one cycle. Write cycle time matches the read access at 20 ns, meaning the bus can toggle between read and write at the same rate without a penalty cycle. The asynchronous nature means no clock tree or refresh controller — the SRAM holds data as long as power is applied, with no periodic refresh overhead.
44-TSOP II surface-mount — common footprint for 16-bit async SRAM
Housed in a 44-lead TSOP II (10.16 mm body width), the package footprint is shared across multiple vendors' 64K x 16 asynchronous SRAMs. The surface-mount format suits automated assembly; the 0.8 mm lead pitch is layout-friendly on two-layer boards with a ground plane.
Active lifecycle, RoHS non-compliant — legacy lead-bearing finish
RoHS compliance status is listed as non-compliant, indicating a lead-bearing finish (likely tin-lead solder on the leads). This matters for EU RoHS-required assemblies unless an exemption (e.g., for high-reliability or legacy equipment) applies. Confirm the BOM's solder-paste compatibility before committing the line.