What this SRAM does in the system
The CY7C1019D-10VXIT: It is a volatile memory — data is lost when power drops — so it pairs with a battery or supercap for non-volatile retention in applications like RAID controller caches, telecom line cards, and industrial PLCs.
10 ns access time — timing budget reality
Access time is 10 ns per the datasheet.
This is the final purchasing window before the part becomes obsolete — Infineon will not manufacture it after the last-time-buy date passes. If you have an active design using this SRAM, you need to secure lifetime buy quantities now, or qualify a replacement. The base product number is CY7C1019, and Infineon's official successor may carry a similar part number in the same family — check the latest PCN for the exact replacement order code. For new designs, do not start with this part; pick a current-production asynchronous SRAM in the same 32-SOJ footprint and 5V supply range.
Package and footprint — 32-SOJ
The part comes in a 32-SOJ package (32-lead Small Outline J-lead, 0.400 inch body width, 10.16 mm wide). This is a surface-mount package with J-bend leads.
The 5V supply rail is common in older industrial backplanes and PLC I/O modules.