4 Mbit asynchronous SRAM for industrial bus-matched memory
The Infineon CY62146DV30L-55ZSXI is a 4 Mbit asynchronous SRAM from the MoBL (More Battery Life) series, organized as 256K x 16 bits with a parallel interface. It is designed for applications requiring low standby power and a wide voltage supply range of 2.2 V to 3.6 V, making it suitable for battery-backed or single-rail systems in industrial control, telecom infrastructure, and portable instrumentation. The 55 ns access time and 55 ns write cycle time align with mid-speed bus controllers and CPLD/FPGA glue logic, while the industrial temperature range (-40°C to 85°C) qualifies it for factory-floor and outdoor deployment.
55 ns access time — what it means for bus timing
The 55 ns access time sets the window for the memory to present valid data after the address is latched. The 55 ns write cycle time is symmetric, so read-modify-write sequences do not stall.
Package and footprint: 44-TSOP II
Housed in a 44-TSOP II (0.400" body width, 10.16 mm), this surface-mount package is a common footprint for mid-density asynchronous SRAMs.
Lifecycle and compliance
The MoBL series is Infineon's low-power asynchronous SRAM family, and the CY62146DV30L-55ZSXI remains a standard catalog item through independent distribution.