MoBL® 4 Mbit asynchronous SRAM — what it is and where it fits
The Infineon CY62147G30-45ZSXIT is a 4 Mbit asynchronous SRAM from the MoBL® (More Battery Life™) series, organized as 256K words by 16 bits. It is a volatile, parallel-interface memory with a 45 ns access time, operating from a single 2.2 V to 3.6 V supply. The part is housed in a 44-pin TSOP II package and rated for -40°C to +85°C industrial temperature range. Typical applications include industrial control, telecom infrastructure, medical equipment, and battery-powered instrumentation where low standby power and a wide voltage tolerance are needed.
45 ns access time — bus timing margin for 16-bit systems
The 45 ns access time sets the window from address valid to data valid on a read cycle. The write cycle time is also 45 ns.
Package and footprint — 44-TSOP II
The 44-TSOP II package (0.400-inch body width, 10.16 mm) is a standard JEDEC outline shared across many 4 Mbit asynchronous SRAMs from multiple vendors. That footprint compatibility simplifies second-source qualification — a drop-in alternate from another manufacturer can be validated without a board respin. The part is supplied on Tape & Reel (TR) or Cut Tape (CT), which covers both volume production and prototype quantities.
Lifecycle and sourcing posture
The CY62147G30-45ZSXIT carries an active lifecycle status — no end-of-life notice or last-time-buy schedule is in effect. It is RoHS3 compliant. There is no LTB risk to track for ongoing production.