The CY7C1393BV18-250BZI is a 18 Mbit synchronous DDR II SRAM organized as 1M x 18, clocked at 250 MHz. The DDR II interface means data transfers on both clock edges, giving an effective bandwidth of 500 MT/s on a 18-bit bus — this is the throughput a network switch buffer or a test-equipment waveform memory needs when the bus is the bottleneck, not the core logic. Supply range is 1.7 V to 1.9 V, so it runs on a standard 1.8 V rail with margin for ripple. The -40 to 85 °C industrial temperature grade covers outdoor base-station and factory-floor enclosures without active cooling.
The package is RoHS-compliant and shipped in tray format, so the pick-and-place feeder setup is standard for this ball count.
Lifecycle reality — obsolete, sourced to order
Infineon lists this part as Obsolete. For a BOM line that already carries this order code, the supply path is surplus and broker channels; expect no factory lead time.