Infineon Technologies CY62148ELL-45SXI

Overview

CY62148ELL-45SXI from Infineon Technologies (formerly Cypress) is a 4-Mbit (512K × 8) CMOS static RAM with 45 ns access time, 4.5–5.5 V operation, and ultra-low standby current (2.5 µA typical). It features automatic CE-controlled power-down, TTL-compatible I/O, and is designed for battery-sensitive portable systems requiring fast, reliable non-volatile data buffering.

For engineers reviewing the CY62148ELL-45SXI datasheet, CY62148ELL-45SXI pinout, CY62148ELL-45SXI application, or CY62148ELL-45SXI equivalent, key selection criteria include industrial-grade 45 ns timing, TSOP II package compatibility, MoBL® low-power architecture, and CE/OE/WE control logic for seamless microcontroller interfacing.

Technical Context

The device implements a full CMOS 512K × 8 SRAM array with integrated sense amplifiers and address decoding. Its automatic power-down mode activates when CE is HIGH, reducing ICC to ≤7 µA while maintaining data retention at ≥2.0 V VCC.

It supports three-cycle read/write protocols with strict timing dependencies: tRC = 45 ns, tAA = 45 ns, tDOE = 22 ns, and tHZOE = 18 ns. Input thresholds (VIH = 2.2 V min, VIL = 0.8 V max for TSOP II) ensure robust TTL-level interfacing without level-shifting.

Key Specifications

Pinout & Package

Package: 32-pin Thin Small Outline Package (TSOP II), 12 × 20 mm body, 0.5 mm lead pitch, JEDEC MO-143AC compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SRAM applications.

Compared with IS61LV5128AL-10TLI and AS6C4008-55TIN, CY62148ELL-45SXI uniquely delivers 45 ns speed at 5 V with sub-µA-class standby-making it optimal for battery-constrained 5 V embedded systems where both performance and longevity are critical.

Availability

CY62148ELL-45SXI is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC data loggers, automotive infotainment head units, and legacy industrial HMI panels requiring stable component supply across extended product lifecycles.

Supply support for CY62148ELL-45SXI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, connectivity, and memory solutions for industrial, automotive, and IoT markets.

CY62148ELL-45SXI belongs to Infineon's MoBL® (More Battery Life™) SRAM product line, engineered specifically for ultra-low-power, high-reliability data buffering in portable and energy-constrained embedded systems.

FAQ

Is CY62148ELL-45SXI compatible with 5 V TTL microcontrollers without level shifters?

Yes. The device features TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and output drive capability (VOH ≥ 2.4 V at –1 mA, VOL ≤ 0.4 V at 2.1 mA), enabling direct connection to 8051, 68HC11, and Z80 families without external level translation.

What happens to data during power-down mode?

Data is retained as long as VCC remains ≥2.0 V and CE is held HIGH. At 25 °C, retention current is 3 µA typical; the device maintains valid data for ≥20 years under these conditions per JEDEC JESD22-A117.

Can CY62148ELL-45SXI replace CY62148B in existing designs?

Yes-pinout, timing, and electrical characteristics are identical per Cypress documentation. The "E" suffix denotes enhanced MoBL® low-power performance, with no functional or mechanical changes affecting backward compatibility.

Does the TSOP II package require special PCB layout considerations?

Yes. Thermal resistance (θJA = 59.10 °C/W) demands localized copper pour under the package and ≥2 vias to inner ground planes. Signal traces for A0–A18 and I/O0–I/O7 must be length-matched within 5 mm to prevent skew-induced read errors at 45 ns timing.