CY62256LL-70ZXCT

Memory IC Overview

The CY62256LL-70ZXCT is a 256Kbit (32K x 8) asynchronous static RAM manufactured by Infineon Technologies. It operates within a voltage range of 4.5V to 5.5V and features a 70ns access time. The device utilizes a 28-lead Thin Small Outline Package Type I (TSOP-I) with a reverse pinout configuration. Designed for industrial applications, it supports an operating temperature range from -40°C to +85°C. Key electrical characteristics include a maximum active supply current of 50mA and a standby current of 10µA.

Memory IC Feature Summary

• Features automatic power-down when deselected to minimize standby consumption
• Provides TTL-compatible inputs and outputs for system integration
• Includes three-state drivers controlled by Chip Enable and Output Enable signals

Memory IC Applications

• Industrial control systems requiring low-power volatile memory
• Embedded storage in automotive electronic modules
• Data buffering in high-speed parallel interface circuits

Memory IC Procurement Notes

Verify the specific suffix 'CT' against official documentation as standard listings often indicate 'ZI' or 'ZXC'. Confirm lead-free status and RoHS compliance requirements. Check for end-of-life notifications or obsolescence warnings prior to procurement. Ensure the reverse TSOP-I package matches the target PCB footprint design constraints.

Memory IC Selection Notes

Select this component for designs requiring industrial temperature stability and low standby power. Compare active current limits against system power budgets. Verify that the 70ns speed meets the timing requirements of the host processor bus. Ensure the 28-pin reverse TSOP package is compatible with available assembly equipment.

Memory IC Part Context

This part belongs to the CY62256 family of CMOS static random-access memories. The 'LL' designation indicates low power variants optimized for reduced active and standby currents compared to standard versions. The 'ZX' prefix identifies the specific 28-lead TSOP-I physical package type used in surface-mount applications.

Memory IC Replacement Considerations

CY62256LL-70ZXI: Standard lead-free version in the same package.

Memory IC FAQ

What is the function of the OE pin?

The Output Enable (OE) pin controls the direction of the data lines. When LOW, the pins act as outputs; when HIGH, they enter a high-impedance state.

How does the device handle deselection?

When the Chip Enable (CE) input is HIGH, the device enters an automatic power-down mode, significantly reducing power consumption.