CAT28C16AW20

Memory IC Overview

The CAT28C16AW20 is a 16 Kbit CMOS Parallel EEPROM organized as 2K x 8 bits. It operates on a single 5 V supply and features a 24-pin SOIC package with an industrial temperature range of -40°C to +85°C. The device provides a maximum read access time of 200 ns, with an OE access time of 80 ns. Electrical characteristics include a maximum active current of 35 mA (TTL) or 25 mA (CMOS) and a standby current of 100 µA. It supports 100,000 program/erase cycles and ensures data retention for 100 years.

Memory IC Feature Summary

• Self-timed write cycle with auto-clear and on-chip address and data latches
• Hardware write protection including VCC sense and power-on delay mechanism
• DATA polling capability to signal the completion of self-timed write cycles
• CMOS and TTL compatible I/O levels for flexible system integration

Memory IC Applications

• In-system programming applications requiring simple interface control
• Storage of configuration data in industrial electronic systems
• Data logging in automotive environments operating within specified temperature ranges

Memory IC Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and temperature grade. Confirm that the 200 ns speed variant matches the system timing requirements. Ensure compliance with lead-free and halogen-free specifications if mandated by the design. Validate that the 5 V supply voltage aligns with the target application's power architecture before procurement.

Memory IC Selection Notes

Select this component when a parallel interface is required for direct microcontroller connection without serial protocol overhead. Choose the 200 ns variant only if the system clock allows for slower access times compared to faster alternatives. Consider the SOIC-24 package dimensions for PCB layout constraints. Evaluate the 100,000 cycle endurance against the expected write frequency of the application to ensure long-term reliability.

Memory IC Part Context

This part belongs to the CAT28C16A family of 16 Kbit CMOS Parallel EEPROMs manufactured by onsemi. The family includes variants with different access speeds, such as 90 ns and 120 ns, and various package options including PLCC and PDIP. The W suffix specifically denotes the SOIC package format compliant with JEDEC standards.

Memory IC Replacement Considerations

Direct substitutes within the same family include CAT28C16AJI-20 and CAT28C16AWI-12, provided the access speed and package compatibility are verified.