FT93C46A-UTR-B

Overview

The FT93C46A-UTR-B is a non-volatile EEPROM memory IC manufactured by Fremont Micro Devices Ltd. It offers a storage capacity of 1Kbit, organized as 128 x 8 or 64 x 16 bits. The device utilizes a 3-wire serial interface with a maximum clock frequency of 1 MHz. It operates within a supply voltage range of 1.8V to 5.5V and supports an operating temperature range from -40°C to 85°C (TA). The component is housed in an 8-TSSOP package measuring 0.173 inches (4.40mm) wide.

Feature Summary

• Provides non-volatile data retention for persistent storage applications
• Supports 3-wire serial communication protocol for efficient pin usage
• Compatible with low-voltage logic systems through wide supply range operation

Applications

• Embedded system configuration storage
• Calibration data retention in industrial controllers
• Device identification and parameter logging

Procurement Notes

Verify the specific suffix UTR-B confirms the 8-TSSOP surface-mount package and 1 MHz speed variant. Confirm RoHS3 compliance status if required for environmental regulations. Check manufacturer documentation for any recent product change notices affecting this specific part number revision. Ensure compatibility with existing PCB footprint designs for 8-TSSOP components.

Selection Notes

Select this component when a small-capacity, low-pin-count EEPROM is required for space-constrained designs. The 1.8V minimum supply voltage makes it suitable for battery-powered or low-voltage logic environments. Compare against the FT93C46A-UDR-B if through-hole packaging is preferred instead of surface mount. Consider the 1 MHz interface speed sufficient for non-high-throughput data logging tasks.

Part Context

This part belongs to the FT93C46A/56A/66A series from Fremont Micro Devices Ltd, which are compatible replacements for standard 93C46A/B/C devices. The series provides various memory densities and package options. The UTR-B suffix specifically denotes the TSSOP package and tape-and-reel availability, distinguishing it from DIP or other surface-mount variants within the same functional family.

Replacement Considerations

FT93C46A-ITR-T is listed as a direct substitute offering similar functionality but with a higher 2 MHz clock frequency. AT93C46D-TH-B from Microchip Technology serves as another alternative, though it may differ in package type or electrical characteristics.