FT93C46A-ISR-B

Overview

The FT93C46A-ISR-B is a 1Kbit (128 x 8 or 64 x 16) non-volatile EEPROM manufactured by Fremont Micro Devices Ltd. It features a 3-wire serial interface with a maximum clock frequency of 2 MHz. The device operates within a supply voltage range of 1.8V to 5.5V and supports write cycle times of 10ms. It is housed in an 8-SOP surface-mount package and functions across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports 3-wire serial communication protocol for efficient data transfer
• Provides non-volatile storage with 1Kbit capacity organized as 128x8 or 64x16 bits
• Operates on a wide supply voltage range from 1.8V to 5.5V

Applications

• Embedded systems requiring small-scale non-volatile data storage
• Industrial control units operating in extended temperature environments
• Consumer electronics utilizing low-power serial memory interfaces

Procurement Notes

Verify the specific suffix 'ISR-B' against official datasheets to confirm the 8-SOP package type and 2 MHz speed rating. Ensure compatibility with existing 3-wire serial controllers. Confirm RoHS3 compliance status if required by assembly specifications. Cross-reference manufacturer part numbers to avoid confusion with similar variants like ITR or UDR series.

Selection Notes

Select this component when a 1Kbit EEPROM is needed with a 3-wire interface and 8-SOP packaging. It is suitable for designs requiring operation down to 1.8V. Compare against standard 93C46A equivalents if pinout compatibility is critical. Verify that the 2 MHz clock speed meets system timing requirements.

Part Context

This part belongs to the 93C46A family of serial EEPROMs produced by Fremont Micro Devices Ltd. It serves as a drop-in replacement for legacy Microchip 93C46A devices in many applications. The series is designed for cost-sensitive embedded memory solutions requiring reliable non-volatile storage.

Replacement Considerations

Direct substitutes include FT93C46A-ITR-B and FT93C46A-UTR-B from Fremont Micro Devices Ltd. Other compatible options may include AT93C46D series from Microchip Technology, provided pinouts and electrical characteristics are verified.