FT93C46A-UDR-B

Overview

The FT93C46A-UDR-B is a non-volatile EEPROM memory IC manufactured by Fremont Micro Devices Ltd. It features a 1Kb storage capacity 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 4.5V to 5.5V and supports a write cycle time of 10ms per word or page. The component is housed in an 8-DIP package (0.300 inch / 7.62mm) designed for through-hole mounting. It functions reliably across a temperature range of -40°C to 85°C.

Feature Summary

• Provides non-volatile data retention using CMOS EEPROM technology.
• Supports serial communication via a standard 3-wire interface protocol.
• Compatible with standard 8-pin DIP through-hole PCB layouts.

Applications

• Embedded systems requiring small-scale parameter storage
• Industrial control devices needing configuration data retention
• Consumer electronics utilizing serial memory interfaces

Procurement Notes

Verify the specific suffix UDR-B confirms the 8-DIP through-hole package and 1MHz speed variant, as Fremont Micro Devices uses suffixes to denote package type and performance grades. Confirm RoHS3 compliance status if required for your manufacturing process. Check current distributor availability as stock levels fluctuate. Ensure the 4.5V to 5.5V operating voltage aligns with your system power rails before finalizing procurement.

Selection Notes

Select this component when a through-hole DIP package is mandatory for mechanical stability or prototyping ease. Choose this part over surface-mount variants if your assembly process relies on wave soldering or manual insertion. Verify that the 1MHz serial clock speed meets your system's timing requirements. Ensure the 1Kb capacity is sufficient for your application's data storage needs without excessive waste.

Part Context

This component belongs to the FT93C46A series, which are pin-compatible replacements for industry-standard 93C46A devices. Fremont Micro Devices produces these parts to offer alternative sourcing for legacy EEPROM designs. The series maintains functional equivalence with original manufacturer specifications while providing supply chain flexibility for designers.

Replacement Considerations

FT93C66A-UDR-B is listed as a similar substitute from the same manufacturer, offering higher density. Direct cross-brand replacements like Microchip AT93C46D may require verification of electrical characteristics and pinout compatibility.