MT8985AE1

Telecom Overview

The MT8985AE1 is a Time Division Multiplex (TDM) and Time Slot Interchange (TSI) switch integrated circuit manufactured by Microchip Technology. It features a 256x256 switching matrix architecture, enabling high-density telecommunications signal routing. The device operates within a supply voltage range of 4.75V to 5.25V and draws a typical supply current of 10mA. It supports an extended industrial operating temperature range from -40°C to +85°C. The component is housed in a 40-pin Plastic Dual In-line Package (PDIP), designed for through-hole mounting on printed circuit boards.

Telecom Feature Summary

• Provides a 256x256 TDM/TSI switching matrix for complex telecommunication signal routing
• Supports standard 5V logic operation with defined power consumption characteristics
• Engineered for reliable performance across wide industrial temperature variations

Telecom Applications

• Telecommunications switching systems requiring time slot interchange capabilities
• Digital bus switching interfaces in communication infrastructure
• Signal routing applications in PBX or private branch exchange equipment

Telecom Procurement Notes

Verify the specific suffix AE1 against official Microchip documentation to confirm package type and temperature grade. Confirm end-of-life status as distribution channels may list obsolete inventory. Ensure compatibility with existing 40-pin DIP footprints during replacement planning.

Telecom Selection Notes

Select this component when a dedicated hardware solution for TDM/TSI switching is required rather than software-based processing. Verify that the system design accommodates the 40-pin DIP form factor and through-hole assembly requirements. Confirm that the 5V supply rail aligns with the specified operating voltage range.

Telecom Part Context

This part belongs to the MT8985 series of digital bus switches and telecom interface ICs produced by Microchip Technology. The series includes variants such as the MT8985AL and MT8985AL1, which differ primarily in packaging and termination options while maintaining similar core switching functionalities.

Telecom Replacement Considerations

Direct substitutes include the MT8985AL and MT8985AL1. Note that these alternatives utilize different packages, such as MQFP, requiring PCB layout modifications. Verify pin-to-pin compatibility before implementation.