26LS30FM/B

Overview

The 26LS30FM/B is a differential line driver manufactured by Rochester Electronics, belonging to the AMD 26LS3x RS422 transceiver family. It features a single driver with three-state output capability, designed for high-speed data transmission over balanced lines. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports data rates up to 10 Mbps. It utilizes a 16-pin DIP package (PDSOP) and functions across an industrial temperature range of -40 °C to +85 °C. The component ensures signal integrity through low output impedance and high noise immunity, making it suitable for robust communication interfaces.

Feature Summary

• Supports RS422 standard differential signaling for reliable long-distance data transmission
• Provides three-state output control to facilitate bus sharing in multi-drop configurations
• Engineered for high-speed operation with data rates reaching 10 Mbps
• Delivers high noise immunity and low skew for accurate signal recovery

Applications

• Industrial communication networks requiring RS422 compliance
• Multi-drop serial data buses in automated control systems
• High-noise environments demanding differential signal integrity
• Legacy system maintenance where original AMD components are required

Procurement Notes

Verify the specific suffix FM/B against the official datasheet to confirm pinout compatibility and package dimensions. Confirm that the manufacturer designation aligns with your supply chain requirements, as Rochester Electronics sustains production of legacy parts rather than introducing new designs. Ensure environmental compliance documentation matches project specifications.

Selection Notes

Select this component when replacing obsolete AMD 26LS30 drivers in existing RS422 designs. Verify that the operating temperature range meets the application's environmental constraints. Consider the three-state output feature if bus contention management is necessary. Ensure the power supply voltage remains within the specified 4.75 V to 5.25 V window for optimal performance.

Part Context

Rochester Electronics specializes in sustaining production of discontinued semiconductor products. This part belongs to the AMD 26LS3x family, originally designed for RS422 applications. The company maintains these devices through licensed manufacturing and testing processes, ensuring availability for long-life industrial and aerospace applications where original equipment manufacturers no longer produce the chips.

Replacement Considerations

Direct substitutes include other 26LS30 variants from different manufacturers that meet RS422 electrical specifications. Verify pin-to-pin compatibility before replacement. Ensure that any alternative component supports the same three-state logic levels and data rate capabilities.