SN74ALS29854NT

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS29854NT is an 8-bit to 9-bit parity bus transceiver manufactured by Texas Instruments in the ALS logic series. It operates within a supply voltage range of 4.75 V to 5.25 V and supports bidirectional data transfer between A and B buses. The device features integrated parity generation and checking capabilities, utilizing open-collector outputs for error flagging. It is housed in a 24-pin Plastic Dual-In-Line (PDIP) package and is characterized for operation across a temperature range of 0°C to 70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates 8-bit to 9-bit parity generator and checker for two-way communication
• Provides open-collector output for parity-error flag indication
• Includes latch mechanism for storing or clearing the parity-error flag

Buffers, Drivers, Receivers, Transceivers Applications

• Two-way communication between data buses
• System diagnostic applications requiring parity error detection
• Bus transceiver circuits with parity monitoring requirements

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'NT' corresponds to the 24-pin PDIP plastic dual-in-line package configuration. Confirm that the procurement matches the ACTIVE status listed in the manufacturer's documentation. Ensure compatibility with standard 5V logic systems and verify lead finish specifications against current RoHS compliance requirements before finalizing orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring bidirectional data transfer alongside hardware-level parity error detection. The inclusion of a dedicated latch for the error flag allows designers to capture transient errors for subsequent system diagnostics. Consider the open-collector nature of the ERR output when designing pull-up resistor networks for the error signal line.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments SN74ALS family, which utilizes Advanced Low-Power Schottky technology. The SN74ALS29854 is functionally similar to AMD’s AM29854. It provides high-speed bus transceiver functionality combined with parity checking, making it suitable for legacy or specialized industrial control environments where parity integrity is critical for data reliability.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74ALS29854DWR is a tape-and-reel version of the same functional device in a SOIC package. For direct pin-compatible replacement in DIP form factors, verify availability of other active PDIP variants from the SN74ALS29854 product line.