SN74BCT29854DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74BCT29854DW is an 8-bit to 9-bit parity transceiver manufactured by Texas Instruments in a 24-pin SOIC (DW) package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports data transfer between A and B buses with integrated parity generation and checking. The device features flow-through pinout, TTL-compatible inputs/outputs, and open-collector error flag outputs. Propagation delays are typically 7 ns for data paths and up to 13 ns for parity generation at 5 V.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates 8-bit bus transceiver functionality with automatic odd parity generation during A-to-B transmission
• Provides hardware-based parity error detection with open-collector ERR output for B-to-A reception
• Includes latchable error-flag storage controlled by LE and CLR inputs for system diagnostics

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous communication interfaces requiring data integrity verification
• Bus systems utilizing parity checking for error detection
• Digital logic circuits needing isolated bidirectional data transfer with diagnostic capabilities

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the latest Package Option Addendum to confirm material type, lead finish, and moisture sensitivity level. Ensure the selected variant matches the required operating temperature range of 0°C to 70°C. Confirm RoHS compliance status directly from the manufacturer's documentation prior to procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing asynchronous bus architectures that require built-in parity error detection without external logic. The flow-through pinout simplifies PCB layout compared to standard transceivers. Consider the open-collector nature of the ERR output when designing pull-up resistor networks for the error flag interface.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74BCT family, utilizing BiCMOS technology to combine high-speed performance with low standby power consumption. It is functionally equivalent to the AMD Am29854, facilitating direct replacement in legacy designs. The DW package offers a compact surface-mount solution suitable for dense electronic assemblies.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The datasheet explicitly states functional equivalence to the AMD Am29854. Verify pin compatibility and electrical characteristics before substitution.