TPIC6595DWR

Overview

The TPIC6595DWR is a monolithic high-voltage, medium-current power 8-bit shift register designed for systems requiring relatively high load power. It features an 8-bit serial-in/parallel-out shift register and an 8-bit D-type storage register. Data transfers occur on the rising edges of the shift register clock (SRCK) and register clock (RCK). The device includes built-in voltage clamping at the output pins for inductive transient protection. It operates with a supply voltage range of 4.5 V to 5.5 V and supports a maximum operating temperature of +125 °C.

Feature Summary

• Integrated low-side open-drain DMOS transistors provide sink current capability for driving loads.
• Built-in voltage clamping protects against inductive transients generated by connected loads.
• Serial data output allows cascading multiple devices to expand system control capabilities.

Applications

• Relay driver circuits
• Solenoid control systems
• Medium current or high voltage load switching

Procurement Notes

Verify the specific package marking and date code against the manufacturer's latest datasheet to ensure authenticity. Confirm that the SOIC-20 variant matches the required PCB footprint dimensions. Check for RoHS compliance status if environmental regulations apply to the final assembly. Ensure the ordering suffix corresponds to the correct tape-and-reel quantity specified in the official documentation.

Selection Notes

Select this component when designing circuits that require direct drive for inductive loads such as relays or solenoids without external flyback diodes. The integrated clamping simplifies layout compared to discrete solutions. Consider the thermal dissipation requirements given the continuous current rating and the ambient operating temperature range up to 125 °C.

Part Context

This part belongs to the TPIC6595 series of power shift registers from Texas Instruments. It serves as a bridge between low-voltage logic controllers and higher-power actuators. The device integrates the logic control and power switching stages into a single package, reducing component count and board space compared to separate driver and logic ICs.

Replacement Considerations

The TPIC6B595DWR is a documented substitute within the same family offering similar functionality. Verify pin compatibility and electrical specifications before substitution.