SN54SC8T165MPWTSEP

Shift Registers Overview

The SN54SC8T165MPWTSEP is a radiation-tolerant, parallel-load 8-bit shift register from Texas Instruments. It supports a wide operating voltage range of 1.2V to 5.5V and features integrated single-supply voltage translation capabilities for both up-translation (e.g., 1.2V to 3.3V) and down-translation (e.g., 5.0V to 1.8V). The device offers Total Ionizing Dose (TID) characterization up to 50krad(Si) with performance assurance up to 30krad(Si), and Single Event Latch-Up (SEL) immunity up to 50MeV-cm2/mg at 125°C. It operates within a temperature range of -55°C to 125°C and is housed in a 16-pin TSSOP package.

Shift Registers Feature Summary

• Radiation tolerance with TID characterization up to 50krad(Si) and SEL immunity up to 50MeV-cm2/mg
• Integrated voltage level translation supporting up-translation from low-voltage CMOS inputs and down-translation from 5.5V tolerant inputs
• Space-enhanced plastic construction with Au bondwire and NiPdAu lead finish meeting NASA ASTM E595 outgassing specifications

Shift Registers Applications

• Translation between communication modules and system controllers
• Enabling or disabling digital signals in space-constrained designs
• Controlling indicator LEDs in harsh environments

Shift Registers Procurement Notes

Verify the VID V62/25625-01XE designation to confirm radiation lot acceptance testing compliance. Ensure the ordering suffix matches the required package and material specifications for defense and aerospace applications. Confirm that the selected component meets the specific TID and SEE requirements of the target mission profile before integration.

Shift Registers Selection Notes

Select this component when designing systems requiring robust signal shifting under high-radiation conditions. The integrated voltage translation eliminates external level-shifting components, simplifying board layout. Verify that the input signal transition rates comply with the recommended operating conditions to prevent excessive power consumption or oscillations during operation.

Shift Registers Part Context

This part belongs to the SN54SC8T165-SEP family, which is specifically engineered for space and defense applications. The SEP suffix indicates a controlled baseline fabrication process designed to ensure extended product life cycles and full traceability. The device utilizes standard pinouts to facilitate drop-in replacements in existing designs while providing enhanced reliability metrics.

Shift Registers Replacement Considerations

Direct substitutes include other SN54SC8T165-SEP variants with different ordering suffixes for package or material variations. Verify that any replacement maintains the same radiation qualification levels and voltage translation characteristics to ensure functional compatibility.