77049012A

Overview

The SN55452BFK is a dual-peripheral driver from the SNx545xB family, manufactured by Texas Instruments. It implements NAND logic with open-collector outputs capable of driving up to 300 mA at supply voltages up to 30 V. The device operates within a military temperature range of -55°C to 125°C and features TTL-compatible diode-clamped inputs. Packaged in a 20-pin LCCC (FK) format, it ensures freedom from latch-up after conducting high currents.

Feature Summary

• Dual-channel architecture with integrated NAND logic gates
• High-voltage output capability up to 30 V
• TTL-compatible inputs with internal diode clamping

Applications

• High-speed logic buffers
• Power drivers for peripheral loads
• LED drivers
• Line drivers
• Memory drivers

Procurement Notes

Verify the specific ordering suffix FK to confirm the 20-pin LCCC package configuration. Ensure the part number matches the SN55452B variant for correct NAND logic functionality. Confirm RoHS compliance status and lead finish details against the manufacturer's latest orderable addendum before finalizing procurement specifications.

Selection Notes

Select this component when a dual-channel driver with NAND logic is required for military-grade environments. The SN55452B provides higher current drive capabilities compared to standard logic families. Consider the 20-pin LCCC package constraints if board space allows for larger footprints. Verify that the load voltage does not exceed the 30 V maximum rating.

Part Context

This device belongs to the SNx545xB series, which includes AND, NAND, OR, and NOR variants. The SN55452B specifically replaces older SN75450 family devices while maintaining functional compatibility. It is designed for systems employing TTL logic, offering improved speed and latch-up immunity over previous generations.

Replacement Considerations

SN55452BJG: Identical electrical characteristics and logic function housed in an 8-pin CDIP package instead of the 20-pin LCCC.