74HCT251DB-Q100J

Signal Switches, Multiplexers, Decoders Overview

The Nexperia 74HCT251DB-Q100J is an 8-bit multiplexer with three-state outputs, qualified to AEC-Q100 Grade 1 for automotive use. It features eight binary inputs (I0-I7), three select inputs (S0-S2), and an active LOW output enable (OE). The device operates within a supply voltage range of 4.5 V to 5.5 V. Propagation delay from input to output is typically 22 ns at 4.5 V and 19 ns at 5 V. Input levels are TTL compatible.

Signal Switches, Multiplexers, Decoders Feature Summary

• Automotive qualification in accordance with AEC-Q100 Grade 1 standards
• TTL input switching levels for compatibility with standard logic families
• High noise immunity and low power CMOS dissipation characteristics
• ESD protection exceeding 2000 V HBM and 1000 V CDM

Signal Switches, Multiplexers, Decoders Applications

• Automotive data routing systems
• Signal selection circuits
• Multiplexing applications requiring high noise immunity

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific package variant against the datasheet ordering information. The 'DB' suffix indicates an SO16 plastic small outline package (SOT109-1). Confirm that the 'J' suffix aligns with current manufacturing lot codes or regional distribution requirements. Ensure design-in compliance with AEC-Q100 Grade 1 temperature ranges before finalizing procurement specifications.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when TTL-compatible inputs are required for an 8-channel multiplexer in automotive environments. The 74HCT series ensures interface compatibility with 5V logic systems. Verify that the SO16 package fits the PCB layout constraints. Consider the propagation delay specifications relative to system timing requirements at the target operating voltage.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the Nexperia 74HCT251-Q100 family of 8-input multiplexers. It shares functional similarities with the 74HC251-Q100 but utilizes HCT technology for TTL-level inputs. The product line is designed for robust performance in harsh automotive conditions, offering complementary outputs and high drive capability within the specified voltage range.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The 74HC251DB-Q100 serves as a CMOS-compatible alternative if TTL input thresholds are not strictly required. Other packages such as TSSOP16 (PW) offer pin-compatible physical alternatives for space-constrained designs.