74HC9115D,112

Overview

The Nexperia 74HC9115D,112 is a nine-wide Schmitt trigger buffer featuring open-drain outputs. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range from -40 °C to +125 °C. The device utilizes SO20 (SOT163-1) packaging with 20 leads. Propagation delay ranges from 10 ns to 28 ns depending on voltage and temperature. Input capacitance is typically 3.5 pF, while power dissipation capacitance per buffer is 5 pF.

Feature Summary

• Schmitt trigger action on all data inputs transforms slowly changing signals into sharply defined jitter-free output signals.
• Open drain outputs allow flexible interfacing and level shifting capabilities.
• Inputs include clamp diodes enabling interface to voltages exceeding VCC using current limiting resistors.

Applications

• Signal buffering for noisy environments requiring high noise immunity
• Level translation between different voltage domains
• Interface circuits where slow input rise and fall times are present

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when nine buffered channels with Schmitt trigger inputs are required. The open-drain output configuration necessitates external pull-up resistors for proper HIGH-level operation. Ensure the application voltage falls within the 2.0 V to 6.0 V range and that the package footprint matches the SO20 dimensions specified in the datasheet.

Part Context

This part belongs to the Nexperia 74HC logic family, designed for CMOS low power dissipation and high noise immunity. It complies with JEDEC standards JESD8C and JESD7A. The device offers robust ESD protection, exceeding 2000 V via HBM and 1000 V via CDM, ensuring reliability in standard industrial and commercial environments.

Replacement Considerations

Direct pin-to-pin replacements must maintain the nine-channel width, Schmitt trigger inputs, and open-drain outputs. Verify that alternative manufacturers' parts meet the same SO20 package dimensions and electrical specifications for voltage range and propagation delay.

FAQ

What is the function of the open-drain outputs?

The open-drain outputs can only sink current to ground. They require an external pull-up resistor connected to a supply voltage to achieve a HIGH logic state, allowing for voltage level shifting or wired-OR configurations.

How do the Schmitt trigger inputs benefit the circuit?

The Schmitt trigger inputs provide hysteresis, which prevents output oscillation caused by noise or slow-rising input signals. This ensures clean, jitter-free output transitions even when the input signal changes gradually.