Nexperia USA Inc. 74HC9115D,118

Overview

74HC9115D,118 from Nexperia is a 9-bit Schmitt trigger buffer IC with open-drain outputs, designed for noise-immune signal conditioning in industrial and automotive-adjacent digital interfaces. It operates from 2.0 V to 6.0 V, features input clamp diodes enabling overvoltage-tolerant interfacing, and delivers jitter-free output transitions across -40 °C to +125 °C. Used in bus buffering, level translation, and noisy sensor signal cleanup.

For engineers reviewing the 74HC9115D,118 datasheet, 74HC9115D,118 pinout, 74HC9115D,118 application, or 74HC9115D,118 equivalent, key selection criteria include Schmitt trigger hysteresis (0.4–1.1 V), open-drain drive capability (±25 mA), propagation delay (10–165 ns depending on VCC and load), and SO20 package compatibility with legacy 74HC logic footprints.

Technical Context

The 74HC9115 implements nine independent Schmitt-trigger input buffers feeding open-drain NMOS outputs - each input has defined VT+ (1.75–4.20 V) and VT- (1.35–3.30 V) thresholds with 0.4–1.1 V hysteresis, enabling robust recovery from slow-rising or noisy signals. Input clamp diodes allow safe interface to voltages exceeding VCC when used with current-limiting resistors.

Each output supports wired-AND configuration and pull-up to any voltage ≤ VCC, with guaranteed VOL ≤ 0.4 V at 5.2 mA sink and VOH undefined (open-drain). Static ICC remains ≤ 160 μA at 6.0 V and full temperature range, supporting low-power system design without sacrificing noise immunity.

Key Specifications

Pinout & Package

74HC9115D,118 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width - compatible with standard SOIC-20 footprints and reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt-trigger buffer applications.

Compared with SN74LVTH162244DGGR and 74LVC1G17GW,125, the 74HC9115D,118 uniquely combines 9-channel parallel buffering, true Schmitt-trigger noise rejection, open-drain flexibility, and extended temperature support - making it optimal for industrial I/O consolidation where signal integrity and ruggedness are non-negotiable.

Availability

74HC9115D,118 is available at Aetrix Electronics and suitable for industrial sensor interfaces, bus signal conditioning, level translation hubs, and noise-prone control panels requiring stable component supply across extended temperature ranges.

Supply support for 74HC9115D,118 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET solutions with emphasis on efficiency, reliability, and sustainability.

The 74HC9115 belongs to Nexperia's 74HC logic family - engineered for robust industrial and extended-temperature applications where noise immunity, wide supply tolerance, and long-term stability are critical.

FAQ

Can 74HC9115D,118 drive an LED directly?

Yes - each open-drain output can sink up to 25 mA, sufficient to drive standard indicator LEDs with an external current-limiting resistor and pull-up to VCC or another voltage. Ensure total package power dissipation (≤500 mW at 109 °C, derated above) is not exceeded when multiple outputs are active simultaneously.

What is the minimum input rise time supported?

The device specifies "unlimited input rise and fall times" due to Schmitt-trigger action - meaning it reliably converts arbitrarily slow transitions (e.g., from thermistors or RC networks) into clean digital edges without metastability or oscillation, provided input voltage thresholds are met.

Is 74HC9115D,118 pin-compatible with older 74HC9115 variants?

Yes - the SO20 (SOT163-1) package and pinout match all 74HC9115 versions including discontinued N- and D-suffix variants. Pin assignments for A0–A8, Y0–Y8, GND, and VCC are identical per Nexperia's pinning documentation and functional diagrams.

Does it support I²C bus operation?

It can condition I²C signals as a repeater or level shifter: inputs accept standard I²C voltage levels, and open-drain outputs interface directly to SDA/SCL lines with appropriate pull-ups. However, it lacks built-in slew-rate control or bus arbitration logic - external timing and protocol handling remain the MCU's responsibility.