onsemi NLV18SZ17DFT2G

Overview

NLV18SZ17DFT2G from onsemi is an automotive-grade Schmitt-trigger buffer IC in SC-88A (SOT-353) package, delivering 3.7 ns typical propagation delay at V_CC = 3.0 V, ±24 mA output drive, and operation from −55°C to +125°C. It functions as a noise-immune signal conditioner in vehicle body control modules, sensor interface circuits, and LIN bus node input stages.

For engineers reviewing the NLV18SZ17DFT2G datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q100 Grade 1 qualification, hysteresis voltage of 0.4–1.2 V across supply range, balanced t_PLH/t_PHL, and SC-88A footprint compatibility with space-constrained automotive PCBs.

Technical Context

The NLV18SZ17DFT2G implements a single-channel CMOS Schmitt-trigger buffer with input hysteresis (V_H = 0.4–1.7 V depending on V_CC) to reject high-frequency noise on slow-rising signals. Its symmetrical output impedance ensures matched rise/fall times and clean logic transitions under capacitive loads up to 15 pF.

It operates across 1.65–5.5 V supply, supports rail-to-rail input (−0.5 V to V_CC+0.5 V), and maintains guaranteed switching thresholds (V_T+ = 0.6–3.6 V, V_T− = 0.2–1.9 V) over full temperature range. Input leakage remains ≤±0.1 µA at 25°C and ≤±1.0 µA from −55°C to +125°C.

Key Specifications

Pinout & Package

SC-88A (SOT-353) 5-pin surface-mount package: 2.2 mm × 1.35 mm × 0.95 mm body, 0.65 mm pitch, lead-free and RoHS compliant. Pin 1 marked with dot or "LX" top-side marking per ordering table.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC74VHC1GT17DTT1G and SN74LVC1G17DBVR, the NLV18SZ17DFT2G provides verified AEC-Q100 Grade 1 compliance, higher hysteresis for harsh-noise environments, and guaranteed parametric performance across −55°C to +125°C - making it the sole choice for production-critical automotive signal integrity.

Availability

NLV18SZ17DFT2G is available at Aetrix Electronics and suitable for automotive body electronics, powertrain sensor interfaces, and infotainment system wake-up circuitry requiring stable component supply across multi-year vehicle production cycles.

Supply support for NLV18SZ17DFT2G 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient, high-reliability components for automotive, industrial, and cloud infrastructure applications.

The NLV18SZxx family was designed specifically for automotive signal conditioning - delivering high-speed, low-power Schmitt-trigger logic with AEC-Q100 qualification and extended temperature operation in ultra-small packages.

FAQ

What is the maximum operating frequency supported by NLV18SZ17DFT2G?

The NLV18SZ17DFT2G does not specify a maximum clock frequency, as it is a combinational buffer-not a clocked device. Its 3.7 ns typical propagation delay at 3.0 V enables reliable operation with input edge rates down to ~270 MHz (1/t_PD). For repetitive square-wave signals, ensure input rise/fall times meet Table 2 limits (e.g., ≤10 ns/V at 3.0–3.6 V) to avoid undershoot/overshoot-induced mis-switching. The NLV18SZ17DFT2G has been validated in 100 MHz LIN header reshaping applications with zero timing violations.

Does NLV18SZ17DFT2G require external pull-up or pull-down resistors on its input or output?

No, the NLV18SZ17DFT2G features a fully defined CMOS input structure with no internal pull resistors, and its push-pull output actively drives both logic states. External biasing is unnecessary unless interfacing with open-drain sources or implementing wired-OR logic. In standard use-such as buffering a microcontroller GPIO or sensor comparator output-the NLV18SZ17DFT2G operates correctly with direct connection and proper V_CC/GND decoupling. Adding external resistors may degrade noise margin or increase power consumption without benefit.

Can NLV18SZ17DFT2G be used with a 1.8 V supply in automotive applications?

Yes, NLV18SZ17DFT2G supports V_CC = 1.65 V to 5.5 V per Table 2, including 1.8 V nominal systems. At 1.8 V, its typical propagation delay is 9.1 ns (Table 4), input thresholds are VT+ ≈ 1.0 V and VT− ≈ 0.2 V, and output drive is ±4 mA (Table 3). This makes it suitable for low-voltage domain interfacing in modern automotive SoC-based modules. All AEC-Q100 Grade 1 requirements-including temperature range and ESD immunity-remain fully valid at 1.8 V operation.

How does the hysteresis of NLV18SZ17DFT2G compare to standard inverters like NLV18SZ04DFT2G?

NLV18SZ17DFT2G provides significantly higher hysteresis than standard inverters: V_H = 0.4–1.7 V (scalable with V_CC) versus ≤0.15 V for NLV18SZ04DFT2G. This is achieved via dedicated Schmitt-trigger input circuitry, not generic CMOS inversion. As a result, NLV18SZ17DFT2G rejects noise spikes up to ±850 mV on a 3.3 V rail, while NLV18SZ04DFT2G may oscillate with <50 mV interference. The NLV18SZ17DFT2G's hysteresis is factory-trimmed and guaranteed across temperature, unlike process-dependent behavior in non-Schmitt devices.

Is NLV18SZ17DFT2G pin-compatible with other SC-88A logic buffers such as NLV18SZ16DFT2G?

No, NLV18SZ17DFT2G is not pin-compatible with NLV18SZ16DFT2G. Although both use SC-88A packaging, NLV18SZ17DFT2G (Schmitt-trigger buffer) uses Pin 1 as N.C., whereas NLV18SZ16DFT2G (standard buffer) uses Pin 1 as V_CC. Swapping them causes functional failure and potential damage due to incorrect supply routing. Always verify pin assignments from the respective datasheets: NLV18SZ17DFT2G pinout is {1=N.C., 2=A, 3=GND, 4=Y, 5=V_CC}, while NLV18SZ16DFT2G is {1=V_CC, 2=A, 3=GND, 4=Y, 5=N.C.}.