onsemi 74LCX06MTCX_SF501652

Overview

74LCX06MTCX_SF501652 from onsemi is a low-voltage hex inverter/buffer with six open-drain outputs, designed for level-shifting between 3 V and 5 V systems. It operates from 1.65 V to 5.5 V, delivers 3.7 ns max propagation delay at 3.3 V, supports ±24 mA output drive, and features 5 V-tolerant inputs - enabling direct interfacing of legacy 5 V logic into modern 3 V domains in bus buffering and I²C-compatible applications.

For engineers reviewing the 74LCX06MTCX_SF501652 datasheet, pinout, applications, or equivalent options, key selection criteria include open-drain output compatibility with wired-AND bus topologies, guaranteed 5 V input tolerance across full VCC range, thermal performance under +125 °C operation, and Pb-free TSSOP-14 package compliance with JEDEC moisture sensitivity level 1.

Technical Context

The 74LCX06MTCX_SF501652 implements six independent CMOS inverters with open-drain outputs, requiring external pull-up resistors for high-level assertion. Its input structure tolerates up to 5.5 V regardless of VCC (1.65–5.5 V), enabling robust mixed-voltage signal translation without clamping diodes or level-shifters.

Each channel supports tri-state behavior during power-down mode, with high-impedance inputs and outputs when VCC = 0 V. Propagation delay is specified down to 1.65 V supply, and dynamic noise suppression circuitry reduces EMI during switching - critical for dense PCB layouts in industrial control and communications interfaces.

Key Specifications

Pinout & Package

TSSOP-14 wide-body package (Case 948G), 5.0 mm × 4.4 mm footprint, 0.65 mm pitch, 1.2 mm max height, Pb-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter with open-drain output applications.

Compared with SN74LVC06APW and 74AHC06PW, the 74LCX06MTCX_SF501652 uniquely combines 5 V input tolerance, open-drain outputs, and 1.65–5.5 V operation - making it the sole option among the three for robust, drop-in I²C extension or mixed-voltage interrupt aggregation without layout changes.

Availability

74LCX06MTCX_SF501652 is available at Aetrix Electronics and suitable for I²C bus expansion, microcontroller GPIO offloading, and industrial sensor alert aggregation requiring stable component supply across automotive, industrial automation, and embedded computing programs.

Supply support for 74LCX06MTCX_SF501652 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The 74LCX06MTCX_SF501652 belongs to the LCX low-voltage logic family, engineered for high-speed, low-power mixed-signal interfacing in space-constrained and thermally demanding environments.

FAQ

What is the maximum operating temperature for the 74LCX06MTCX_SF501652?

The 74LCX06MTCX_SF501652 is rated for continuous operation from −40 °C to +125 °C ambient temperature. This extended range is validated per JEDEC JESD22-A104 and applies across the full 1.65–5.5 V VCC range. The device's thermal resistance (θJA = 150 °C/W) and power dissipation limit (833 mW at 125 °C) ensure reliability in sealed enclosures or high-temperature industrial settings where the 74LCX06MTCX_SF501652 serves as a bus interface or fault aggregator.

Does the 74LCX06MTCX_SF501652 support I²C bus operation?

Yes, the 74LCX06MTCX_SF501652 supports I²C bus operation as a level-translating buffer. Its open-drain outputs, 5 V-tolerant inputs, and guaranteed VOL ≤ 0.4 V at 3 mA sink (per datasheet Figure 4 test conditions) meet I²C Fast Mode (400 kHz) electrical requirements. When used on SDA/SCL lines, the 74LCX06MTCX_SF501652 isolates bus capacitance and enables flexible pull-up placement - a key advantage over standard push-pull inverters.

Can unused inputs on the 74LCX06MTCX_SF501652 be left floating?

No, unused inputs on the 74LCX06MTCX_SF501652 must be tied to a defined logic level - either VCC or GND - per datasheet recommendation. Floating inputs may cause increased ICC, unpredictable output states, or oscillation due to CMOS input stage sensitivity. This requirement applies regardless of whether the corresponding output is used or left open, and is critical to maintaining the 74LCX06MTCX_SF501652's specified quiescent current (≤10 μA) and noise immunity.

What is the purpose of the "power-down high-impedance" feature in the 74LCX06MTCX_SF501652?

The power-down high-impedance feature ensures that both inputs and outputs of the 74LCX06MTCX_SF501652 enter a high-impedance state when VCC = 0 V. This prevents back-driving of upstream logic during power sequencing, hot-plug events, or brown-out conditions. Unlike standard CMOS devices that may exhibit undefined leakage paths, the 74LCX06MTCX_SF501652 guarantees safe isolation - essential when the 74LCX06MTCX_SF501652 interfaces with powered subsystems while its own supply is inactive.

Is the 74LCX06MTCX_SF501652 RoHS compliant and Pb-free?

Yes, the 74LCX06MTCX_SF501652 is explicitly marked as Pb-free, halide-free, and RoHS compliant per the onsemi datasheet revision dated February 2025. The TSSOP-14 WB package (Case 948G) carries the "G" suffix and microdot indicator for Pb-free construction, and meets JEDEC J-STD-020 moisture sensitivity level 1 - allowing floor-life unlimited storage and standard reflow profiles without baking.