STMicroelectronics 74LVQ32MTR

Overview

74LVQ32MTR from STMicroelectronics is a low-voltage CMOS quad 2-input OR gate designed for 3.3 V logic systems, featuring 5.2 ns typical propagation delay at V_CC = 3.3 V, ±12 mA symmetrical output drive, and 2 V to 3.6 V operating voltage range. It delivers PCI bus-level driving (24 mA) with 75 Ω transmission line compatibility and 2 kV ESD immunity, used in low-noise industrial control backplanes and 3.3 V I/O interface logic.

For engineers reviewing the 74LVQ32MTR datasheet, 74LVQ32MTR pinout, 74LVQ32MTR application, or 74LVQ32MTR equivalent, key selection criteria include propagation delay matching, symmetrical output current capability, 75 Ω line driving compliance, and SOP-14 package compatibility with legacy 74-series footprint layouts.

Technical Context

The device implements four independent OR logic functions using sub-micron C2MOS technology with buffered outputs, enabling high noise immunity and stable switching. Its two-stage internal architecture includes input protection diodes and output buffers optimized for low dynamic noise (V_OLP = 0.3 V typ.) and balanced t_PLH/t_PHL delays.

It operates across -55°C to +125°C with guaranteed truth table functionality from 1.2 V to 3.6 V, supports 24 mA PCI-compliant sink/source, and maintains 0.5 ns typical output-to-output skew under load - critical for synchronous multi-gate timing integrity in compact logic clusters.

Key Specifications

Pinout & Package

74LVQ32MTR is housed in a 14-pin SOIC (SOP-14) package with standard 1.27 mm pitch, compliant with JEDEC MS-012 and RoHS requirements. Pin 1 is marked by a beveled corner or dot; pin 7 is GND and pin 14 is V_CC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input OR gate applications.

Compared with SN74LVC32APWR and 74AUP1G32GW,125, the 74LVQ32MTR uniquely combines PCI-compliant 24 mA drive, 75 Ω line matching, and quad-gate integration in SOP-14 - making it optimal for industrial backplanes where timing predictability and legacy footprint compatibility are mandatory.

Availability

74LVQ32MTR is available at Aetrix Electronics and suitable for industrial PLC backplanes, 3.3 V FPGA I/O interfaces, and PCI bus signal conditioning requiring stable component supply across extended temperature ranges (-55°C to +125°C).

Supply support for 74LVQ32MTR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in automotive, industrial, and power management ICs with strong emphasis on reliability and long-term product availability.

The 74LVQ series targets low-voltage, low-noise logic applications in industrial automation and embedded computing, emphasizing ESD robustness, transmission-line compatibility, and seamless migration from legacy 74-series designs.

FAQ

Is 74LVQ32MTR compatible with 5 V TTL inputs?

Yes - its input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V) accept 5 V TTL logic levels when operated at V_CC = 3.3 V, and input protection diodes clamp excess voltage. However, V_IN must not exceed V_CC + 0.5 V per absolute maximum ratings, so direct 5 V input without current limiting is not recommended.

What is the maximum output skew between gates under load?

The maximum output-to-output skew (t_OSLH/t_OSHL) is 1.0 ns across -55°C to +125°C at V_CC = 3.3 V with CL = 50 pF. This is measured between any two outputs switching in the same direction and ensures deterministic timing in parallel logic paths such as status bus encoding.

Does 74LVQ32MTR support partial power-down operation?

No - it lacks I_OFF protection or power-down mode. When V_CC = 0 V, inputs must be held at GND or V_CC (not floating) to prevent reverse current flow through input diodes. Data retention down to 1.2 V is supported only during brown-out, not full power-off.

Can 74LVQ32MTR drive a 50 Ω transmission line?

It is specified for 75 Ω line driving; while it can drive 50 Ω loads, output voltage swing degrades (e.g., VOL rises to ~0.55 V at 24 mA), increasing reflection risk. For 50 Ω systems, use a dedicated 50 Ω line driver or add series termination to match impedance and preserve signal fidelity.