STMicroelectronics 74LVQ74MTR

Overview

74LVQ74MTR from STMicroelectronics is a low-voltage CMOS dual D-type flip-flop with asynchronous preset and clear, operating from 2V to 3.6V supply. It features symmetrical output drive (±12 mA), 250 MHz max clock frequency at 3.3V, and 75Ω transmission line driving capability-designed for noise-sensitive 3.3V digital logic interfaces in telecom and industrial control systems.

For engineers reviewing the 74LVQ74MTR datasheet, 74LVQ74MTR pinout, 74LVQ74MTR application, or 74LVQ74MTR equivalent, key selection criteria include propagation delay matching (tPLH ≅ tPHL), ESD immunity (2 kV), PCI bus-level drive (24 mA), and pin/function compatibility with standard 74-series logic.

Technical Context

The device implements two independent edge-triggered D flip-flops, each with asynchronous active-low preset (PR) and clear (CLR) inputs. Clock input (CK) responds only to the LOW-to-HIGH transition, ensuring deterministic state capture synchronized to system timing edges.

All inputs and outputs incorporate protection circuits for ±2 kV HBM ESD immunity. The sub-micron C2MOS process enables low quiescent current (2 µA max) and low dynamic noise (VOLP = 0.2 V typ), critical for mixed-signal board layouts where signal integrity must be preserved across voltage domains.

Key Specifications

Pinout & Package

74LVQ74MTR is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package with tape-and-reel delivery (MTR suffix). Dimensions conform to JEDEC MS-012, with 1.27 mm pitch and 8.75 mm body width.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual D-type flip-flop applications.

Compared with SN74LVC74APWR and 74AUP2G74DC, the 74LVQ74MTR uniquely balances 250 MHz speed, 24 mA PCI-compliant drive, and 2 kV ESD robustness-making it optimal for industrial and telecom infrastructure where reliability under electrical stress is non-negotiable.

Availability

74LVQ74MTR is available at Aetrix Electronics and suitable for telecom line interface, industrial PLC input capture, and PCI bus glue logic requiring stable component supply across extended temperature and ESD-prone environments.

Supply support for 74LVQ74MTR 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, Switzerland, specializing in automotive, industrial, and power management solutions with vertical manufacturing capabilities.

The 74LVQ series targets low-voltage, high-speed logic applications in noise-critical 3.3V systems-designed specifically to replace legacy 74LS and 74HC families while maintaining pin and function compatibility.

FAQ

Is 74LVQ74MTR compatible with 5V TTL logic inputs?

Yes-its inputs are TTL-compatible, accepting VIH ≥ 2.0 V and VIL ≤ 0.8 V over the full 2V–3.6V supply range. This allows direct connection to 5V TTL outputs without level shifters, provided VCC remains within specification. Input protection diodes clamp voltages beyond VCC+0.5 V or GND–0.5 V.

What is the minimum pulse width required on CLR/PR inputs?

The minimum low pulse width for reliable asynchronous assertion of CLR or PR is 3.0 ns at VCC = 3.3V (–40°C to +85°C), per Table 7. At –55°C to +125°C, the requirement increases to 4.0 ns. Shorter pulses risk incomplete state reset or set due to internal timing margins.

Can 74LVQ74MTR operate reliably at 1.8V supply?

No-its recommended operating VCC range is 2.0 V to 3.6V. While data retention is guaranteed down to 1.2V, functional operation (including propagation delay, drive strength, and noise immunity) is not characterized below 2.0V. At 1.8V, tPLH/tPHL exceeds 20 ns and output drive falls below specification.

Does 74LVQ74MTR require external decoupling capacitors?

Yes-STMicroelectronics specifies a 100 nF ceramic capacitor placed within 10 mm of the VCC pin (Pin 14) and GND (Pin 7) to suppress high-frequency supply noise. Without it, VOLP increases beyond 0.2 V and timing jitter rises above 1.0 ns, degrading 250 MHz operation.