Nexperia USA Inc. 74LVC2G74DC,125

Overview

74LVC2G74DC,125 from Nexperia is a single positive-edge-triggered D-type flip-flop with asynchronous set (SD) and reset (RD) inputs, complementary Q and Q̅ outputs, 1.65 V to 5.5 V supply range, -40 °C to +125 °C operation, and IOFF partial power-down support. It functions as a synchronous storage element in digital control logic, clock domain interfacing, and level translation between 3.3 V and 5 V systems.

For engineers reviewing the 74LVC2G74DC,125 datasheet, 74LVC2G74DC,125 pinout, 74LVC2G74DC,125 application, or 74LVC2G74DC,125 equivalent, this device is selected for edge-sensitive data latching in mixed-voltage industrial controllers, low-power sensor interface state machines, and robust asynchronous reset-critical timing circuits where Schmitt-trigger input tolerance and backflow prevention are required.

Technical Context

This flip-flop implements a master-slave D-latch architecture synchronized to the LOW-to-HIGH transition of CP. Its asynchronous SD and RD inputs override clocked behavior and force Q/Q̅ to H/L or L/H states independently of CP, with propagation delays as low as 1.0 ns at VCC = 4.5–5.5 V. The IOFF circuit disables outputs when VCC = 0 V, blocking destructive back-current during partial power-down sequences.

Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at VCC = 3.3 V), enabling reliable operation with slow-rising signals up to 20 ns/V slew rate (VCC = 1.65–2.7 V). Input voltage tolerance extends to 5.5 V regardless of VCC, allowing direct connection to 5 V TTL or CMOS drivers while powered from 1.8 V or 3.3 V rails.

Key Specifications

Pinout & Package

VSSOP8 package (SOT765-1): plastic very thin shrink small outline, 8 leads, 2.3 mm body width, 0.5 mm lead length, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G74DCKR and 74AUP1G74GM,115, the 74LVC2G74DC,125 uniquely provides both SD and RD in an 8-pin VSSOP package with 5.5 V input tolerance and 1.0 ns tpd - making it the only option among the three for compact, reset-critical, mixed-voltage edge-triggered storage.

Availability

74LVC2G74DC,125 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, low-power sensor hubs, and medical instrument timing sequencers requiring stable component supply across extended temperature ranges and mixed-voltage designs.

Supply support for 74LVC2G74DC,125 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 logic, discrete, and MOSFET solutions optimized for efficiency, miniaturization, and robustness in high-volume applications.

The 74LVC2G74 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for seamless voltage-level translation, low dynamic power, and industrial-grade reliability in space-constrained digital control systems.

FAQ

Does 74LVC2G74DC,125 support true 5 V TTL input compatibility?

Yes - all inputs tolerate up to 5.5 V regardless of VCC, enabling direct connection to standard 5 V TTL outputs (VOH ≈ 3.5 V, VOL ≈ 0.2 V) without level shifters. VIH is 0.7×VCC minimum, so at VCC = 3.3 V, VIH = 2.31 V - comfortably exceeded by TTL VOH. Input hysteresis further improves noise margin.

What is the maximum clock frequency supported at 1.8 V supply?

At VCC = 1.65–1.95 V, the maximum operating frequency is 80 MHz (tW = 6.2 ns minimum pulse width). This is confirmed in Table 9 for -40 °C to +85 °C conditions; derating applies above +85 °C per thermal limits in Table 6.

How does IOFF behave during power-down, and what is its leakage specification?

When VCC = 0 V, the IOFF circuit disables all outputs, placing them in high-impedance state. Output leakage is limited to ±2 μA maximum (Table 8, IOFF parameter) with VI or VO = 5.5 V - preventing back-current flow into powered downstream circuitry during partial power-down sequences.

Can SD and RD be tied together for combined set/reset functionality?

No - SD and RD are independent active-LOW asynchronous inputs. Tying them together creates a single active-LOW control line that simultaneously forces Q = H and Q = L, resulting in undefined or conflicting output states. They must be driven separately to ensure deterministic behavior per Table 4.