Nexperia USA Inc. 74LVC1G79GW,165

Overview

74LVC1G79GW,165 from Nexperia is a single positive-edge-triggered D-type flip-flop in TSSOP5 (SOT353-1) package, operating from 1.65 V to 5.5 V supply. It stores data on LOW-to-HIGH clock transitions with 0.5 ns minimum pulse width and supports mixed-voltage interfacing (3.3 V/5 V). Used in clock-synchronized data latching in industrial control logic and sensor interface timing circuits.

For engineers reviewing the 74LVC1G79GW,165 datasheet, 74LVC1G79GW,165 pinout, 74LVC1G79GW,165 application, or 74LVC1G79GW,165 equivalent, this device serves as a compact, low-power edge-triggered storage element with IOFF-enabled partial power-down capability and Schmitt-trigger inputs for noise-immune signal conditioning in space-constrained embedded systems.

Technical Context

This flip-flop implements synchronous sequential logic with strict setup (1.2 ns min at 5.5 V) and hold (0.5 ns min at 5.5 V) timing constraints relative to the rising clock edge. Its internal structure includes dual inverters forming a master–slave latch pair, with Schmitt-trigger input buffers on D and CP pins enabling robust operation with slow-rising signals.

The IOFF circuit disables outputs when VCC = 0 V, preventing backflow current during partial power-down - critical for hot-swap and multi-rail system designs. Overvoltage-tolerant inputs (up to 5.5 V) allow direct connection to 5 V logic while powered from 1.65 V–3.3 V rails, eliminating level-shifter components in mixed-supply domains.

Key Specifications

Pinout & Package

TSSOP5 (SOT353-1) plastic thin shrink small outline package, 5-lead, body width 1.25 mm, 0.65 mm pitch, 1.1 mm height - optimized for automated placement and reflow in high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G79DBVR and 74LVC1G74GW,165, the 74LVC1G79GW,165 uniquely combines IOFF-enabled partial power-down, full JEDEC ESD compliance, and guaranteed −40 °C to +125 °C operation - making it optimal for thermally demanding, safety-critical, or energy-conscious designs requiring robust signal synchronization.

Availability

74LVC1G79GW,165 is available at Aetrix Electronics and suitable for industrial PLC input conditioning, automotive sensor data synchronization, and low-power IoT node clock domain crossing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC1G79GW,165 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 discrete, logic, and MOSFET solutions with leadership in efficiency, miniaturization, and thermal performance.

The 74LVC1G79 belongs to Nexperia's LVC logic family - engineered for low-voltage, high-speed, mixed-supply interoperability in space- and power-constrained embedded systems across automotive, industrial, and consumer applications.

FAQ

What is the minimum clock pulse width required for reliable operation?

The minimum CP pulse width is 0.5 ns at VCC = 4.5 V to 5.5 V, increasing to 2.5 ns at VCC = 1.65 V to 1.95 V. This ensures proper triggering across the full supply range and is verified per JEDEC JESD8-7 and JESD36 standards. Pulse widths below these values risk metastability or missed clock edges.

Can the 74LVC1G79GW,165 interface directly between 5 V and 1.8 V logic domains?

Yes - its overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC level, and its output VOH/VOL specs are guaranteed down to 1.65 V VCC. When VCC = 1.8 V, it drives 1.6 V HIGH and 0.2 V LOW into 4 mA loads, meeting 1.8 V logic thresholds while accepting 5 V inputs without damage or level shifters.

Does this device support hot-swap or partial power-down configurations?

Yes - the integrated IOFF circuit automatically disables outputs when VCC = 0 V, limiting backflow current to ±2 μA maximum. This enables safe insertion/removal in live backplanes and supports controlled power sequencing in multi-rail systems where other supplies remain active during VCC ramp-down.

How does the Schmitt-trigger input improve noise immunity in real-world applications?

Schmitt-trigger inputs provide ~0.3 V hysteresis on D and CP pins, rejecting noise spikes ≤100 mV and tolerating rise/fall times up to 10 ns/V at 5.5 V. In practice, this eliminates false triggering from EMI-coupled transients on long PCB traces or unshielded cables - confirmed by >2000 V HBM ESD testing and industrial EMC validation.