NXP Semiconductors 74LVC273D,118

Overview

74LVC273D,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with asynchronous master reset (MR), designed for synchronous data latching in digital control and interface logic. It operates from 1.2 V to 3.6 V, supports 5.5 V-tolerant inputs, delivers 24 mA output drive at 3.0 V, and functions across –40 °C to +125 °C - enabling use in industrial I/O expansion and mixed-voltage bus interfacing.

For engineers reviewing the 74LVC273D,118 datasheet, 74LVC273D,118 pinout, 74LVC273D,118 application, or 74LVC273D,118 equivalent, key selection criteria include its 8-bit parallel latch behavior, MR-driven synchronous clear, Schmitt-trigger input tolerance, 1.5 ns minimum clock pulse width at 3.0–3.6 V, and SO20 package compatibility with legacy 74-series footprint layouts.

Technical Context

This device implements eight independent edge-triggered D flip-flops sharing a common clock (CP) and active-low master reset (MR). Each Qn output captures the corresponding Dn input state on the LOW-to-HIGH transition of CP, provided setup (1.0 ns min at VCC ≥ 3.0 V) and hold (1.0 ns min) timing requirements are met.

MR overrides clock and data: a LOW on MR forces all Qn outputs LOW regardless of CP or Dn states. Inputs feature Schmitt-trigger action, enabling robust operation with slow-rising signals, and tolerate up to 5.5 V - allowing direct interfacing between 3.3 V logic and 5 V systems without level shifters.

Key Specifications

Pinout & Package

74LVC273D,118 is supplied in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width. Pin 1 is marked by a notch or dot; pin numbering follows standard counter-clockwise sequence from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC273PWR and 74LVC273PW,118, the 74LVC273D,118 offers superior mechanical robustness in vibration-prone environments due to SO20's gull-wing leads, while maintaining identical timing, voltage, and logic behavior - making it optimal for industrial field equipment where long-term solder joint reliability outweighs footprint savings.

Availability

74LVC273D,118 is available at Aetrix Electronics and suitable for industrial PLC modules, microcontroller peripheral expansion, legacy bus adapters, and real-time control register banks requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for 74LVC273D,118 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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC273D,118 belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-noise-immunity digital interfacing in mixed-voltage systems - emphasizing robustness, wide operating margins, and drop-in compatibility with legacy 74-series designs.

FAQ

What is the maximum clock frequency supported by the 74LVC273D,118?

The 74LVC273D,118 supports a maximum clock frequency of 150 MHz at VCC = 3.0–3.6 V and ambient temperatures up to +85 °C, and 150 MHz at VCC = 2.7 V over the full –40 °C to +125 °C range. This is derived from the 8.2 ns maximum propagation delay (tpd) and 4.0 ns minimum clock pulse width (tW) specified in Table 7 of the datasheet.

Can the 74LVC273D,118 safely interface with 5 V logic inputs?

Yes - the 74LVC273D,118 features overvoltage-tolerant inputs rated to 5.5 V, allowing direct connection to 5 V TTL or CMOS outputs without external level shifters or pull-up resistors. Input thresholds remain compatible with 3.3 V logic levels, and Schmitt-trigger action ensures noise margin against slow-rising signals.

How does the master reset (MR) function interact with the clock input?

The MR input is asynchronous and dominant: when MR is LOW, all eight Qn outputs are forced LOW immediately, regardless of CP state or timing. MR has no dependency on clock edges; its effect is immediate and overrides any ongoing clock-triggered data capture, providing guaranteed system initialization or fault recovery.

Is the 74LVC273D,118 suitable for automotive applications?

No - the 74LVC273D,118 is not automotive-qualified. While it operates from –40 °C to +125 °C, it lacks AEC-Q100 qualification, automotive-grade screening, and failure rate documentation required for safety-critical vehicle systems. It is intended for industrial, computing, and consumer applications meeting JEDEC standards.