Nexperia USA Inc. 74LVC273DB,118

Overview

74LVC273DB,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 logic systems. It operates from 1.2 V to 3.6 V, supports 5.5 V-tolerant inputs, features Schmitt-trigger inputs for noise immunity, and delivers 24 mA output drive at 3.0 V - enabling use in mixed-voltage 3.3 V/5 V interface translation and industrial control I/O expansion.

For engineers reviewing the 74LVC273DB,118 datasheet, 74LVC273DB,118 pinout, 74LVC273DB,118 application, or 74LVC273DB,118 equivalent, key selection criteria include its 1.2–3.6 V supply range, 10.5 ns max propagation delay at 3.6 V, -40 °C to +125 °C operating temperature, 20-pin TSSOP package (SOT360-1), and compatibility with JEDEC JESD8-7A/5A/C standards for low-voltage logic interfacing.

Technical Context

This device implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR). Each flip-flop captures the state of its D input on the LOW-to-HIGH transition of CP, provided setup (1.0 ns min at 3.6 V) and hold (1.0 ns min) timing requirements are met. MR overrides clock and data, forcing all Q outputs LOW asynchronously.

Input tolerance up to 5.5 V enables direct connection to 5 V TTL or CMOS sources without level shifters, while Schmitt-trigger inputs accept slow-rising signals (≤10 ns/V at 3.6 V). Output drive capability supports 50 Ω transmission lines at +85 °C, and dynamic power dissipation is governed by CPD = 21.0 pF (at 3.3 V).

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1); 20 leads; body width 4.4 mm; 0.65 mm pitch; exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC273PWR, 74LVC273DB,118 offers higher temperature resilience and 25 MHz greater maximum frequency; versus 74LVCH273PW,118, it trades bus-hold functionality for lower static current and simpler input biasing.

Availability

74LVC273DB,118 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, test equipment, and motor drive interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC273DB,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-enhancing components - delivering high-performance, reliable, and scalable logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC273 belongs to Nexperia's advanced LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-noise-immunity digital interfacing in mixed-voltage systems with stringent thermal and reliability demands.

FAQ

What is the minimum recommended supply voltage for reliable operation of 74LVC273DB,118?

The device is fully specified down to 1.2 V supply voltage, with guaranteed functionality across all parameters including propagation delay, output drive, and input thresholds. At 1.2 V, VIH is 1.08 V and VOL remains ≤0.12 V at 100 μA load - making it suitable for ultra-low-power battery-backed systems where rail voltage may sag.

Can 74LVC273DB,118 safely interface with 5 V microcontrollers without external level shifters?

Yes - all inputs (D0–D7, CP, MR) are overvoltage tolerant to 5.5 V, allowing direct connection to 5 V TTL or CMOS outputs. The outputs swing rail-to-rail (0 V to VCC), so for 5 V MCU reception, a pull-up to 5 V with series resistor or external level translator is required on Q lines.

Does the 74LVC273DB,118 require external pull-up resistors on the MR pin?

No - MR is an active-LOW input with no internal pull-up; however, in systems where MR must remain deasserted (HIGH) during power-up or idle, an external 10 kΩ pull-up to VCC is strongly recommended to prevent unintended reset assertion due to floating input.

How does the Schmitt-trigger input benefit real-world circuit design?

Schmitt-trigger action provides hysteresis (typically 0.3–0.5 V) on all inputs, enabling clean edge detection on slowly rising/falling signals - such as those from RC networks, mechanical switches, or long PCB traces - without external debouncing or filtering components.