Nexperia USA Inc. 74HC273PW,118

Overview

74HC273PW,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 across 2.0 V to 6.0 V supply, delivers 8-bit parallel storage, features CMOS-level inputs, and supports industrial temperature range (−40 °C to +125 °C) in TSSOP20 package - used in microcontroller I/O expansion, address/data bus registration, and clock-synchronized control logic.

For engineers reviewing the 74HC273PW,118 datasheet, 74HC273PW,118 pinout, 74HC273PW,118 application, or 74HC273PW,118 equivalent, this device is selected for precise edge-triggered state capture, low-power 8-bit register functions, TTL-compatible timing margins, and robust noise immunity in mixed-voltage logic interfaces.

Technical Context

The 74HC273PW,118 implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR). Each flip-flop captures Dn input on the LOW-to-HIGH transition of CP, provided setup (tsu = 12 ns @ VCC = 4.5 V) and hold (th = 3 ns) times are met. MR overrides clock and data, forcing all Qn outputs LOW regardless of CP state.

Its CMOS architecture enables rail-to-rail output swing (VOH ≥ 4.4 V, VOL ≤ 0.26 V @ VCC = 4.5 V, IO = ±4 mA), low static current (ICC ≤ 160 μA @ −40 °C to +125 °C), and high noise immunity (VIH ≥ 3.15 V, VIL ≤ 1.35 V @ VCC = 4.5 V). Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 4.4 mm body width, 0.65 mm pitch, 20-terminal surface-mount plastic thin shrink small outline package rated for −40 °C to +125 °C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC273PW,118, the 74HCT273PW,118 offers higher input noise margin in 5 V TTL systems but sacrifices low-voltage operation, while SN74HC273PWR provides identical functionality with alternate supply chain assurance - choice depends on voltage domain, legacy interface needs, and procurement strategy.

Availability

74HC273PW,118 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, address bus registration, and industrial control sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC273PW,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 delivering high-performance logic, analog, and discrete components with focus on efficiency, reliability, and sustainability.

The 74HC273 belongs to Nexperia's 74HC logic family - engineered for low-power, high-noise-immunity digital interfacing in industrial, consumer, and automotive-qualified applications.

FAQ

What is the minimum setup time required for reliable operation of 74HC273PW,118?

The minimum setup time (tsu) is 12 ns at VCC = 4.5 V and −40 °C to +125 °C ambient, measured from Dn input transition to the LOW-to-HIGH CP edge. This ensures correct sampling of data before clock arrival; violating tsu risks metastability or incorrect latching. At VCC = 2.0 V, tsu increases to 60 ns due to slower internal switching.

Can 74HC273PW,118 be used with a 3.3 V supply?

Yes - the 74HC273PW,118 is fully specified down to 2.0 V, making it compatible with 3.3 V systems. VOH reaches ≥3.84 V and VOL remains ≤0.33 V at IO = ±4 mA, satisfying 3.3 V LVTTL and most 3.3 V CMOS input thresholds. Ensure input signals meet VIH ≥ 2.1 V and VIL ≤ 1.35 V for reliable operation.

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

MR is asynchronous and dominant: when MR is LOW, all Qn outputs force LOW immediately, overriding any CP activity or Dn state. MR has no timing dependency on CP - it can be asserted or deasserted at any time. After MR returns HIGH, the next valid CP rising edge captures Dn inputs, restoring normal operation.

Is there a thermal pad or exposed ground on the TSSOP20 package?

No - the SOT360-1 (TSSOP20) package for 74HC273PW,118 has no thermal pad or exposed die attach pad. Thermal dissipation relies on PCB copper area connected to pins 2 and 20 (VCC) and pin 10 (GND). For continuous operation near Ptot = 500 mW, use ≥2 cm² of 1-oz copper pour tied to GND and VCC pins via multiple vias.