Nexperia USA Inc. 74HC273PW,112

Overview

74HC273PW,112 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 propagation delay as low as 13 ns at VCC = 6.0 V, and supports industrial temperature range (–40 °C to +125 °C) in TSSOP20 package. It is used in address/data register staging, bus interface synchronization, and clock-domain crossing in microcontroller peripheral interfaces.

For engineers reviewing the 74HC273PW,112 datasheet, 74HC273PW,112 pinout, 74HC273PW,112 application, or 74HC273PW,112 equivalent, key selection considerations include its CMOS-level input compatibility, 20-pin TSSOP footprint, master reset behavior independent of clock edge, and timing parameters such as 3 ns minimum setup/hold time at 4.5 V - critical for high-reliability latch design in embedded control and industrial I/O modules.

Technical Context

This device implements eight identical D-type flip-flops sharing a common clock (CP) and active-low master reset (MR). Each flip-flop captures the state of its Dn input on the LOW-to-HIGH transition of CP, provided setup and hold time requirements are met. MR overrides all clock and data activity, forcing Qn outputs LOW regardless of CP or Dn states.

Input clamping diodes enable safe interfacing to voltages exceeding VCC when current-limiting resistors are used. The device complies with JEDEC JESD7A (2.0 V–6.0 V) and JESD8C (2.7 V–3.6 V), and exhibits ESD robustness per HBM (>2000 V) and CDM (>1000 V) standards.

Key Specifications

Pinout & Package

TSSOP20 package (SOT360-1): 20-pin thin shrink small outline, 4.4 mm body width, 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 74HCT273PW,112, the 74HC273PW,112 offers higher noise margins in pure CMOS systems but requires level-shifting when driven by 5 V TTL. Versus SN74HC273PWR, it shares identical electrical behavior but differs in traceability, qualification documentation, and long-term availability roadmap per manufacturer policy.

Availability

74HC273PW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller address latching, and LED matrix row driver control requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for 74HC273PW,112 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 leading semiconductor manufacturer specializing in high-performance, energy-efficient logic, discrete, and MOSFET components, headquartered in Nijmegen, Netherlands.

The 74HC273 belongs to Nexperia's standard logic portfolio, engineered for robustness in industrial automation, automotive body electronics, and consumer appliance control systems where reliability under voltage variation and temperature stress is critical.

FAQ

What is the maximum clock frequency supported by the 74HC273PW,112?

The 74HC273PW,112 supports a maximum clock frequency of 24 MHz at VCC = 4.5 V and CL = 50 pF, based on typical propagation delay (15 ns) and setup/hold timing margins. At VCC = 6.0 V, fmax reaches 35 MHz under same load conditions. These values assume clean, monotonic clock edges meeting specified rise/fall time limits (≤20 ns).

Can the 74HC273PW,112 be operated at 3.3 V supply?

Yes - the 74HC273PW,112 is fully specified from 2.0 V to 6.0 V, including 3.3 V operation. At VCC = 3.3 V, VIH is guaranteed ≥2.1 V and VOL ≤0.26 V at 4 mA sink, ensuring interoperability with 3.3 V microcontrollers and FPGAs without level shifting.

Is the master reset (MR) pin synchronous or asynchronous?

The MR pin is asynchronous and active-LOW: asserting MR immediately forces all Qn outputs LOW within tPHL (max 45 ns at VCC = 4.5 V), regardless of CP state or timing. Release of MR does not trigger new data capture - the next valid CP edge is required to reload Dn values.

Does the TSSOP20 package (SOT360-1) require soldering the exposed pad?

No - the TSSOP20 package for 74HC273PW,112 has no exposed thermal pad. Unlike QFN variants, SOT360-1 uses standard gull-wing leads only; thermal performance relies on PCB copper area connected to pins 2 and 20 (VCC) and pin 10 (GND), with recommended 25 mm² copper pour per power pin.