Nexperia USA Inc. 74AHC273PW,112

Overview

74AHC273PW,112 from Nexperia is an octal positive-edge-triggered D-type flip-flop with asynchronous master reset (MR), operating from 2.0 V to 5.5 V supply, featuring overvoltage-tolerant inputs up to 5.5 V, propagation delay as low as 4.2 ns at 5 V/15 pF, and guaranteed operation from –40 °C to +125 °C in TSSOP20 package. It serves as a synchronous data latch and bus interface buffer in digital control logic, microcontroller I/O expansion, and address/data register stages.

For engineers reviewing the 74AHC273PW,112 datasheet, 74AHC273PW,112 pinout, 74AHC273PW,112 application, or 74AHC273PW,112 equivalent, this device is selected for high-noise-immunity edge-triggered storage in mixed-voltage 3.3 V/5 V systems, where precise setup/hold timing (tsu = 3.0 ns, th = 1.0 ns at 5 V), low static current (<80 μA), and Schmitt-trigger input action are critical.

Technical Context

This device implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR). Each stage latches Dn on the LOW-to-HIGH transition of CP, provided Dn meets setup (3.0 ns) and hold (1.0 ns) requirements; MR overrides clock and forces all Qn outputs LOW regardless of input state.

Input voltage thresholds are CMOS-compatible (VIH = 3.85 V, VIL = 1.65 V at VCC = 5.5 V), and inputs tolerate up to 5.5 V independently of VCC - enabling level translation between 3.3 V logic driving 5 V buses. Propagation delay (tpd) ranges from 4.2 ns to 17.0 ns depending on VCC and load, with maximum toggle frequency up to 120 MHz at 5 V/15 pF.

Key Specifications

Pinout & Package

TSSOP20 (SOT360-1) package: 20-terminal plastic thin shrink small outline, 4.4 mm body width, 0.65 mm lead pitch, 0.85 mm max height - optimized for high-density PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT273PW,112 and SN74LVC273PWR, the 74AHC273PW,112 uniquely balances 2.0–5.5 V operation, 5.5 V overvoltage tolerance, and –40 °C to +125 °C qualification - making it the only choice for ruggedized mixed-voltage industrial control where voltage domain bridging and extended temperature reliability are non-negotiable.

Availability

74AHC273PW,112 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics modules, and medical diagnostic equipment requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74AHC273PW,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 Dutch semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with core expertise in automotive-grade reliability and energy-efficient design.

The 74AHC series targets general-purpose high-speed CMOS logic applications demanding wide supply range, low power, and robust noise immunity - particularly in industrial, computing, and communications infrastructure.

FAQ

What is the maximum clock frequency supported by the 74AHC273PW,112?

The 74AHC273PW,112 supports up to 120 MHz maximum frequency at VCC = 5.0 V and CL = 15 pF, verified across –40 °C to +125 °C. At 50 pF load, fmax drops to 80 MHz. These values assume clean clock edges meeting specified rise/fall rates (≤20 ns/V) and proper PCB layout with local decoupling.

Can the 74AHC273PW,112 safely interface a 3.3 V microcontroller with a 5 V display driver?

Yes - its overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC, allowing 5 V display driver outputs to connect directly to Dn or CP pins while VCC = 3.3 V. Outputs swing rail-to-rail (VOH ≈ 3.3 V, VOL ≈ 0 V), so external level-shifting is needed only if the display driver requires >3.3 V logic-high recognition.

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

MR is asynchronous and dominant: a LOW on pin 1 forces all Qn outputs LOW immediately, overriding any ongoing clock activity or data input state. MR does not require synchronization with CP and takes effect within tpd(MR→Qn) = 3.7 ns (min) at 5 V/15 pF - ensuring deterministic fail-safe behavior in safety-critical latching.

Is the TSSOP20 package (SOT360-1) compatible with standard reflow profiles?

Yes - the 74AHC273PW,112 in TSSOP20 (SOT360-1) is qualified for IPC/JEDEC J-STD-020D-compliant lead-free reflow, with peak temperature up to 260 °C for 10 seconds. Its thermal resistance (θJA = 100 °C/W) and 0.65 mm pitch require controlled solder paste volume and stencil aperture design to prevent bridging during mass production.