Nexperia USA Inc. 74AHC273PW,118

Overview

74AHC273PW,118 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 (CL = 15 pF), and guaranteed operation from –40 °C to +125 °C. It serves as a synchronous data latch in digital control logic, bus interface buffering, and state register stages in industrial microcontroller peripherals.

For engineers reviewing the 74AHC273PW,118 datasheet, 74AHC273PW,118 pinout, 74AHC273PW,118 application, or 74AHC273PW,118 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 ICC (≤ 80 μA at 5.5 V), and Schmitt-trigger input action are critical.

Technical Context

The 74AHC273PW,118 implements eight independent D-type flip-flops sharing a common clock (CP) and active-low master reset (MR). Each flip-flop captures 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 data to force all Qn outputs LOW immediately.

Its CMOS architecture delivers balanced tPLH/tPHL propagation delays (4.2–13.6 ns depending on VCC and load), supports TTL-level compatibility only in the AHCT variant (not applicable here), and includes overvoltage-tolerant inputs enabling safe interfacing between 3.3 V logic and 5 V buses without level shifters.

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1), 20-pin, 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 74AHCT273PW,118 and SN74LV273APWR, the 74AHC273PW,118 uniquely combines 5.5 V overvoltage-tolerant inputs with sub-5 ns propagation at 5 V and lowest ICC in its class - making it optimal for mixed-voltage, low-power, high-reliability register applications.

Availability

74AHC273PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, microcontroller bus interface, and test equipment digital pattern generation requiring stable component supply across extended temperature ranges and mixed-voltage environments.

Supply support for 74AHC273PW,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 MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.

The 74AHC273PW,118 belongs to Nexperia's advanced AHC logic family, engineered for high-speed, low-power, mixed-voltage digital interfacing - specifically targeting robust data latching in noise-prone, thermally demanding embedded systems.

FAQ

Is the 74AHC273PW,118 pin-compatible with the 74AHCT273PW,118?

Yes - both devices share identical TSSOP20 (SOT360-1) pinout, footprint, and electrical connections. The sole functional difference is input threshold: 74AHC273PW uses CMOS-level inputs (VIH ≥ 3.85 V at 5.5 V), while 74AHCT273PW uses TTL-level inputs (VIH ≥ 2.0 V). Swapping requires verifying source logic family compatibility.

Can the 74AHC273PW,118 operate reliably at 3.3 V supply?

Yes - it is fully specified from 2.0 V to 5.5 V. At VCC = 3.3 V ± 0.3 V, propagation delay is 6.0–13.6 ns (CL = 15–50 pF), setup time remains 3.0 ns, and VIH/VIL thresholds scale proportionally (VIH ≈ 2.1 V min). All DC and AC parameters are guaranteed across –40 °C to +125 °C at this voltage.

What is the purpose of the duplicate VCC pin (Pin 2 and Pin 20)?

Pins 2 and 20 are internally bonded to the same VCC net. This dual-VCC configuration improves power delivery integrity in high-speed operation by reducing effective supply inductance and distributing current across two entry points - critical for maintaining stable VCC during simultaneous 8-bit output switching events.

Does the 74AHC273PW,118 require external pull-up or pull-down resistors on MR or CP?

No - MR and CP have no internal termination. However, MR must be actively driven or pulled HIGH (e.g., via 10 kΩ to VCC) to prevent unintended reset; floating MR may cause erratic output behavior. CP should be driven by a clean, low-impedance clock source - series termination (22–33 Ω) is recommended for >10 MHz edges to suppress reflections.