Nexperia USA Inc. 74HCT273PW-Q100J

Overview

74HCT273PW-Q100 from Nexperia is an automotive-grade octal positive-edge-triggered D-type flip-flop with synchronous data capture and asynchronous master reset (active LOW). It operates across -40 °C to +125 °C, supports 4.5 V to 5.5 V supply, delivers ≤45 ns propagation delay at VCC = 4.5 V, and features TTL-compatible inputs for direct interfacing with legacy logic. It is used in automotive body control modules for latching sensor status or actuator command states.

For engineers reviewing the 74HCT273PW-Q100 datasheet, 74HCT273PW-Q100 pinout, 74HCT273PW-Q100 application, or 74HCT273PW-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 20-pin TSSOP package with side-wettable flanks, master reset timing behavior, input voltage thresholds (VIH = 2.0 V min, VIL = 0.8 V max), and guaranteed operation up to 24 MHz at 4.5 V.

Technical Context

This device implements eight independent D-type flip-flops sharing a common clock (CP) and master reset (MR) input. Each flip-flop captures the state of its Dn input on the LOW-to-HIGH transition of CP, provided setup (12 ns min) and hold (3 ns min) times are met. MR overrides clock and data, forcing all Qn outputs LOW asynchronously.

Input clamping diodes enable interface to voltages exceeding VCC when used with current-limiting resistors. The design complies with JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V), supports CMOS-level power efficiency, and achieves high noise immunity with VIH/VIL margins of ≥1.2 V at VCC = 4.5 V.

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1), 20-lead, 4.4 mm body width, with side-wettable flanks for automated optical inspection (AOI) of solder joints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT273PW-Q100, the SO20 variant trades board area for thermal margin and ease of hand-soldering, while the TI alternative offers equivalent functionality with minor supply current and qualification documentation differences-both require verification of MR-to-CP recovery time (13 ns min) in high-speed control loops.

Availability

74HCT273PW-Q100 is available at Aetrix Electronics and suitable for automotive body control units, instrument cluster displays, and engine control module I/O expansion requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HCT273PW-Q100 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 semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer applications.

This device belongs to Nexperia's automotive-qualified logic portfolio, designed specifically for robust, low-power data latching in harsh-temperature vehicle subsystems where functional safety and long-term reliability are critical.

FAQ

What is the minimum setup time required for reliable data capture on the 74HCT273PW-Q100?

The minimum setup time (tsu) is 12 ns at VCC = 4.5 V and -40 °C to +125 °C. This ensures the Dn input remains stable for at least 12 ns before the LOW-to-HIGH clock transition. Violating this spec risks metastability or incorrect latching, especially under worst-case voltage and temperature conditions.

Can the 74HCT273PW-Q100 operate with a 3.3 V supply?

No. The 74HCT273PW-Q100 is specified only for 4.5 V to 5.5 V operation. Its TTL-compatible inputs require VCC ≥ 4.5 V to meet VIH ≥ 2.0 V and ensure proper noise margins. For 3.3 V systems, use the 74HC273PW-Q100 variant instead, which supports 2.0 V to 6.0 V with CMOS-level inputs.

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

MR is asynchronous and dominant: a LOW on MR forces all Qn outputs LOW immediately, overriding any ongoing clock activity or data input state. After MR returns HIGH, the next CP rising edge captures Dn values-no minimum MR pulse width is required beyond the 10 ns minimum specified in the datasheet.

Is the TSSOP20 package of the 74HCT273PW-Q100 compatible with standard reflow profiles?

Yes. The SOT360-1 package is qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C. Its side-wettable flanks support AOI-based post-reflow solder joint inspection, and the 0.65 mm lead pitch is compatible with standard 6–8 mil stencil apertures and Type 3 solder paste.