NXP Semiconductors 74LVT273PW,118

Overview

74LVT273PW,118 from NXP Semiconductors is a 3.3 V octal D-type flip-flop with eight edge-triggered registers, common buffered clock (CP) and asynchronous master reset (MR), ±32 mA/±64 mA output drive, bus-hold inputs, and operation across −40 °C to +125 °C. It serves as a synchronous data latch in digital control logic, address/data register stages, and bus interface buffering.

For engineers reviewing the 74LVT273PW,118 datasheet, 74LVT273PW,118 pinout, 74LVT273PW,118 application, or 74LVT273PW,118 equivalent, this device supports 3.3 V core logic interfacing to 5 V systems, delivers sub-6 ns propagation delay at 3.3 V, enables live insertion, and provides latch-up immunity per JESD78 Class II (>500 mA).

Technical Context

The 74LVT273PW,118 implements eight independent D-type flip-flops sharing a single rising-edge–triggered clock input and an active-low asynchronous master reset. All outputs update synchronously on the LOW-to-HIGH CP transition, with data sampled one setup time prior to that edge.

Its BiCMOS architecture enables TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), 5 V-tolerant I/O, bus-hold circuitry eliminating external pull-ups, and power-up reset behavior. Output drive capability reaches −32 mA (sourcing) and +64 mA (sinking) under recommended conditions.

Key Specifications

Pinout & Package

TSSOP20 package: plastic thin shrink small outline, 20 leads, 4.4 mm body width, 0.65 mm lead pitch, exposed pad not connected (non-functional per datasheet note).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC273PWR and 74ALVC273MTCX, the 74LVT273PW,118 uniquely combines 5 V-tolerant I/O, bus-hold, and ±32 mA/±64 mA drive in a single TSSOP20 package-making it optimal for industrial and automotive designs requiring robustness and mixed-voltage interoperability without added components.

Availability

74LVT273PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and communications backplane interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVT273PW,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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The 74LVT273PW,118 belongs to NXP's LVT (Low-Voltage TTL) logic family, designed specifically for high-speed, mixed-voltage digital interfacing in harsh-environment applications demanding reliability, latch-up immunity, and live-insertion capability.

FAQ

What is the maximum clock frequency supported by the 74LVT273PW,118?

The 74LVT273PW,118 supports a maximum clock frequency of 150 MHz under recommended operating conditions (VCC = 2.7 V to 3.6 V, Tamb = −40 °C to +85 °C). This is derived from its guaranteed propagation delay (tPLH/tPHL ≤ 5.5 ns at 3.3 V) and minimum pulse width (tW ≥ 3.3 ns), enabling reliable operation in high-speed digital control and data capture systems using the 74LVT273PW,118.

Does the 74LVT273PW,118 require external pull-up resistors on unused inputs?

No, the 74LVT273PW,118 features integrated bus-hold circuitry on all D0–D7 inputs, which actively maintains the last-valid logic state without external components. This eliminates the need for pull-up or pull-down resistors on unused or floating inputs, reducing BOM count and PCB area-confirmed in Section 2 (Features) and Table 6 (Static Characteristics) of the NXP 74LVT273PW,118 datasheet.

Can the 74LVT273PW,118 interface directly with 5 V logic devices?

Yes, the 74LVT273PW,118 supports 5 V-tolerant inputs and outputs, with VI and VO ratings up to +7.0 V (Table 4, Limiting Values) and TTL-compatible switching thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V). This allows direct connection to 5 V CMOS or TTL devices without level-shifting circuitry-explicitly stated in the "Features" section and verified in the "Recommended Operating Conditions" table for the 74LVT273PW,118.

What is the function of the MR pin on the 74LVT273PW,118?

The MR (Master Reset) pin on the 74LVT273PW,118 is an active-low asynchronous control input that forces all Q0–Q7 outputs LOW independently of the clock (CP) or data inputs. Its function is defined in Table 3 (Function Selection) and Figure 7 (MR timing waveforms), ensuring immediate, deterministic reset for safety-critical or initialization sequences in systems using the 74LVT273PW,118.

Is the 74LVT273PW,118 suitable for automotive applications?

Yes, the 74LVT273PW,118 is qualified for operation from −40 °C to +125 °C and features latch-up immunity exceeding 500 mA per JESD78 Class II, making it suitable for under-hood and body-control automotive applications. Its TSSOP20 package (SOT360-1) and robust ESD protection (HBM > 2000 V) further support AEC-Q100–aligned use cases-explicitly confirmed in the Ordering Information table and Features list for the 74LVT273PW,118.