Nexperia USA Inc. 74LVC377D,118

Overview

74LVC377D,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with data enable (E) input, designed for synchronous data latching in digital logic systems. It operates across 1.2 V to 3.6 V supply, supports 5.5 V overvoltage-tolerant inputs, delivers 24 mA output drive at 3.0 V, and functions reliably from –40 °C to +125 °C - used in industrial control bus interfaces and mixed-voltage I/O bridging.

For engineers reviewing the 74LVC377D,118 datasheet, 74LVC377D,118 pinout, 74LVC377D,118 application, or 74LVC377D,118 equivalent, key selection considerations include its 1.2–3.6 V supply range, 2.0 ns minimum set-up time at 3.3 V, 9.5 ns max propagation delay, and SO20 (SOT163-1) package compatibility with legacy 74-series board layouts.

Technical Context

This device implements eight independent D-type flip-flops sharing a common clock (CP) and active-low data enable (E). When E is LOW, each Qn output captures the corresponding Dn input on the LOW-to-HIGH CP transition, provided setup/hold timing is met - enabling synchronized parallel data capture with gating control.

Its CMOS architecture ensures low static current (≤40 μA at 3.6 V), overvoltage-tolerant inputs (up to 5.5 V), and direct TTL-level interfacing. The design supports mixed 3.3 V/5 V system translation without level shifters, and guarantees output skew ≤1.5 ns across all eight outputs under 3.0–3.6 V operation.

Key Specifications

Pinout & Package

74LVC377D,118 is housed in a plastic small outline package (SO20) per SOT163-1: 20-pin, 7.5 mm body width, 1.27 mm pitch, with gull-wing leads suitable for reflow soldering 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 SN74LVC377APWR, the 74LVC377D,118 offers superior thermal dissipation in SO20 due to larger copper exposure, while 74LVC574AD,118 lacks edge-triggered control - making it incompatible for clock-synchronized data capture where metastability avoidance is critical.

Availability

74LVC377D,118 is available at Aetrix Electronics and suitable for industrial automation, programmable logic interface, and mixed-voltage signal translation requiring stable component supply across extended temperature ranges.

Supply support for 74LVC377D,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 manufacturability in high-volume applications.

The 74LVC377 belongs to Nexperia's Low-Voltage CMOS (LVC) logic family, engineered for robust operation in industrial and automotive-adjacent systems where wide supply range, overvoltage tolerance, and extended temperature capability are essential.

FAQ

What is the maximum clock frequency supported by 74LVC377D,118 at 3.3 V?

At VCC = 3.3 V and Tamb = –40 °C to +125 °C, the 74LVC377D,118 supports a maximum clock frequency of 120 MHz, as specified in Table 7 of the datasheet. This is derived from the 9.5 ns maximum propagation delay (tpd) and accounts for worst-case process, voltage, and temperature variation.

Can 74LVC377D,118 safely interface with 5 V TTL outputs?

Yes - its inputs are overvoltage tolerant up to 5.5 V, allowing direct connection to 5 V TTL outputs without level-shifting circuitry. The device operates from 1.2–3.6 V supply, and VIH/VIL thresholds scale with VCC, ensuring correct logic interpretation across the full input voltage range.

Is the data enable (E) input synchronous or asynchronous?

The E input is asynchronous relative to CP but must be stable for at least the set-up time (tsu = 2.0 ns min at 3.3 V) before the LOW-to-HIGH CP transition to guarantee predictable output behavior. Its assertion or deassertion outside this window may cause metastability or undefined output states.

Does 74LVC377D,118 require external pull-up or pull-down resistors on unused inputs?

No - all inputs have defined VIH and VIL thresholds across the operating supply range, and internal biasing ensures stable logic levels. However, for best noise immunity and EMI performance, unused inputs should be tied to VCC or GND; floating inputs are not recommended despite CMOS input structure.