Nexperia USA Inc. 74AHC377PW,118

Overview

74AHC377PW,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with individual D inputs and Q outputs, a common clock (CP), and an active-low data enable (E). It operates from 2.0 V to 5.5 V, delivers propagation delays as low as 3.9 ns (VCC = 5 V, CL = 15 pF), supports −40 °C to +125 °C ambient range, and is used in addressable register banks for microcontroller peripheral interfacing and synchronous data latching.

For engineers reviewing the 74AHC377PW,118 datasheet, 74AHC377PW,118 pinout, 74AHC377PW,118 application, or 74AHC377PW,118 equivalent, key selection criteria include edge-triggered synchronization timing, data-enable-controlled parallel loading, TTL- or CMOS-level input compatibility (depending on variant), and TSSOP20 packaging for high-density PCB layouts.

Technical Context

This device implements eight independent D-type flip-flops sharing one clock and one enable signal, enabling simultaneous capture of eight-bit parallel data on the rising edge of CP when E is LOW. Its Schmitt-trigger inputs tolerate slow-rising signals and accept voltages up to 7.0 V regardless of VCC, supporting mixed-voltage system interfacing.

The functional behavior is defined by a two-input control matrix: E must be stable one setup time before CP's LOW-to-HIGH transition, and Dn sampling occurs at that edge. Output states remain unchanged when E is HIGH or CP is static, providing deterministic hold functionality without internal feedback paths.

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1), 20-pin, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT377PW,118, the AHC variant offers wider input voltage tolerance and lower static current but requires CMOS-level drive; versus 74AHC374PW,118, the absence of 3-state control simplifies design where bus contention is not present.

Availability

74AHC377PW,118 is available at Aetrix Electronics and suitable for microcontroller peripheral interfacing, industrial I/O expansion, programmable logic control, and test equipment signal capture requiring stable component supply across automotive and extended-temperature production programs.

Supply support for 74AHC377PW,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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with roots in NXP's standard products division and headquartered in Nijmegen, Netherlands.

The 74AHC series targets high-speed, low-power, pin-compatible replacements for legacy TTL logic in modern 3.3 V and 5 V embedded systems, emphasizing robustness, wide supply range, and industrial temperature qualification.

FAQ

What is the maximum clock frequency supported by the 74AHC377PW,118?

The 74AHC377PW,118 achieves up to 120 MHz maximum frequency under typical conditions (VCC = 5 V, CL = 15 pF). At higher load capacitance (50 pF), the usable limit drops to 75 MHz. These values assume clean clock edges meeting the specified 20 ns/V input transition rate and proper PCB layout with local decoupling.

Can the 74AHC377PW,118 operate with a 2.5 V supply?

Yes - the 74AHC377PW,118 is fully specified from 2.0 V to 5.5 V. At 2.5 V, propagation delay increases to ≤16.0 ns (CL = 50 pF), and VIH/VIL thresholds scale proportionally (e.g., VIH ≈ 1.8 V). All DC and AC parameters remain guaranteed across this range per the datasheet's recommended operating conditions table.

Is the E (enable) input level-sensitive or edge-triggered?

The E input is level-sensitive: it must be LOW to allow data transfer on the next CP rising edge, and must remain stable for at least the specified set-up time (4.5 ns at 5 V) before that edge. When E is HIGH, outputs retain their last state regardless of CP activity - no edge detection or internal latching of E occurs.

Does the 74AHC377PW,118 include power-on reset or initialization circuitry?

No - the 74AHC377PW,118 has no internal power-on reset. Output states (Q0–Q7) are undefined at power-up and depend on initial D input levels and the first valid CP edge with E = LOW. External reset sequencing or known startup conditions must be implemented in the system design to ensure deterministic initial state.