Nexperia USA Inc. 74HC377D-Q100J

Overview

74HC377D-Q100 from Nexperia is an automotive-grade octal positive-edge-triggered D-type flip-flop with data enable (E) input, operating across 2.0 V to 6.0 V supply and qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C). It features eight independent D-FFs sharing one clock (CP) and one active-low enable, enabling synchronized latching of parallel data in automotive body control modules, ADAS sensor interfaces, and engine management systems.

For engineers reviewing the 74HC377D-Q100 datasheet, 74HC377D-Q100 pinout, 74HC377D-Q100 application, or 74HC377D-Q100 equivalent, key selection considerations include its SO20 package compatibility, CMOS-level input thresholds, 32 ns typical propagation delay at 4.5 V, and guaranteed operation under automotive temperature and ESD stress conditions per JS-001 Class 2 (≥2000 V HBM).

Technical Context

This device implements eight edge-triggered D flip-flops with a common clock and shared active-low data enable. Its functional behavior is defined by synchronous sampling on the LOW-to-HIGH CP transition only when E is LOW - inputs D0–D7 are latched into Q0–Q7 outputs if setup/hold timing is met; otherwise outputs retain prior state.

The logic supports TTL-compatible inputs for the 74HCT variant and CMOS-level inputs for the 74HC variant. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors, and latch-up immunity exceeds 100 mA per JESD78 Class II Level B.

Key Specifications

Pinout & Package

74HC377D-Q100 is housed in a plastic small outline package (SO20), SOT163-1, with 20 leads and 7.5 mm body width. Pin 1 is marked with a notch or dot; pin numbering follows standard SOIC convention counterclockwise from the index mark.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC377D-Q100, the 74HCT377D-Q100 offers direct TTL-level compatibility at no pinout or timing penalty, while SN74LV377AQPWRQ1 delivers superior speed and wider low-voltage operation but requires board redesign due to incompatible package and pin mapping.

Availability

74HC377D-Q100 is available at Aetrix Electronics and suitable for automotive body control units, ADAS sensor interfaces, and engine management systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC377D-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 delivering high-performance, reliable, and energy-efficient components for automotive, industrial, and consumer markets.

The 74HC377-Q100 belongs to Nexperia's automotive logic portfolio, designed specifically for robust, pin-compatible replacement of legacy 74-series functions in safety-critical vehicle subsystems.

FAQ

What is the maximum clock frequency supported by the 74HC377D-Q100?

The 74HC377D-Q100 supports a maximum clock frequency of 22 MHz at VCC = 4.5 V and CL = 50 pF, based on its 32 ns maximum propagation delay (tpd) and 20 ns minimum pulse width (tW). At VCC = 6.0 V, fmax rises to 24 MHz. These values assume proper signal integrity, decoupling, and adherence to setup/hold timing constraints.

Can the 74HC377D-Q100 interface directly with 3.3 V microcontrollers?

Yes - at VCC = 3.3 V, the 74HC377D-Q100 maintains valid VIH (≥2.1 V) and VIL (≤1.0 V) levels per its static characteristics, ensuring reliable recognition of 3.3 V logic highs and lows. Outputs swing rail-to-rail, providing compatible VOH/VOL for driving 3.3 V inputs without level shifting.

How does the data enable (E) pin affect timing behavior?

When E is HIGH, the flip-flop outputs hold their previous state regardless of CP transitions - no latching occurs. When E goes LOW, the next LOW-to-HIGH CP edge samples Dn inputs, provided tsu (15 ns min at 4.5 V) and th (3 ns min) are met. E must be stable ≥1 setup time before CP rising edge to avoid metastability.

Is there a TSSOP-20 variant of this part, and how does it differ?

Yes - the 74HC377PW-Q100 uses the same die in a TSSOP-20 (SOT360-1) package. It shares identical electrical specifications, timing, and pin function mapping, but has a smaller footprint (4.4 mm body width), lower thermal resistance, and different mechanical mounting requirements. No performance trade-offs exist between SO20 and TSSOP20 variants.