Nexperia USA Inc. 74HC377DB-Q100J

Overview

74HC377DB-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, delivering 8 synchronized storage elements for synchronous data latching in engine control units and ADAS domain controllers. It features CMOS-level inputs, AEC-Q100 Grade 1 qualification (−40 °C to +125 °C), and propagation delay as low as 13 ns at VCC = 6.0 V.

For engineers reviewing the 74HC377DB-Q100 datasheet, 74HC377DB-Q100 pinout, 74HC377DB-Q100 application, or 74HC377DB-Q100 equivalent, key selection criteria include data-enable-controlled edge-triggered capture timing, automotive temperature range compliance, SO20/TSSOP20 package compatibility, and TTL-compatible 74HCT variant availability for mixed-logic interfacing.

Technical Context

This device implements eight independent D-type flip-flops sharing a common clock (CP) and a single active-low data enable (E) input. When E is LOW, each Qn output captures the corresponding Dn input on the LOW-to-HIGH CP transition, subject to set-up (min 10 ns at VCC = 6.0 V) and hold (min 4 ns) timing constraints.

The logic supports robust noise immunity via CMOS input thresholds (VIH = 4.2 V, VIL = 1.8 V at VCC = 6.0 V), clamp diodes enabling overvoltage-tolerant interfacing, and latch-up immunity exceeding 100 mA per JESD78 Class II Level B - critical for under-hood automotive signal conditioning.

Key Specifications

Pinout & Package

SOT339-1 (SSOP20) plastic shrink small outline package: 20-pin gull-wing, 0.65 mm lead pitch, 7.2 mm × 5.3 mm body size, 1.0 mm max height, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC377DB-Q100, the SO20 variant offers easier rework but lower density, while the TSSOP20 HCT version trades CMOS noise margin for TTL interoperability - both retain identical function, timing, and AEC-Q100 qualification.

Availability

74HC377DB-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, body control modules, and electric power steering systems requiring stable component supply across extended automotive temperature ranges.

Supply support for 74HC377DB-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 efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile applications.

The 74HC377-Q100 series belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for deterministic, noise-immune data synchronization in harsh-temperature electronic control units.

FAQ

Is 74HC377DB-Q100 pin-compatible with standard 74HC377 packages?

Yes - 74HC377DB-Q100 uses SOT339-1 (SSOP20), which shares identical pin numbering and electrical functionality with SO20 (SOT163-1) and TSSOP20 (SOT360-1) variants. Pin 1 (E), pins 2–9/12–19 (D/Q pairs), pin 10 (GND), pin 11 (CP), and pin 20 (VCC) match across all versions, enabling drop-in replacement in layout-constrained designs.

What is the maximum clock frequency supported at 125 °C ambient?

At Tamb = +125 °C and VCC = 6.0 V, the guaranteed maximum clock frequency is 24 MHz, derived from the worst-case propagation delay (41 ns) and pulse width (20 ns) specifications in Table 7. This ensures reliable operation in under-hood environments where thermal derating applies.

Does the data enable (E) input affect output state when held HIGH?

Yes - when E is HIGH, all Qn outputs retain their last latched values regardless of CP transitions or Dn changes. The function table confirms "no change" behavior for E = HIGH, making it a true master enable for synchronous data freeze without requiring external gating logic.

Can 74HC377DB-Q100 interface directly with 3.3 V microcontrollers?

Yes - with VCC = 3.3 V, VIH = 2.1 V (min) and VIL = 1.35 V (max) per Table 6, fully compatible with standard 3.3 V CMOS outputs. Outputs drive 4 mA at VOH ≥ 2.9 V, meeting 3.3 V logic-high threshold requirements without level translation.