Nexperia USA Inc. 74HC377D,653

Overview

74HC377D,653 from Nexperia is an octal positive-edge-triggered D-type flip-flop with data enable (E), designed for synchronous data latching in digital logic systems. It operates across 2.0 V–6.0 V supply, delivers propagation delay as low as 13 ns at VCC = 6.0 V, supports -40 °C to +125 °C ambient range, and features CMOS-level inputs. It is used in address/data register staging, bus interface synchronization, and control signal conditioning in industrial microcontroller peripherals.

For engineers reviewing the 74HC377D,653 datasheet, 74HC377D,653 pinout, 74HC377D,653 application, or 74HC377D,653 equivalent, key selection considerations include data enable timing margin (tsu = 10 ns, th = 4 ns at VCC = 6.0 V), output drive capability (±25 mA), SO20 package thermal derating (12.3 mW/K above 109 °C), and compatibility with 74HCT377 for TTL-level input 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. Each flip-flop captures the state of its Dn input on the LOW-to-HIGH transition of CP only when E is LOW - enabling synchronized parallel data capture with global gating control.

Input clamp diodes allow safe interfacing to voltages exceeding VCC when current-limiting resistors are used. The device complies with JEDEC JESD7A (2.0 V–6.0 V) and JESD8C (2.7 V–3.6 V), and meets JESD78 Class II Level B latch-up immunity (>100 mA).

Key Specifications

Pinout & Package

74HC377D,653 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads and 7.5 mm body width. Thermal performance includes linear power dissipation derating of 12.3 mW/K above 109 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC377D,653, the 74HCT377D,653 provides guaranteed TTL input compatibility at the cost of slightly higher supply current, while the obsolete SN74HC377N sacrifices surface-mount manufacturability and thermal capability - making the SO20 74HC377D,653 optimal for new industrial PCB designs requiring robust, high-density latching.

Availability

74HC377D,653 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller bus interface, and digital control signal conditioning requiring stable component supply across extended temperature ranges.

Supply support for 74HC377D,653 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 core expertise in automotive-grade and industrial reliability.

The 74HC377 belongs to Nexperia's 74HC logic family - engineered for low-power, wide-voltage-range digital interfacing in harsh-environment applications including factory automation and energy infrastructure.

FAQ

What is the maximum clock frequency supported by 74HC377D,653?

The maximum clock frequency is 83 MHz at VCC = 6.0 V and CL = 50 pF, derived from tW(min) = 14 ns (pulse width) and fmax = 1/(2 × tW). At VCC = 4.5 V, fmax drops to 70 MHz due to increased propagation delay (tpd = 16 ns typ). Operation above these limits risks setup/hold violations and metastability.

Can 74HC377D,653 interface directly with 3.3 V microcontrollers?

Yes - at VCC = 3.3 V, VIH(min) = 2.1 V and VIL(max) = 1.35 V per Table 6, providing 0.95 V high-level and 1.95 V low-level noise margins against standard 3.3 V CMOS outputs. No level shifting is needed for bidirectional compatibility with 3.3 V GPIOs.

Is the E (enable) input internally debounced or filtered?

No - the E input is asynchronous and unfiltered. Its state must be stable for at least one setup time (10 ns at VCC = 6.0 V) before the CP rising edge to ensure predictable output behavior. External RC filtering or synchronous assertion via system clock is required for noisy control lines.

Does 74HC377D,653 support hot-swap or live-insertion?

No - the device lacks hot-swap protection circuitry. Applying VCC while inputs are driven can cause latch-up or excessive current through input clamps. Power sequencing must ensure VCC is stable before applying any input signals, per Absolute Maximum Ratings (Table 4).