Nexperia USA Inc. 74HCT107D,653

Overview

74HCT107D,653 from Nexperia is a dual negative-edge-triggered JK flip-flop with asynchronous active-LOW reset, designed for synchronous logic control in digital systems. It features two independent J/K inputs, complementary Q/Q̅ outputs per section, 14-pin SO14 package, TTL-compatible input thresholds (VIH = 2.0 V min at VCC = 4.5–5.5 V), and operates across -40 °C to +125 °C. Used in state machines, counters, and clock-domain synchronization where edge-triggered bistable storage is required.

For engineers reviewing the 74HCT107D,653 datasheet, 74HCT107D,653 pinout, 74HCT107D,653 application, or 74HCT107D,653 equivalent, key selection criteria include negative-edge clocking behavior, asynchronous reset timing (trec = 14 ns typ at VCC = 4.5 V), output drive capability (VOH ≥ 3.98 V at IO = –4 mA), input compatibility with legacy TTL logic families, and SO14 thermal derating (10.1 mW/K above 100 °C).

Technical Context

This device implements two independent JK flip-flops sharing no internal coupling-each has dedicated J, K, CP, R, Q, and Q̅ terminals. The asynchronous reset overrides clock and J/K states, forcing Q = LOW and Q̅ = HIGH regardless of CP edge. Operation requires J/K inputs stable for tsu = 20 ns (min) before the HIGH-to-LOW clock transition.

Internal CMOS circuitry provides TTL-level input recognition (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V), rail-to-rail output swing (VOH ≥ 3.98 V, VOL ≤ 0.26 V at IO = ±4 mA), and low static current (ICC ≤ 4.0 μA typ at VCC = 5.5 V). Propagation delay tpd from CP to Q is 19 ns (typ) at VCC = 4.5 V and CL = 50 pF.

Key Specifications

Pinout & Package

74HCT107D,653 is housed in a plastic small outline package (SO14), SOT108-1, with 14 leads and 3.9 mm body width. Pin 1 is marked by a notch or dot; pin numbering follows standard counter-clockwise layout from top-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual JK flip-flop applications.

Compared with 74HC107D,653 and SN74LS107AN, the 74HCT107D,653 uniquely balances TTL input compatibility, low power (ICC < 80 μA), and industrial temperature support - making it optimal for new 5 V digital control designs requiring reliability and interoperability.

Availability

74HCT107D,653 is available at Aetrix Electronics and suitable for industrial automation controllers, test instrumentation, communication interface modules, and legacy bus adapters requiring stable component supply over extended temperature ranges and long production lifecycles.

Supply support for 74HCT107D,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-volume logic, analog, and discrete components, with core expertise in automotive-grade and industrial reliability assurance.

The 74HCT107D,653 belongs to Nexperia's 74HCT logic family, engineered specifically for seamless integration between TTL-based legacy systems and modern CMOS-based controllers - emphasizing input compatibility, thermal robustness, and long-term supply stability.

FAQ

What is the minimum pulse width required on the clock input for reliable operation?

The minimum HIGH or LOW pulse width (tW) on CP is 16 ns (min) at VCC = 4.5 V. This ensures sufficient time for internal metastability resolution and state capture. Violating this spec risks skipped edges or undefined output states, especially under temperature extremes or voltage droop.

Can the reset input be used as a synchronous load control signal?

No - 1R and 2R are strictly asynchronous and active LOW. They override clock and J/K inputs immediately upon assertion, with no dependency on CP timing. For synchronous load behavior, use J=1/K=0 (set) or J=0/K=1 (reset) with CP edge triggering instead.

Does the 74HCT107D,653 support hot insertion or live swapping?

No - it lacks hot-swap protection circuitry such as power-on reset, I/O clamp diodes rated for back-drive, or slew-rate controlled outputs. Applying VCC while signals are driven may exceed IIK limits (±20 mA) and cause latch-up or permanent damage.

How does the propagation delay vary with load capacitance?

tpd increases linearly with load capacitance: typical CP→Q delay is 19 ns at CL = 50 pF, rising to ~24 ns at CL = 100 pF (extrapolated from datasheet trend). Designers must account for this in timing closure, especially in cascaded flip-flop chains driving PCB traces or multiple fanouts.