NXP Semiconductors 74HC107DB,118

Overview

74HC107DB,118 from Nexperia is a dual negative-edge-triggered JK flip-flop with asynchronous active-LOW reset, CMOS-level inputs, 2.0 V to 6.0 V supply range, and SO14 (SOT108-1) package. It implements synchronous state control per flip-flop using individual J/K inputs, clock (CP), and reset (R), with complementary Q/Q̅ outputs. Used in digital logic sequencing, counters, and register control within industrial control panels and instrumentation signal conditioning circuits.

For engineers reviewing the 74HC107DB,118 datasheet, 74HC107DB,118 pinout, 74HC107DB,118 application, or 74HC107DB,118 equivalent, this page delivers verified functional behavior, SO14 pin mapping, timing constraints (e.g., 19 ns t_pd at 4.5 V), static voltage thresholds (VIH = 3.15 V min at VCC = 4.5 V), and direct substitution guidance for legacy 74HC107 variants.

Technical Context

This device contains two independent JK flip-flops sharing no internal logic; each features separate J, K, CP, R, Q, and Q̅ terminals. The asynchronous reset operates independently of clock edges and forces Q = LOW / Q̅ = HIGH regardless of J/K states. Edge triggering occurs only on HIGH-to-LOW transitions of CP, requiring J/K inputs to be stable for ≥20 ns (at VCC = 4.5 V) before that transition.

Input clamp diodes allow safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Output drive capability is ±4.0 mA at VCC = 4.5 V, with VOH ≥ 3.98 V and VOL ≤ 0.26 V under load, ensuring reliable TTL/CMOS interface compatibility across temperature ranges from −40 °C to +125 °C.

Key Specifications

Pinout & Package

74HC107DB,118 is housed in a plastic small outline package (SO14), SOT108-1, with 14 leads and 3.9 mm body width. Pin numbering follows standard IC orientation with pin 1 marked by a notch or dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC107DB,118, the 74HC107D,653 sacrifices high-temperature reliability for lower cost, while the 74HCT107DB,118 trades CMOS input thresholds for guaranteed TTL interoperability-both maintain pin-for-pin compatibility but serve distinct voltage-domain integration requirements.

Availability

74HC107DB,118 is available at Aetrix Electronics and suitable for industrial automation controllers, programmable logic sequencers, and embedded instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC107DB,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 global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.

The 74HC107 belongs to Nexperia's HC-series logic family, engineered for low-power, high-noise-immunity digital control in industrial, automotive, and consumer systems where predictable timing and robust operation are essential.

FAQ

Is 74HC107DB,118 pin-compatible with older 74HC107 variants in SO14 packages?

Yes - 74HC107DB,118 uses the standard SO14 (SOT108-1) footprint and matches the pinout of all 74HC107 devices in that package, including legacy versions from Philips/NXP. No PCB redesign is needed for drop-in replacement, provided the +125 °C rating meets system thermal requirements.

What is the minimum pulse width required on the reset (R) input for reliable assertion?

The reset input requires a minimum pulse width of 20 ns at VCC = 4.5 V (per Table 7). This ensures the internal reset circuit fully discharges node capacitance and forces Q to LOW before the next clock edge, even under worst-case process/voltage/temperature conditions.

Can 74HC107DB,118 drive LED indicators directly?

No - while its outputs can source/sink ±4.0 mA, driving LEDs typically requires 5–20 mA for visibility. Direct connection risks violating VOL/VOH specs and may cause excessive junction heating. Use a series current-limiting resistor and/or buffer transistor for LED loads.

Does this device support hot insertion or live swapping in backplane systems?

No - 74HC107DB,118 lacks hot-swap protection circuitry such as power-on reset, I_OFF, or partial-power-down modes. Applying VCC while signals are active may cause bus contention or latch-up. Power sequencing must ensure VCC is stable before applying any input signals.