Renesas 74HC112FPEL-E

Overview

74HC112FPEL-E from Renesas Electronics is a dual J-K flip-flop with independent preset and clear inputs, edge-triggered on the negative clock transition, operating across 2–6 V supply, with 17 ns typical propagation delay (CL = 50 pF) and ±25 mA output drive-used in synchronous logic control, state machines, and clock division circuits.

For engineers reviewing the 74HC112FPEL-E datasheet, 74HC112FPEL-E pinout, 74HC112FPEL-E application, or 74HC112FPEL-E equivalent, key selection criteria include negative-edge clocking behavior, independent asynchronous preset/clear functionality, wide VCC range, low static current (2 µA max), and SOP-16 JEITA package compatibility with industrial temperature operation (–40°C to +85°C).

Technical Context

The 74HC112FPEL-E implements two independent edge-triggered J-K flip-flops, each with fully asynchronous active-low preset (PR) and clear (CLR) inputs that override clock and data states. Its negative-edge clock sensitivity ensures deterministic state transitions synchronized to falling edges only.

Each section supports full toggle, set, reset, and hold operations per the function table; propagation delays are specified for clock-to-Q (26 ns max at 6 V), clear-to-Q (30 ns max), and preset-to-Q (30 ns max), all tested under CL = 50 pF load conditions.

Key Specifications

Pinout & Package

SOP-16 pin package (JEITA PRSP0016DH-B, Renesas code FP-16DAV), surface-mount, 1.27 mm pitch, 5.5 mm × 10.06 mm body size, Ni/Pd/Au-plated terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC112DR and MC74HC112ADTR2G, the 74HC112FPEL-E offers Renesas-specific quality assurance for industrial use, EL taping (2,000 pcs/reel), and documented SOP-16 mechanical compliance per JEITA PRSP0016DH-B - making it optimal for volume production with traceable sourcing and long-term availability planning.

Availability

74HC112FPEL-E is available at Aetrix Electronics and suitable for industrial control sequencing, digital clock division, test equipment state machines, and legacy bus interface logic requiring stable component supply, consistent SOP-16 packaging, and guaranteed –40°C to +85°C operation.

Supply support for 74HC112FPEL-E 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

Renesas Electronics Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and logic devices for industrial, automotive, and infrastructure markets.

The 74HC112FPEL-E belongs to Renesas' legacy HC logic family, designed for robust, low-power, pin-compatible replacements of standard TTL functions in industrial automation and instrumentation systems.

FAQ

What is the clocking behavior of the 74HC112FPEL-E?

The 74HC112FPEL-E is a negative-edge-triggered dual J-K flip-flop: each flip-flop changes state only on the falling edge of its respective clock input (1CK or 2CK). Preset and clear inputs operate asynchronously and override clocked behavior. This ensures deterministic timing in synchronous digital systems where edge alignment is critical, and the 74HC112FPEL-E maintains this behavior across its full 2–6 V supply and –40°C to +85°C operating range.

Does the 74HC112FPEL-E support 3.3 V operation?

Yes, the 74HC112FPEL-E is fully specified for 3.3 V operation: VIH(min) = 2.1 V and VIL(max) = 1.35 V at VCC = 3.3 V (interpolated from 2.0 V and 4.5 V data), and all AC parameters-including 17 ns typical tPD and 28 MHz fMAX-are valid within the 2–6 V range. The 74HC112FPEL-E thus interoperates reliably with 3.3 V microcontrollers and FPGAs without level translation.

What happens if both preset and clear are asserted low simultaneously on the 74HC112FPEL-E?

When both preset (PR) and clear (CLR) are low on the same flip-flop of the 74HC112FPEL-E, Q and Q̅ both go high-but the outputs become unpredictable when PR and CLR return high simultaneously. The datasheet explicitly warns that Q and Q̅ are undefined in this condition. Designers must avoid asserting both active-low controls concurrently; the 74HC112FPEL-E requires proper sequencing or arbitration logic to prevent metastability.

Is the 74HC112FPEL-E pin-compatible with through-hole HD74HC112P?

No-the 74HC112FPEL-E uses SOP-16 (JEITA PRSP0016DH-B), while the HD74HC112P uses DIP-16 (PRDP0016AE-B). Although both share identical pin numbering and signal assignment (1=1J, 2=1K, ..., 16=VCC), their physical dimensions, pitch (1.27 mm vs 2.54 mm), and mounting methods differ. The 74HC112FPEL-E is not a drop-in replacement for through-hole assembly but matches pinout for redesign migration to surface-mount.

What is the maximum clock frequency supported by the 74HC112FPEL-E?

The 74HC112FPEL-E supports a maximum clock frequency of 28 MHz over its full operating temperature range (–40°C to +85°C) at VCC = 6 V, and 24 MHz at VCC = 4.5 V. These values derive directly from the "fmax" specification in the switching characteristics table. At 2 V supply, fmax drops to 5 MHz. The 74HC112FPEL-E's performance scales with VCC, and designers must verify timing margins using worst-case propagation delays (e.g., 33 ns tPLH/tPHL at 6 V, –40°C to +85°C) for reliable operation.