NXP Semiconductors 74ABT74N,112

Overview

74ABT74N,112 from NXP Semiconductors (formerly Philips) is a dual positive edge-triggered D-type flip-flop with asynchronous set (SD) and reset (RD) inputs, true/complementary outputs per stage, 5V supply operation, 250 MHz maximum clock frequency, and 3.0 ns typical tPLH propagation delay. It serves as a synchronous storage element in high-speed digital logic control paths, such as address latching and state register stages in industrial microcontroller peripherals.

For engineers reviewing the 74ABT74N,112 datasheet, 74ABT74N,112 pinout, 74ABT74N,112 application, or 74ABT74N,112 equivalent, key selection criteria include guaranteed 5V-tolerant AC performance across –40°C to +85°C, sub-4 ns propagation delays under 50 pF load, asynchronous active-low control timing, and compatibility with ABT-family bus interface logic.

Technical Context

The 74ABT74N,112 implements two independent D-type flip-flops sharing no internal coupling-each with dedicated CPn, Dn, SDn, RDn, Qn, and Qn terminals. Clock triggering occurs on the low-to-high transition at a defined voltage threshold, independent of input slew rate, enabling robust timing in mixed-slew environments.

Asynchronous set and reset override clock action when asserted low, forcing Qn = H / Qn = L (set) or Qn = L / Qn = H (reset), regardless of CPn or Dn state. Data transfer requires Dn stability for ≥2.4 ns before CPn rising edge (tsu) and ≥0 ns after (th), per AC specifications at VCC = 5.0 V.

Key Specifications

Pinout & Package

74ABT74N,112 is supplied in a 14-pin plastic DIP (dual in-line package) per SOT27-1 drawing, with 2.54 mm pitch, through-hole mounting, and industry-standard pin spacing compatible with legacy prototyping and wave-solder assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74ABT74N and 74ACT74PC, the 74ABT74N,112 delivers identical ABT logic performance and pinout while offering NXP's long-term industrial supply continuity and documented –40°C to +85°C qualification under Philips/NXP legacy product stewardship.

Availability

74ABT74N,112 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, microcontroller address latching, digital test equipment pattern generation, and legacy bus interface synchronizers requiring stable component supply across extended temperature ranges.

Supply support for 74ABT74N,112 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Philips' pioneering logic and analog design heritage.

The 74ABT74N,112 belongs to NXP's legacy ABT (Advanced BiCMOS Technology) logic family, engineered for high-speed 5V TTL-compatible operation with enhanced noise immunity and drive capability in industrial control and instrumentation systems.

FAQ

What is the maximum operating frequency of the 74ABT74N,112?

The 74ABT74N,112 supports a maximum clock frequency of 250 MHz at Tamb = +25°C and VCC = 5.0 V, as specified in its AC Electrical Characteristics table. At full industrial temperature range (–40°C to +85°C), the guaranteed minimum fMAX is 150 MHz. This makes the 74ABT74N,112 suitable for high-speed digital control circuits where precise edge-aligned storage is required without compromising timing margins.

Does the 74ABT74N,112 support asynchronous set and reset functions?

Yes, the 74ABT74N,112 features fully asynchronous active-low set (SDn) and reset (RDn) inputs for each flip-flop stage. When SDn is low, Qn is forced high and Qn low; when RDn is low, Qn is forced low and Qn high-regardless of clock or data state. These controls operate independently per stage and override clock-triggered behavior, enabling deterministic initialization or fault recovery in safety-critical logic designs using the 74ABT74N,112.

What are the recommended supply voltage and operating temperature limits for the 74ABT74N,112?

The 74ABT74N,112 is rated for DC supply voltage from 4.5 V to 5.5 V and operates across –40°C to +85°C ambient temperature. Its Absolute Maximum Ratings allow VCC up to +7.0 V, but sustained operation outside the recommended range may compromise timing accuracy or reliability. These limits ensure robust performance in industrial environments where the 74ABT74N,112 is commonly deployed in programmable logic controllers and embedded instrumentation.

Can the 74ABT74N,112 drive standard TTL loads directly?

Yes, the 74ABT74N,112 provides ABT-family output drive strength: –15 mA for high-level (IOH) and 20 mA for low-level (IOL) sourcing/sinking, matching standard TTL input requirements. This allows direct connection to multiple 74LS or 74F loads without buffering. The 74ABT74N,112's VIH/VIL thresholds (2.0 V/0.8 V) are also TTL-compatible, ensuring reliable logic-level interpretation in mixed-technology systems.

Is the 74ABT74N,112 pin-compatible with other 74-series dual D-flip-flops like the 74LS74?

No-the 74ABT74N,112 shares the same 14-pin DIP footprint and basic function as the 74LS74, but pin assignments differ: SDn/RDn are on pins 1/2 and 12/13 in the 74ABT74N,112, whereas the 74LS74 places them on pins 4/5 and 10/11. Substituting the 74ABT74N,112 for a 74LS74 requires PCB layout revision. Always verify pin mapping against the 74ABT74N,112 datasheet before integration.