Nexperia USA Inc. 74AHCT74PW,112

Overview

74AHCT74PW,112 from Nexperia is a dual positive-edge-triggered D-type flip-flop with asynchronous set (active LOW) and reset (active LOW), complementary Q/Q̅ outputs per channel, 5 V TTL-level input compatibility, and operation up to 140 MHz at VCC = 5 V. It serves as a synchronous storage element in digital control logic, clock domain synchronization, and data latching circuits in industrial PLC I/O modules.

For engineers reviewing the 74AHCT74PW,112 datasheet, 74AHCT74PW,112 pinout, 74AHCT74PW,112 application, or 74AHCT74PW,112 equivalent, key selection criteria include TTL-compatible input thresholds, 14-pin TSSOP package thermal performance, propagation delay ≤9.7 ns (CL = 50 pF), and guaranteed operation from –40 °C to +125 °C.

Technical Context

This device implements two independent edge-triggered D flip-flops sharing no internal coupling-each with dedicated D, CP, SD, RD, Q, and Q̅ terminals. The asynchronous SD and RD inputs override clock action and operate independently of CP timing, enabling immediate state forcing without clock dependency.

Schmitt-trigger action on all clock inputs ensures robust noise immunity against slow-rising or noisy clock edges, while CMOS output stages deliver rail-to-rail swing and ±8 mA drive capability. Input voltage tolerance extends to 7.0 V, supporting mixed-voltage interface scenarios where inputs may exceed VCC.

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1); 14 leads; body width 4.4 mm; 0.65 mm lead pitch; exposed pad not present; RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC74APWR and 74HC74PW,112, the 74AHCT74PW,112 uniquely bridges 5 V TTL and modern CMOS systems via TTL-compatible inputs while maintaining full 5 V operation and industrial temperature range-making it optimal for mixed-signal upgrades and legacy interface preservation.

Availability

74AHCT74PW,112 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, digital power supply sequencing, and test equipment digital pattern generators requiring stable component supply across extended temperature ranges.

Supply support for 74AHCT74PW,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

Nexperia is a leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with core expertise in energy-efficient, high-reliability silicon solutions for automotive, industrial, and consumer markets.

The 74AHCT series targets industrial and automotive applications requiring robust 5 V logic interoperability, offering TTL-compatible inputs, extended temperature qualification, and proven reliability in mission-critical control systems.

FAQ

Can 74AHCT74PW,112 operate reliably at 3.3 V?

No. The 74AHCT74PW,112 is specified only for VCC = 4.5 V to 5.5 V. At 3.3 V, input thresholds (VIH = 2.0 V) become noncompliant with standard 3.3 V logic levels, and propagation delays increase beyond specification. Use 74LVC74 for 3.3 V operation.

What is the maximum capacitive load this device can drive at 100 MHz?

At 100 MHz, the recommended maximum load is 15 pF per output, based on fmax = 140 MHz (CL = 15 pF) and derating curves. Driving >15 pF at 100 MHz risks violating setup/hold timing due to increased tpd and reduced noise margin-add series termination if routing to >20 pF loads.

How does the Schmitt-trigger clock input improve system robustness?

The Schmitt-trigger action provides hysteresis (~0.4 V typical) on the 1CP and 2CP inputs, rejecting noise spikes <0.4 V and tolerating slow rise/fall times up to 20 ns/V. This eliminates false triggering from EMI or long PCB traces-critical in electrically noisy industrial or automotive environments.

Is the 74AHCT74PW,112 pin-compatible with older 74LS74 devices?

Yes-pinout matches industry-standard 14-pin dual D flip-flops (e.g., 74LS74, 74HC74). All signals (1RD, 1D, 1CP, 1SD, 1Q, 1Q̅, GND, 2Q̅, 2Q, 2SD, 2CP, 2D, 2RD, VCC) occupy identical positions. However, note that 74AHCT74PW,112 has push-pull outputs (not open-collector) and requires external pull-ups only if wired-AND logic is needed.