Texas Instruments CY74FCT2374CTSOCG4

Overview

CY74FCT2374CTSOCG4 from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, designed for high-speed bus-oriented applications. It features 5.2 ns propagation delay (tPLH/tPHL), 25-Ω integrated output series resistors to suppress transmission-line reflections, and Ioff support for partial-power-down operation. Operates at 4.75–5.25 V, delivers ±15 mA drive strength, and maintains TTL-compatible input/output logic levels.

For engineers reviewing the CY74FCT2374CTSOCG4 datasheet, CY74FCT2374CTSOCG4 pinout, CY74FCT2374CTSOCG4 application, or CY74FCT2374CTSOCG4 equivalent, key selection criteria include its 3-state bus interface capability, 250-MHz typical switching rate, matched rise/fall times, ESD robustness (2000-V HBM), and compatibility with legacy FCT/F logic families in SOIC-20 packaging.

Technical Context

This device implements eight independent D-type latches triggered on the low-to-high transition of a common buffered clock (CP) input. Each flip-flop samples its dedicated Dn input under strict setup (1.5 ns min) and hold (1 ns min) timing constraints relative to CP↑.

Output-enable (OE) controls all eight outputs simultaneously: OE = L enables data output; OE = H places outputs in high-impedance state without affecting internal register states. The Ioff circuitry actively disables outputs when VCC = 0 V, preventing backflow current during partial power-down sequences.

Key Specifications

Pinout & Package

Package: SOIC-20 (DW package drawing), 7.6 mm × 12.8 mm body, 2.65 mm max height, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal D-type register applications.

Compared with CY74FCT374CTSOC, CY74FCT2374CTSOCG4 provides integrated 25-Ω termination for immediate noise reduction without layout changes; versus SN74FCT2374CTSOCT, it offers identical functionality in tube packaging - making CY74FCT2374CTSOCG4 optimal for low-volume industrial builds requiring immediate noise mitigation.

Availability

CY74FCT2374CTSOCG4 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, and legacy test equipment interfaces requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for CY74FCT2374CTSOCG4 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

Texas Instruments is a U.S.-based semiconductor company specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.

The CY74FCT2374CTSOCG4 belongs to TI's FCT logic family, engineered for high-speed, low-noise 5-V bus interfacing with emphasis on signal integrity, power-down safety, and backward compatibility with legacy TTL systems.

FAQ

What is the maximum clock frequency supported by CY74FCT2374CTSOCG4?

CY74FCT2374CTSOCG4 has a typical switching rate of 250 MHz and a maximum propagation delay of 5.2 ns, supporting reliable operation up to 100 MHz in synchronous bus applications with adequate setup/hold margins. Its performance is validated across –40°C to +85°C under 4.75–5.25 V supply conditions per TI's SCCS040A datasheet.

Does CY74FCT2374CTSOCG4 require external pull-up or pull-down resistors on unused inputs?

Yes - per TI's recommended operating conditions, all unused inputs of CY74FCT2374CTSOCG4 must be held at VCC or GND to ensure proper device operation and prevent floating-node-induced current leakage or metastability. This applies to unused D inputs, CP, and OE pins.

How does the Ioff feature of CY74FCT2374CTSOCG4 protect system-level power sequencing?

The Ioff circuitry in CY74FCT2374CTSOCG4 disables all outputs when VCC = 0 V, limiting leakage current to ±1 µA even with up to 4.5 V applied at output pins. This prevents damaging backflow current during partial-power-down scenarios - such as hot-plug insertion or staggered rail startup - preserving downstream IC integrity.

Can CY74FCT2374CTSOCG4 replace CY74FCT374T in an existing design without layout changes?

Yes - CY74FCT2374CTSOCG4 is functionally and pinout-compatible with CY74FCT374T, sharing identical SOIC-20 footprint and logic behavior. However, CY74FCT2374CTSOCG4 adds integrated 25-Ω output series resistors, which may reduce or eliminate need for external termination resistors in noise-sensitive applications.

What is the thermal performance of CY74FCT2374CTSOCG4 in SOIC-20 package?

CY74FCT2374CTSOCG4 in SOIC-20 (DW package) has a junction-to-ambient thermal impedance (θJA) of 58°C/W under standard JEDEC test conditions. This enables continuous operation at full drive strength (±15 mA per output) within its –40°C to +85°C ambient range when mounted on 1-in² 2-oz copper PCB area with minimal airflow.