Texas Instruments CD74FCT374M96G4

Overview

CD74FCT374M96G4 from Texas Instruments is a BiCMOS octal edge-triggered D-type flip-flop with 3-state outputs, designed for bus interface and register applications. It features 48-mA sink current, 70-MHz maximum clock frequency, 2-ns data setup/hold times, and output voltage swing limited to 3.7 V for EMI reduction in 5-V digital systems.

For engineers reviewing the CD74FCT374M96G4 datasheet, CD74FCT374M96G4 pinout, CD74FCT374M96G4 application, or CD74FCT374M96G4 equivalent, key selection criteria include 3-state bus-driving capability, low-output-swing BiCMOS architecture, guaranteed timing at 5 V, and compatibility with TTL-level inputs in industrial temperature range (0°C to 70°C).

Technical Context

This device implements eight independent D-type latches triggered on the rising edge of CLK, with asynchronous 3-state control via OE. Its BiCMOS output stage combines bipolar pull-down and CMOS pull-up transistors to limit VOH to ~3.7 V at VCC = 5 V, reducing ground bounce and power-bus ringing during simultaneous switching.

Input buffering isolates internal logic from VCC noise, while SCR latch-up-resistant process ensures robustness. OE operates independently of register state-outputs enter high-impedance without affecting stored data, enabling hot-swappable bus arbitration and multi-master I/O port operation.

Key Specifications

Pinout & Package

CD74FCT374M96G4 is housed in a 20-pin plastic small-outline (SOIC) package (Package Code M), with 12.8 mm × 7.5 mm body size and 1.27 mm lead pitch. Pin 10 is GND; Pin 11 is VCC; Pin 1 is OE; Pin 20 is CLK.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal D-type flip-flop with 3-state output applications.

Compared with SN74FCT374N and 74ACT374PC, CD74FCT374M96G4 delivers superior bus-driving capability and EMI-suppressed output swing in a space-saving SOIC package-critical for high-density industrial control boards requiring reliable multi-drop signaling.

Availability

CD74FCT374M96G4 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, microcontroller peripheral expansion, and automated test equipment requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production lots.

Supply support for CD74FCT374M96G4 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 global semiconductor leader founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.

CD74FCT374M96G4 belongs to TI's FCT logic family-designed specifically for 5-V systems needing TTL-compatible inputs, low-noise BiCMOS outputs, and robust bus-interface functionality in commercial-temperature applications.

FAQ

What is the maximum clock frequency supported by CD74FCT374M96G4?

The CD74FCT374M96G4 supports a maximum clock frequency of 70 MHz under recommended operating conditions (VCC = 4.75 V to 5.25 V, TA = 0°C to 70°C). This value is verified across production lots and reflects guaranteed timing performance-not a typical or derated figure. The CD74FCT374M96G4 achieves this using BiCMOS circuitry that balances speed and power efficiency, making it suitable for high-throughput data latching in real-time control systems.

Does CD74FCT374M96G4 have true 5-V TTL-compatible inputs?

Yes, CD74FCT374M96G4 features buffered TTL-compatible inputs with VIH = 2.0 V (min) and VIL = 0.8 V (max) at VCC = 5 V, ensuring reliable interfacing with standard 74LS and 74F logic families. Its input structure includes hysteresis-free buffering that maintains noise margins while rejecting supply-induced transients-confirmed in TI's SCBA004 application report. The CD74FCT374M96G4 does not require external level-shifting when driven by legacy TTL sources.

How does the 3.7-V output voltage swing of CD74FCT374M96G4 reduce EMI?

The CD74FCT374M96G4 limits VOH to approximately 3.7 V (two diode drops below VCC) via its BiCMOS output stage, which suppresses high-frequency ringing on power and ground rails during simultaneous switching. This design reduces dv/dt-related radiation and minimizes ground bounce in multi-load bus configurations. Measured noise characteristics show VOL(P) ≤ 1.0 V and VOH(V) ≥ 0.5 V under dynamic 50-pF loading-directly attributable to the CD74FCT374M96G4's clamped output architecture.

Can CD74FCT374M96G4 retain stored data while outputs are in high-impedance?

Yes, CD74FCT374M96G4 retains registered data regardless of OE state: when OE is high, outputs go high-impedance but internal flip-flop states remain unchanged and can be updated on subsequent CLK edges. This behavior is explicitly documented in the functional table and logic diagram-OE affects only output drivers, not storage elements. Engineers use this feature in CD74FCT374M96G4-based I/O ports to decouple data capture from bus arbitration timing.

What thermal considerations apply to CD74FCT374M96G4 in continuous operation?

CD74FCT374M96G4 has a package thermal impedance (θJA) of 58°C/W in the SOIC (M) package. At maximum ICC (80 µA) and worst-case IOL (48 mA per pin on all eight outputs), junction temperature rise remains within safe limits (<20°C) at ambient ≤70°C with standard 2-layer PCB copper. No heatsink is required, but localized 1-oz copper pour under pins 10 (GND) and 11 (VCC) is recommended to maintain thermal stability. This thermal profile is validated in TI's SCBS739 datasheet.