Texas Instruments CD74FCT374M96E4

Overview

CD74FCT374M96E4 from Texas Instruments is an octal edge-triggered D-type flip-flop with 3-state outputs, implemented in BiCMOS technology. It features 48-mA sink current per output, 70-MHz maximum clock frequency, and output voltage swing limited to 3.7 V for EMI reduction - used in bidirectional bus drivers and I/O port buffering in industrial control backplanes.

For engineers reviewing the CD74FCT374M96E4 datasheet, CD74FCT374M96E4 pinout, CD74FCT374M96E4 application, or CD74FCT374M96E4 equivalent, key selection criteria include 3-state enable timing (ten = 1.5–12.5 ns), input setup/hold (2 ns each), and compatibility with 5-V TTL-level systems requiring low-impedance bus driving without pull-ups.

Technical Context

This device uses a hybrid BiCMOS output stage that clamps high-level output to ~3.7 V (two diode drops below VCC), reducing VCC bounce, ground bounce, and EMI during simultaneous switching. Its buffered OE input operates independently of register clocking, enabling output state control without affecting internal data retention.

The flip-flops trigger on the low-to-high CLK transition; all eight outputs are noninverted and support high-impedance isolation when OE is high. Input/output isolation from VCC and SCR latch-up resistance are achieved via dedicated BiCMOS process design and circuit layout.

Key Specifications

Pinout & Package

CD74FCT374M96E4 is supplied in a 20-pin plastic small-outline (SOIC) package (M suffix), 7.5 mm wide, with standard JEDEC MS-013AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74FCT374N and 74ACT374PC, CD74FCT374M96E4 uniquely delivers 3.7-V clamped outputs for EMI reduction, SOIC thermal efficiency (θJA = 58°C/W), and guaranteed 70-MHz operation - making it optimal for space-constrained, noise-sensitive 5-V bus interfaces.

Availability

CD74FCT374M96E4 is available at Aetrix Electronics and suitable for industrial backplane interfaces, microcontroller I/O expansion, test equipment pattern generation, and legacy system data buffering requiring stable component supply and long-term obsolescence management.

Supply support for CD74FCT374M96E4 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, delivering analog, embedded processing, and logic solutions with emphasis on reliability, longevity, and industrial-grade qualification.

CD74FCT374M96E4 belongs to TI's FCT logic family - engineered for high-speed, low-noise 5-V TTL-compatible bus interfacing in industrial automation, instrumentation, and legacy system upgrades.

FAQ

What is the maximum clock frequency supported by CD74FCT374M96E4?

The CD74FCT374M96E4 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 rating is verified by timing measurements including pulse width (7 ns min), setup (2 ns), and hold (2 ns) requirements - ensuring reliable edge-triggered operation in high-speed synchronous systems where CD74FCT374M96E4 serves as a bus latch or I/O register.

Does CD74FCT374M96E4 have true 5-V output swing?

No, CD74FCT374M96E4 does not provide full 5-V output swing. Its BiCMOS output stage clamps VOH to approximately 3.7 V (two diode drops below VCC) to suppress power-bus ringing and EMI. This design choice is intentional and documented in the datasheet - CD74FCT374M96E4 maintains TTL-compatible logic levels (VIH = 2 V, VIL = 0.8 V) while reducing ground/VCC bounce during simultaneous switching.

Can CD74FCT374M96E4 drive a 50-pF bus load reliably?

Yes, CD74FCT374M96E4 is explicitly characterized to drive highly capacitive loads: its 48-mA output sink current and controlled edge rates enable direct connection to 50-pF bus lines without external buffers or termination. The datasheet specifies switching characteristics (tpd, ten, tdis) under CL = 50 pF test conditions - confirming CD74FCT374M96E4's suitability for backplane and motherboard interconnects where such capacitance is typical.

How does the OE pin behave during power-up of CD74FCT374M96E4?

To ensure high-impedance outputs during power-up or power-down, the OE pin of CD74FCT374M96E4 must be tied to VCC via a pullup resistor. TI recommends sizing the resistor based on the driver's current-sinking capability - typically 1–10 kΩ - so OE remains high until system logic asserts control. This prevents bus contention before initialization, a critical requirement in systems using CD74FCT374M96E4 for hot-pluggable or sequenced-power designs.

Is CD74FCT374M96E4 compatible with standard SOIC-20 footprints?

Yes, CD74FCT374M96E4 uses the industry-standard 20-pin plastic small-outline (SOIC) package (M suffix) per JEDEC MS-013AC. Its 0.300-inch body width, 1.27-mm lead pitch, and gull-wing lead form match common SOIC-20 land patterns - enabling drop-in replacement in existing layouts designed for equivalent TI FCT or 74-series SOIC devices, provided thermal and signal-integrity constraints are met for CD74FCT374M96E4's BiCMOS timing behavior.