Renesas IDT74FCT3807QI

Overview

IDT74FCT3807QI from Integrated Device Technology is a 3.3V CMOS 1-to-10 clock driver in QSOP-20 package, delivering low-skew (<350ps max), high-speed (<3ns propagation delay), and TTL-compatible clock distribution for industrial temperature range (–40°C to +85°C). It supports mixed-voltage inputs (3.3V or 5V), features 10 buffered outputs with hysteresis-enhanced noise immunity, and is used in synchronous digital systems requiring precise timing distribution.

For engineers reviewing the IDT74FCT3807QI datasheet, IDT74FCT3807QI pinout, IDT74FCT3807QI application, or IDT74FCT3807QI equivalent, key selection criteria include output skew tolerance, fanout scalability, input voltage compatibility, and industrial-grade thermal stability - all confirmed in the official IDT FCT3807/A specification.

Technical Context

The IDT74FCT3807QI implements a single-input, 10-output clock buffer architecture using advanced dual-metal 0.5µm CMOS technology. It provides guaranteed low output skew (<350ps max) and pulse skew (<350ps max), with propagation delay under 3ns at CL = 10pF and 50Ω termination.

Its input stage includes hysteresis (150mV typical) and supports both 3.3V and 5V logic levels, while outputs drive ±60mA with VOH ≥2.4V at IOH = –8mA and VOL ≤0.4V at IOL = 16mA - enabling direct interfacing with TTL and CMOS loads across industrial environments.

Key Specifications

Pinout & Package

Package: QSOP-20 (Quarter-size Small Outline Package), 0.65mm pitch, body size 7.2mm × 5.3mm, JEDEC MS-013 compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock driver applications.

Compared with IDT74FCT3807QI, the MC100EP131DG requires differential signaling and offers higher bandwidth but no 5V input support, while the 5PB1102PGG adds mux functionality but sacrifices 5V-tolerant inputs - making IDT74FCT3807QI optimal for cost-sensitive, single-ended, mixed-voltage industrial clock distribution.

Availability

IDT74FCT3807QI is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, network equipment, and medical imaging systems requiring stable component supply and long-term industrial temperature support.

Supply support for IDT74FCT3807QI 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

Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, interface, and memory solutions for communications, computing, and industrial markets.

IDT74FCT3807QI belongs to the FCT3800 family of low-skew clock drivers designed specifically for robust, high-fanout clock distribution in industrial and telecom applications where signal integrity and thermal reliability are critical.

FAQ

What is the maximum operating frequency supported by the IDT74FCT3807QI?

The IDT74FCT3807QI supports input frequencies up to 100MHz under industrial conditions (TA = –40°C to +85°C) with CL = 10pF and 50Ω AC termination. Its propagation delay remains under 3.5ns and output skew stays below 450ps, ensuring reliable operation in high-speed synchronous systems. The IDT74FCT3807QI does not specify a hard upper frequency limit but is characterized for stable performance up to 100MHz in standard test configurations.

Does the IDT74FCT3807QI support 5V-tolerant inputs?

Yes, the IDT74FCT3807QI supports 5V-tolerant inputs: VIH is specified up to 5.5V, and inputs can be driven directly from 5V TTL or CMOS sources without external level shifting. This capability is explicitly confirmed in the DC Electrical Characteristics table under VIH (Input HIGH Level) and is valid across the full industrial temperature range. The IDT74FCT3807QI maintains correct logic interpretation and safe operation with 5V inputs while powered from a 3.3V supply.

What package type is used for the IDT74FCT3807QI?

The IDT74FCT3807QI uses a QSOP-20 (Quarter-size Small Outline Package) with 20 leads, 0.65mm lead pitch, and JEDEC MS-013 compliance. This package is explicitly indicated by the "Q" suffix in the part number per IDT's Ordering Information table. The QSOP-20 provides compact footprint and thermal performance suitable for dense industrial PCB layouts, and its pinout matches the SOIC-20 and SSOP-20 variants except for physical dimensions and lead form.

How many power and ground pins does the IDT74FCT3807QI have, and why?

The IDT74FCT3807QI has seven VCC pins (pins 2, 4, 7, 10, 13, 16, 20) and ten GND pins (pins 1, 3, 5, 6, 8, 9, 14, 15, 17, 18). This extensive power/ground pin count minimizes supply impedance and suppresses simultaneous switching noise across its 10 high-speed outputs. The layout distributes current paths to reduce ground bounce and maintain signal integrity - a design feature confirmed in the Functional Block Diagram and Pin Configuration diagram of the official datasheet.

Is the IDT74FCT3807QI pin-compatible with the IDT74FCT3807A variant?

Yes, the IDT74FCT3807QI is pin-compatible with the IDT74FCT3807A across all packages including QSOP-20. Both share identical pin functions, electrical specifications, and timing parameters - differing only in speed grade (FCT3807A offers tighter skew and propagation delay limits). The datasheet confirms functional equivalence and interchangeable pinout, and the "A" suffix denotes an enhanced-performance revision within the same mechanical and logical footprint. The IDT74FCT3807QI retains full backward compatibility with FCT3807A designs.