Diodes Incorporated PI6C2409-1HLE+DCX

Overview

PI6C2409-1HLE+DCX from Pericom Semiconductor is a PLL-based zero-delay clock buffer IC that distributes nine 3.3V CMOS clock outputs (eight programmable, one dedicated feedback) from a single input, supporting up to 133 MHz with <250 ps output-to-output skew and ±350 ps CLKIN-to-OUT0 delay. It operates across commercial (0°C to 70°C) and industrial (–40°C to 85°C) temperature ranges and features dual-bank output selection via SEL1/SEL2 control pins.

For engineers reviewing the PI6C2409-1HLE+DCX datasheet, PI6C2409-1HLE+DCX pinout, PI6C2409-1HLE+DCX application, or PI6C2409-1HLE+DCX equivalent, key selection criteria include zero-delay synchronization capability, load-dependent delay compensation, spread-spectrum compatibility, and dual-bank output enable/disable control under 3.3V supply.

Technical Context

The device implements an internal PLL with OUT0 as the dedicated feedback path to achieve zero input-to-output propagation delay when OUT0 and other outputs are equally loaded. Output banks A and B (four outputs each) are independently enabled via SEL1/SEL2 logic decoding, allowing dynamic routing of clock signals without external multiplexers.

It supports two operating modes: PLL-enabled (for synchronized, low-jitter distribution) and bypass mode (SEL1=0, SEL2=1), where all outputs directly buffer CLKIN with PLL disabled and IDD reduced to 1.0 mA. Input loading sensitivity is characterized - a 25 pF difference between OUT0 and any OUTx shifts delay by ~400 ps.

Key Specifications

Pinout & Package

PI6C2409-1HLE+DCX is packaged in a Pb-free, green 16-pin TSSOP (Package Code L, 173-mil width), compliant with JEDEC MO-153F/AB.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar zero-delay clock buffer applications.

Compared with IDT 5V9885NLGI and ON Semi NB3N502DG, PI6C2409-1HLE+DCX uniquely balances programmable bank control, industrial temperature support, and CMOS compatibility - making it optimal for reconfigurable embedded systems requiring selective clock enablement and robust thermal performance.

Availability

PI6C2409-1HLE+DCX is available at Aetrix Electronics and suitable for network switch timing, industrial PLC clock distribution, and automotive infotainment SoC interface applications requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for PI6C2409-1HLE+DCX 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

Pericom Semiconductor (acquired by Diodes Incorporated in 2016) specialized in high-performance timing, interface, and signal-integrity solutions for communications, computing, and industrial markets.

The PI6C2409-1H series belongs to Pericom's zero-delay clock buffer product line, engineered for applications demanding precise phase alignment, programmable output routing, and low-jitter clock distribution in space-constrained 3.3V systems.

FAQ

What is the function of the OUT0 pin, and why must its loading match other outputs?

OUT0 serves as the dedicated internal PLL feedback path. Its capacitive loading directly determines the PLL's phase-lock point and thus the CLKIN-to-OUTx propagation delay. When OUT0 loading differs from other outputs by >25 pF, delay shifts by up to ±400 ps - violating zero-delay operation. Matching load ensures consistent delay across all outputs.

How does the SEL1/SEL2 logic control output banks, and what happens when both are low?

SEL1 and SEL2 decode into four states: (0,0) disables all outputs to 3-state; (0,1) enables Bank A only; (1,0) enables Bank B only; (1,1) enables both banks. When both are low, all eight OUTA/OUTB outputs enter high-impedance mode - useful for power gating or bus sharing without external OE logic.

Can PI6C2409-1HLE+DCX operate with a 25 MHz input and generate 100 MHz outputs?

No - it is a clock buffer, not a frequency multiplier. The device replicates and synchronizes the input frequency only. With a 25 MHz CLKIN, all outputs (including OUT0) run at 25 MHz. Maximum output frequency is constrained by input frequency and load; it cannot exceed 133 MHz regardless of input.

Is the PI6C2409-1HLE+DCX RoHS-compliant and halogen-free?

Yes - the "E" suffix in the part number denotes Pb-free and Green compliance per JEDEC JS709A and IPC-1752A. The TSSOP package uses matte-tin lead finish and halogen-free molding compound, meeting RoHS Directive 2011/65/EU and EU REACH SVHC requirements.