Diodes Incorporated PT7C4511WEX

Overview

PT7C4511WEX from Diodes Incorporated is a PLL-based clock multiplier IC designed for precision frequency synthesis in embedded timing systems. It accepts crystal (5–30 MHz) or clock (1–50 MHz) inputs and delivers low-jitter output clocks up to 200 MHz with zero ppm multiplication error, nine selectable multiplication factors (×2.5 to ×8), and tri-state output control via OE pin - used in industrial controllers requiring stable, programmable clock generation from low-cost crystals.

For engineers reviewing the PT7C4511WEX datasheet, PT7C4511WEX pinout, PT7C4511WEX application, or PT7C4511WEX equivalent, key selection criteria include input frequency range, output jitter performance (50 ps period jitter, <200 ps over 200 ns), S0/S1 logic-selectable multiplication, OE-controlled tri-state capability, and SOIC-8 packaging compatibility with board-level test infrastructure.

Technical Context

The PT7C4511WEX implements an analog PLL architecture with integrated crystal oscillator circuitry and a programmable logic divider that supports nine discrete multiplication ratios. Its phase detection and loop filter are optimized for minimal jitter accumulation across 10–200 MHz output bands.

It operates from 3.0 V to 5.5 V, features internal OE pull-up (270 kΩ), and supports both fundamental-mode crystal and external clock inputs. The X1/ICLK pin serves dual function: crystal terminal or single-ended clock input, while X2 is dedicated crystal terminal (open for clock mode).

Key Specifications

Pinout & Package

PT7C4511WEX is housed in an 8-pin SOIC-W (150 mil width) package with standard gull-wing leads, RoHS-compliant and halogen-free per Diodes' Green definition.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT5V41208BGI and ICS843002AGI-01LFT, PT7C4511WEX offers broader voltage support (3.0–5.5 V), nine selectable ratios, OE-controlled tri-state, and lower jitter - making it optimal for cost-sensitive, flexible, and test-ready CMOS clocking in industrial and automotive designs.

Availability

PT7C4511WEX is available at Aetrix Electronics and suitable for industrial PLC timing, automotive infotainment SoC clocking, and medical imaging data acquisition requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.

Supply support for PT7C4511WEX 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

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with design and manufacturing facilities certified to IATF 16949 and AEC-Q100 standards.

The PT7C4511WEX belongs to Diodes' precision timing product line, engineered specifically for cost-effective, low-jitter clock multiplication in resource-constrained embedded systems where crystal-based stability must be extended to higher frequencies without complex PLL programming.

FAQ

What crystal load capacitance is required for PT7C4511WEX?

The PT7C4511WEX has no internal load capacitance. External capacitors must be placed from X1 to GND and X2 to GND, each equal to twice the crystal's specified load capacitance (e.g., 30 pF for a 15 pF crystal). This compensates for PCB stray capacitance and ensures accurate oscillation frequency and reliable startup.

Can PT7C4511WEX accept a 1.8 V input clock?

No. PT7C4511WEX input logic thresholds are defined relative to VCC (VIH ≥ VCC/2 + 1 V, VIL ≤ VCC/2 − 1 V). With minimum VCC = 3.0 V, the lowest valid high-level input is 2.5 V. A 1.8 V clock violates VIH specification and will not register reliably.

How does floating S0/S1 pins affect multiplication ratio?

When S0 or S1 is left unconnected, it self-biases to approximately VCC/2 and is interpreted as logic "M" (mid-level). The datasheet defines specific combinations including M, such as S1=M, S0=0 yielding ×(16/3). This enables three-state logic per pin, expanding ratio options beyond binary encoding.

Is PT7C4511WEX qualified for automotive AEC-Q100 applications?

The PT7C4511WEX is not pre-qualified to AEC-Q100. Diodes states that automotive-grade versions require specific change control, PPAP capability, and IATF 16949 manufacturing - customers must contact Diodes directly to request AEC-Q100 qualified variants (e.g., PT7C4511WEXQ), which differ in screening, traceability, and documentation.