Diodes Incorporated PT7C4512WEX

Overview

PT7C4512WEX from Diodes Incorporated is a PLL-based clock multiplier IC that generates precise high-frequency clock outputs (up to 200 MHz) from low-cost fundamental-mode crystals (5–40 MHz) or external clocks (4–50 MHz), with zero ppm multiplication error, 80 ps period jitter at 100–200 MHz, and 45/55% duty cycle up to 160 MHz. It serves as a drop-in replacement for crystal oscillators in embedded timing subsystems requiring stable, low-jitter clocks.

For engineers reviewing the PT7C4512WEX datasheet, PT7C4512WEX pinout, PT7C4512WEX application, or PT7C4512WEX equivalent, key selection criteria include its 9 selectable output frequencies via S0/S1 logic pins, 3.0–5.5 V operation, SOIC-8 package compatibility, and support for both crystal and clock input modes without external PLL loop components.

Technical Context

The PT7C4512WEX implements a fully integrated PLL architecture with an internal logic divider to produce nine discrete multiplication factors (e.g., ×2, ×2.5, ×3, ×4, ×6, ×8, ×10/3, ×16/3, ×41), enabling flexible frequency synthesis without external feedback components. It accepts either a parallel-resonant fundamental-mode crystal (X1/X2) or single-ended clock signal (ICLK) on Pin 1.

Output clock conditioning includes buffered REF output (Pin 4) for crystal oscillator monitoring and CLK output (Pin 5) with controlled rise/fall times (≤1.2 ns @ 15 pF load) and duty cycle stability across voltage and temperature. Input logic thresholds for S0/S1 are rail-relative with mid-level biasing capability when left floating.

Key Specifications

Pinout & Package

PT7C4512WEX is housed in a lead-free, RoHS-compliant 8-pin SOIC (W) package (150 mil width), optimized for surface-mount reflow and board-level decoupling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT5V41227PGI and ICS552GI-01LFT, PT7C4512WEX offers broader input flexibility (crystal or clock), zero ppm ratio accuracy, and simpler implementation-making it optimal for cost-sensitive, fixed-ratio, single-output timing upgrades where jitter and footprint are critical.

Availability

PT7C4512WEX is available at Aetrix Electronics and suitable for industrial PLC timing, embedded microcontroller clocking, FPGA configuration, and legacy interface bridge timing requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.

Supply support for PT7C4512WEX 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, application-optimized components for industrial, computing, and communications markets.

The PT7C4512WEX belongs to Diodes' clock generation product line, designed specifically to replace traditional crystal oscillators with flexible, low-jitter, pin-strapped PLL multipliers in space- and cost-constrained timing applications.

FAQ

What crystal load capacitance does PT7C4512WEX require?

The PT7C4512WEX has no internal load capacitance and requires external capacitors from X1 and X2 to ground. Their value equals twice the crystal's specified load capacitance (e.g., 30 pF each for a 15 pF crystal). Board layout must minimize stray capacitance using short, via-free traces to ensure accurate frequency calibration.

Can PT7C4512WEX accept a 1 MHz input clock?

No. The PT7C4512WEX requires a minimum input frequency of 4 MHz for clock mode and 5 MHz for crystal mode. Inputs below these thresholds fall outside guaranteed operating conditions and may result in PLL unlock, unstable output, or failure to start.

How does floating S0/S1 affect output frequency selection?

When S0 or S1 is left unconnected, it self-biases to VCC/2 and is interpreted as logic "M" (mid-level), corresponding to the "floating" state in the Clock Output Table. This enables three distinct logic states per pin (0, 1, M), yielding nine total combinations including ×2.5, ×10/3, and ×16/3 ratios not achievable with binary-only control.

Is PT7C4512WEX suitable for automotive applications?

The PT7C4512WEX is rated for –40°C to +85°C operation and RoHS-compliant, but it is not AEC-Q200 qualified. It may be used in non-safety-critical automotive infotainment or body electronics if validated per system-level requirements; however, Diodes Incorporated does not guarantee automotive-grade reliability or extended temperature performance beyond the published specification.