Renesas 8S73034AMILF

Overview

8S73034AMILF from Renesas Electronics (formerly IDT) is a low-skew, differential-to-LVPECL clock divider IC performing ÷2, ÷4, and ÷8 frequency division on a single high-speed input. It delivers three independent LVPECL output pairs (Q0/nQ0, Q1/nQ1, Q2/nQ2), supports 3.2 GHz maximum input frequency, operates from 2.375 V to 3.8 V supply, and is rated for –40°C to +85°C ambient temperature - used in telecom line cards and high-speed SerDes clock distribution networks.

For engineers reviewing the 8S73034AMILF datasheet, 8S73034AMILF pinout, 8S73034AMILF application, or 8S73034AMILF equivalent, key selection considerations include its differential LVPECL output skew (≤50 ps), integrated VBB bias generator for single-ended input support, LVCMOS control interface (nEN, MR), and compatibility with LVPECL/LVDS/CML input standards across both 3.3 V and 2.5 V supply configurations.

Technical Context

The 8S73034AMILF implements synchronous binary counter-based division logic with independent reset and enable controls. Its PCLK/nPCLK differential input accepts LVPECL, LVDS, and CML signals, while the internal VBB pin provides a stable reference (VCC – 1.32 V typical) enabling single-ended LVCMOS clock interfacing via external bias resistors.

All three output pairs are true/inverted LVPECL drivers optimized for 50 Ω transmission lines terminated to VCC – 2 V. Propagation delay ranges from 270 ps to 565 ps depending on temperature and supply, and output duty cycle is tightly controlled at 48–52% across operating conditions.

Key Specifications

Pinout & Package

8S73034AMILF is housed in a 16-lead SOIC package (JEDEC MS-012, M suffix), 3.9 mm × 9.9 mm body size, 1.375 mm height, with 1.27 mm pitch. Pin 1 is Q0; pin 14 is no-connect (nc).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 8S73034AGILF, the 8S73034AMILF offers lower thermal resistance in SOIC packaging and larger PCB footprint tolerance; compared with ICS873034AMI, it adds integrated VBB generation and updated RoHS compliance - making it the preferred choice for new designs requiring single-ended clock interfacing and industrial temperature operation.

Availability

8S73034AMILF is available at Aetrix Electronics and suitable for optical transport systems, high-speed Ethernet PHYs, and computing backplanes requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for 8S73034AMILF 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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and timing solutions, formed through the acquisition of IDT in 2019.

The 8S73034AMILF belongs to Renesas' high-performance clock division product line, designed specifically for low-jitter, multi-rate clock distribution in telecom, datacom, and test equipment where deterministic skew and wide supply voltage range are critical.

FAQ

What is the maximum input frequency supported by the 8S73034AMILF?

The 8S73034AMILF supports a maximum input frequency of 3.2 GHz, verified across the full –40°C to +85°C operating temperature range and 2.375 V to 3.8 V supply voltage. This enables direct use with OC-192/STM-64 and 10G Ethernet reference oscillators without prescaling. The 8S73034AMILF maintains specified timing parameters including propagation delay and output skew up to this frequency limit.

Does the 8S73034AMILF support single-ended clock inputs?

Yes, the 8S73034AMILF supports single-ended LVCMOS clock inputs via its integrated VBB bias generator (pin 11) and internal resistor network on the nPCLK input (pin 12). When configured with external bias resistors, the device translates single-ended signals into valid differential thresholds - eliminating need for external level shifters. This capability is explicitly characterized and guaranteed in the 8S73034AMILF datasheet.

What are the LVPECL output termination requirements for the 8S73034AMILF?

The 8S73034AMILF LVPECL outputs require DC-coupled 50 Ω termination to VCC – 2 V for proper logic levels and signal integrity. For 3.3 V operation, this means terminating to 1.3 V; for 2.5 V operation, termination is effectively to ground. The datasheet provides two validated topologies: parallel 50 Ω resistors (one per leg) or Thevenin-equivalent networks. Unused differential pairs may be left floating if no trace is attached.

Is the 8S73034AMILF pin-compatible with earlier IDT clock dividers?

Yes, the 8S73034AMILF is pin- and function-compatible with the legacy ICS873034AMI, sharing identical SOIC-16 pinout, AC/DC specifications, and functional behavior. Key enhancements in the 8S73034AMILF include guaranteed VBB output voltage specification, updated RoHS compliance, and improved single-ended input support - all without requiring PCB redesign.

What is the purpose of the nEN and MR pins on the 8S73034AMILF?

The nEN (pin 15) is a synchronous clock enable: logic LOW enables frequency division and clock output; logic HIGH holds all outputs in their last state. The MR (pin 10) is an asynchronous master reset: logic HIGH forces Qx low and nQx high regardless of clock edge. Both pins use LVCMOS voltage thresholds and feature internal pulldowns - no external resistors needed unless additional noise immunity is required.